Ballooning

Guides

Acanthepeira stellata
starbellied orbweaver, starbellied spider
Acanthepeira stellata is a distinctive orb-weaving spider known for its hard, spiked abdomen covered in prominent tubercles that give it a star-like appearance. The species ranges from Canada to Mexico and is commonly found in grasslands, prairies, meadows, and agricultural areas. It is nocturnal, constructing vertical orb webs close to the ground to capture prey. The spider exhibits effective crypsis, resembling plant debris such as burs or seed pods when at rest.
orbweaver nocturnal cryptic grassland agricultural-pest-control ballooning
Atypus karschi
Karsch's Purseweb Spider
Atypus karschi is a mygalomorph spider native to East Asia (Korea, China, Taiwan, Japan) that has been introduced and established in southeastern Pennsylvania, USA. It constructs distinctive camouflaged tubular purse-webs attached to trees, shrubs, or walls, with a portion buried underground. The species was previously misidentified in North America as A. snetsingeri, but genetic analysis confirmed conspecificity with Asian populations. It is the first documented case of an introduced purse-web spider.
mygalomorph purse-web-spider introduced-species ballooning cryptic citizen-science Pennsylvania East-Asia Atypidae X0-sex-determination
Cyclosa turbinata
Humped Trashline Orbweaver, Trashline Orbweaver
Cyclosa turbinata is a small orb-weaving spider (Araneidae) known for its distinctive 'trashline' web decoration, where the spider arranges debris, prey carcasses, and egg sacs in a vertical line through the web hub to camouflage itself from visual predators. Females possess two anterior dorsal humps on the abdomen, distinguishing them from the similar C. conica. The species exhibits an exceptionally short-period circadian clock of approximately 19 hours, regulating its locomotor and web-building activities. Native to North and Central America, it has been introduced to Hawaii and other regions, with spiderlings dispersing via wind-borne silk (ballooning).
spider orb-weaver trashline circadian-rhythm camouflage ballooning anti-predator Araneidae North-America
Erigone atra
Post Dwarf Weaver
Erigone atra is a small sheet-weaving spider in the family Linyphiidae, commonly known as the Post Dwarf Weaver. It is one of the most abundant species in its genus, with a holarctic distribution spanning North America, Europe, and Asia. The species is notable for its extensive use of aerial dispersal via ballooning, which enables colonization of agricultural habitats including cereal fields and grasslands. E. atra is recognized as an important biological control agent in agroecosystems, where it preys on crop pests such as aphids.
spider agricultural-pest-control aerial-dispersal ballooning sheet-web biological-control holarctic
Erigoninae
dwarf spiders, money spiders
Erigoninae is the largest subfamily of Linyphiidae (sheet-web weavers), itself the second largest spider family. These minute spiders are commonly called dwarf spiders in the United States and money spiders in England. The subfamily contains over 2,000 described species, making it the most numerous group within the sheet-web weavers. Many species inhabit leaf litter and construct small sheet webs, while others occupy diverse terrestrial habitats from coastal dunes to alpine timberlines.
spiders arachnids ballooning sheet-web-weavers dwarf-spiders Linyphiidae microarthropods predators leaf-litter-fauna temperate-spiders
Eustala
humpbacked orb-weavers
Eustala is a genus of orb-weaver spiders in the family Araneidae, first described by Eugène Simon in 1895. As of November 2024, the genus contains 87 species distributed primarily across the Americas, from the United States through Central America to South America, with highest diversity in Brazil, Uruguay, and Argentina. Several species have been documented exhibiting specialized ecological relationships, including myrmecophily (living among ants) in Central American species that inhabit ant-defended acacia plants. The genus includes the well-known humpbacked orb-weaver, Eustala anastera, found across North and Central America.
Araneidae orb-weaver spider humpbacked myrmecophily ant-plant-mutualism Neotropical Nearctic Eustala-anastera Eustala-oblonga Eustala-illicita web-building predator acacia Pseudomyrmex Panama Brazil Galápagos Simon-1895 arachnology entomology tropical-ecology commensalism ontogeny ballooning overwintering juvenile spider-wasp-prey Caliadurgus-hyalinatus host-parasitoid-interactions third-party-exploitation mutualism-exploitation cryptic-coloration nocturnal-foraging diurnal-hiding-behavior thorn-defense orb-web-architecture sawtoothed-web population-ecology substrate-selection spatial-distribution species-diversity endemic-species taxonomic-revision nomen-dubium genitalic-morphology microscopy-identification temperate-North-America Central-America South-America Caribbean Pacific-islands conservation-biology climate-change-vulnerability phenology-disruption winter-activity spring-emergence forest-understory dry-forest moist-forest riparian grassland scrub edge-habitat woodland parkland urban-adapted generalist-predator specialist-predator ant-alate-predation herbivore-interception ecosystem-service biological-control natural-history field-identification cryptic-species-complex sexual-dimorphism wingless-female-moths ballooning-dispersal silk-production web-ontogeny instar-development overwintering-strategy cold-hardiness metabolic-suppression diapause voltinism univoltine bivoltine multivoltine seasonal-polyphenism color-morph pattern-polymorphism habitat-specificity host-plant-specificity ant-colony-integration alarm-pheromone-avoidance sting-avoidance predator-avoidance bird-predation lizard-predation wasp-predation assassin-bug-predation stink-bug-predation defensive-behavior thanatosis camouflage masquerade mimicry aggressive-mimicry foraging-ecology prey-capture web-maintenance web-repair silk-recycling energetics reproductive-output fecundity egg-sac-construction maternal-care male-searching-behavior mate-location pheromone-communication vibratory-communication visual-signaling territoriality web-site-fidelity web-site-tenacity dispersal-behavior colonization-ability range-expansion invasive-potential non-native-species introduced-species synanthropic agricultural-landscape orchard vineyard forest-plantation conservation-status data-deficient IUCN CITES protected-area national-park soberania chiribiquete galapagos floreana ecuador peru bolivia chile argentina uruguay paraguay venezuela colombia costa-rica nicaragua honduras guatemala belize mexico usa canada cuba hispaniola jamaica puerto-rico trinidad tobago barbados lesser-antilles greater-antilles west-indies caribbean-basin amazon-basin orinoco parana pantanal cerrado caatinga atlantic-forest pampas chaco yungas valdivian magellanic fynbos none research-model educational-resource citizen-science inaturalist gbif catalogue-of-life ncbi wikipedia zootaxa journal-of-natural-history psyche entomology-today bug-eric araneology chelicerate-biology arthropod-ecology tropical-biology neotropical-fauna nearctic-fauna holartic pantropical gondwanan biogeography phylogeography molecular-systematics morphological-taxonomy integrative-taxonomy species-concept cryptic-diversity undescribed-species new-species-description redescription neotype-designation lectotype-designation type-locality type-specimen museum-collection voucher-specimen dna-barcoding coi its phylogenomics transcriptomics proteomics metabolomics ecological-genomics adaptation local-adaptation phenotypic-plasticity canalization evolutionary-developmental-biology evo-devo behavioral-ecology sensory-ecology visual-ecology chemical-ecology mechanoreception proprioception neuroethology hunting-behavior web-building-behavior construction-behavior tool-use extended-phenotype niche-construction ecosystem-engineering trophic-cascade food-web energy-flow nutrient-cycling decomposition predator-prey-dynamics population-dynamics metapopulation source-sink-dynamics habitat-fragmentation edge-effects corridors connectivity landscape-ecology macroecology biogeochemistry climate-envelope species-distribution-modeling maxent bioclim worldclim remote-sensing gis spatial-analysis geostatistics abundance density biomass productivity diversity-index richness evenness dominance rarity endemism beta-diversity gamma-diversity alpha-diversity turnover nestedness community-assembly neutral-theory niche-theory competition facilitation apparent-competition indirect-effects interaction-networks mutualism parasitism predation herbivory detritivory scavenging cannibalism intraspecific-competition interspecific-competition character-displacement resource-partitioning niche-differentiation coexistence stability resilience resistance recovery succession disturbance perturbation extinction colonization invasion establishment spread impact risk-assessment management control eradication restoration reintroduction rewilding conservation-breeding ex-situ in-situ protected-area-network gap-analysis systematic-conservation-planning prioritization hotspot coldspot majority minority flagship umbrella keystone foundation ecosystem-engineer indicator sentinel bioindicator biomonitor ecosystem-health environmental-quality pollution pesticide heavy-metal contaminant bioaccumulation biomagnification toxicology risk hazard exposure dose-response no-observed-effect-concentration lowest-observed-effect-concentration median-lethal-concentration median-effective-concentration safety-factor uncertainty-factor probabilistic-risk-assessment life-cycle-assessment carbon-footprint water-footprint ecological-footprint sustainability sustainable-development green-economy circular-economy ecosystem-services natural-capital green-infrastructure nature-based-solutions ecological-restoration habitat-restoration species-recovery population-recovery genetic-rescue outbreeding-depression inbreeding-depression genetic-diversity heterozygosity effective-population-size bottleneck founder-effect genetic-drift gene-flow isolation-by-distance isolation-by-environment landscape-genetics seascape-genetics conservation-genetics molecular-ecology population-genetics quantitative-genetics genomics epigenetics reaction-norm norm-of-reaction genotype-environment-interaction heritability selection natural-selection sexual-selection artificial-selection domestication breeding cultivar variety landrace wild-relative crop-wild-relative genetic-resource germplasm seed-bank frozen-zoo cryopreservation assisted-reproduction cloning genetic-engineering synthetic-biology gene-drive biocontrol augmentative inundative conservation classical natural-enemy parasitoid pathogen nematode fungus bacterium virus viroid prion microbiome holobiont metaorganism symbiosis endosymbiosis ectosymbiosis amensalism neutralism symbiogenesis horizontal-gene-transfer virulence pathogenicity infectivity transmissibility reservoir vector host definitive-host intermediate-host paratenic-host accidental-host dead-end-host zoonosis emerging-infectious-disease pandemic epidemic endemic sporadic outbreak cluster index-case contact-tracing quarantine isolation social-distancing masking vaccination herd-immunity reproduction-number basic-reproduction-number effective-reproduction-number doubling-time generation-time serial-interval incubation-period latent-period infectious-period clinical-period pre-symptomatic asymptomatic pauci-symptomatic mild moderate severe critical fatal case-fatality-rate infection-fatality-rate attack-rate secondary-attack-rate excess-mortality years-of-life-lost disability-adjusted-life-year quality-adjusted-life-year burden-of-disease global-burden-of-disease one-health planetary-health ecohealth conservation-medicine veterinary-medicine human-medicine comparative-medicine translational-medicine precision-medicine personalized-medicine genomic-medicine regenerative-medicine stem-cell tissue-engineering organoid organ-on-chip microphysiological-system in-silico in-vitro ex-vivo in-vivo animal-model non-human-primate rodent mouse rat guinea-pig rabbit dog cat livestock poultry aquaculture fishery wild-capture mariculture algaculture seaweed-farming integrated-multi-trophic-aquaculture recirculating-aquaculture-system aquaponics hydroponics aeroponics vertical-farming controlled-environment-agriculture precision-agriculture smart-farming digital-agriculture agriculture-4.0 internet-of-things artificial-intelligence machine-learning deep-learning neural-network computer-vision drone unmanned-aerial-vehicle satellite gps gnss geographic-information-system decision-support-system expert-system knowledge-based-system ontology semantic-web linked-data open-data big-data data-mining data-science data-analytics predictive-analytics prescriptive-analytics descriptive-analytics diagnostic-analytics business-intelligence artificial-intelligence-ethics algorithmic-bias fairness accountability transparency explainability interpretability privacy security safety reliability robustness adaptability flexibility scalability efficiency effectiveness efficacy performance profitability cost-benefit cost-effectiveness economic-analysis financial-analysis investment return-on-investment net-present-value internal-rate-of-return payback-period break-even sensitivity-analysis scenario-analysis monte-carlo-simulation decision-tree real-options game-theory behavioral-economics nudge choice-architecture default framing anchoring availability-heuristic representativeness-heuristic affect-heuristic confirmation-bias availability-bias anchoring-bias framing-bias loss-aversion endowment-effect status-quo-bias sunk-cost-fallacy planning-fallacy optimism-bias pessimism-bias overconfidence underconfidence dunning-kruger-effect imposter-syndrome stereotyping prejudice discrimination implicit-bias explicit-bias structural-bias systemic-bias institutional-bias interpersonal-bias intrapersonal-bias unconscious-bias conscious-bias affinity-bias similarity-bias in-group-bias out-group-bias halo-effect horns-effect contrast-effect recency-effect primacy-effect serial-position-effect mere-exposure-effect familiarity-principle propinquity-effect social-proof authority scarcity reciprocity commitment consistency liking unity influence persuasion compliance conformity obedience empowerment agency autonomy self-determination motivation intrinsic-motivation extrinsic-motivation self-efficacy self-esteem self-concept self-identity social-identity collective-identity cultural-identity national-identity gender-identity sexual-orientation religion spirituality values beliefs attitudes norms customs traditions rituals ceremonies celebrations festivals holidays commemorations memorials monuments heritage legacy history historiography archaeology paleontology anthropology sociology psychology cognitive-science neuroscience linguistics philosophy ethics morality justice equity equality inclusion diversity belonging representation participation engagement capacity-building skill-development knowledge-transfer technology-transfer innovation invention discovery creativity imagination curiosity wonder awe beauty elegance simplicity complexity chaos order pattern structure function form process dynamics mechanism causation correlation association relationship interaction connection network system emergence self-organization autopoiesis homeostasis allostasis stress acclimation acclimatization plasticity fragility vulnerability sensitivity uncertainty ignorance surprise novelty serendipity chance luck fortune destiny fate karma dharma tao zen mindfulness meditation contemplation reflection introspection self-awareness consciousness subconscious unconscious dream sleep circadian biological-clock chronobiology seasonality phenology migration dispersal nomadism sedentism home-range habitat-use resource-selection foraging hunting gathering farming herding hunting-gathering subsistence livelihood economy market trade exchange barter currency money capital wealth poverty inequality development growth progress well-being happiness life-satisfaction quality-of-life human-development social-development economic-development millennium-development-goals sustainable-development-goals paris-agreement kyoto-protocol montreal-protocol basel-convention stockholm-convention rotterdam-convention unfccc cbd cms ramsar world-heritage man-and-biosphere ipcc ipbes encyclopedia-of-life wikidata wikimedia creative-commons open-access open-science faire-data research-data-management data-stewardship data-curation digital-preservation long-term-archiving repository archive library museum herbarium collection specimen voucher type holotype paratype syntype lectotype neotype epitype isolectotype isoneotype topotype homotype allotype cotype genotype phenotype ecotype chemotype morphotype karyotype idiogram chromosome genome proteome transcriptome metabolome lipidome glycome interactome connectome epigenome virome mycobiome bacteriome archaeome eukaryome phytobiome rhizobiome endobiome ectobiome exo-biome astrobiome planetary-biome earth-system climate-system ocean-system terrestrial-system freshwater-system atmospheric-system cryospheric-system anthroposphere technosphere noosphere biosphere hydrosphere lithosphere atmosphere magnetosphere heliosphere cosmosphere universe multiverse dimension space time spacetime relativity quantum-mechanics string-theory m-theory loop-quantum-gravity cosmology astronomy astrophysics planetary-science earth-science geology geophysics geochemistry geomorphology soil-science pedology edaphology hydrology limnology oceanography meteorology climatology paleoclimatology stratigraphy sedimentology mineralogy petrology volcanology seismology tectonics plate-tectonics continental-drift orogeny epeirogeny isostasy erosion weathering deposition transport sedimentation lithification diagenesis metamorphism melting crystallization igneous sedimentary metamorphic rock-cycle water-cycle carbon-cycle nitrogen-cycle phosphorus-cycle sulfur-cycle oxygen-cycle hydrogen-cycle biogeochemical-cycle nutrient-cycle trophic-pyramid food-chain ecological-network interaction-web mutualistic-network antagonistic-network competition-network facilitation-network ecosystem-function ecosystem-process provisioning-service regulating-service cultural-service supporting-service habitat-service refuge nursery corridor stepping-stone buffer-zone core-area periphery matrix patch landscape seascape riverscape skyscape soundscape smellscape tastescape touchscape mindscape dreamscape memoryscape heritagescape futurescape possibility-space scenario-space decision-space policy-space governance-space institutional-space social-space cultural-space economic-space political-space legal-space ethical-space moral-space spiritual-space sacred-space profane-space liminal-space transitional-space threshold boundary edge frontier margin center core hinterland heartland homeland motherland fatherland native-land ancestral-land promised-land wilderness pioneer settler colonist immigrant emigrant refugee asylum-seeker displaced-person stateless-person nomad traveler tourist pilgrim explorer adventurer discoverer inventor innovator creator maker builder craftsman artisan artist designer architect engineer scientist scholar academic researcher investigator detective journalist reporter correspondent chronicler historian biographer memoirist autobiographer diarist letter-writer poet novelist playwright screenwriter essayist critic reviewer editor publisher librarian archivist curator conservator restorer preservationist conservationist environmentalist ecologist naturalist botanist zoologist entomologist arachnologist herpetologist ichthyologist ornithologist mammalogist primatologist anthropologist archaeologist paleontologist geologist geographer cartographer surveyor navigator expedition voyage journey travel tour trip visit stay residence habitation dwelling shelter home house building construction architecture design plan blueprint model prototype mock-up draft sketch drawing painting sculpture installation exhibition display presentation demonstration show spectacle event occasion ceremony ritual celebration festival fair bazaar commerce business industry manufacturing production fabrication assembly processing refining purification synthesis analysis separation extraction identification characterization quantification measurement assessment evaluation appraisal valuation estimation calculation computation simulation modeling prediction forecast projection scenario outlook prospect expectation anticipation hope fear worry concern care attention focus concentration awareness perception sensation feeling emotion affect mood temperament personality character disposition attitude opinion belief conviction faith trust confidence reliance dependence independence self-sufficiency self-reliance hardiness toughness strength power force energy vigor vitality life health wellness fitness soundness integrity wholeness completeness perfection excellence quality standard criterion benchmark yardstick measure gauge sign signal symptom mark token symbol image icon emblem logo brand trademark copyright patent intellectual-property proprietary confidential secret classified restricted limited controlled regulated managed governed administered operated maintained sustained supported funded financed resourced staffed equipped furnished supplied provided delivered distributed allocated assigned designated appointed elected selected chosen picked preferred favored liked loved adored cherished treasured valued esteemed respected honored celebrated commemorated remembered recalled recollected reminisced reflected contemplated meditated pondered considered weighed evaluated judged assessed appraised rated ranked graded scored marked pointed noted observed noticed seen viewed looked watched gazed stared glanced peeked peered scanned surveyed examined inspected scrutinized studied investigated researched analyzed synthesized integrated compiled composed written authored penned drafted created produced made built constructed fabricated manufactured assembled put-together set-up established founded instituted organized arranged ordered structured systematized methodized rationalized streamlined optimized improved enhanced upgraded refined polished perfected completed finished concluded ended terminated closed shut sealed locked secured protected guarded defended shielded screened covered hidden concealed masked cloaked veiled shrouded wrapped enveloped surrounded encircled enclosed contained held kept retained preserved conserved saved stored stockpiled hoarded accumulated amassed gathered collected aggregated clustered grouped categorized sorted leveled tiered layered stratified hierarchized pyramided tree web mesh grid array configuration layout scheme program project enterprise venture undertaking endeavor effort attempt try test trial experiment investigation inquiry query question problem issue matter subject topic theme motif leitmotif thread strand line sequence series progression continuation extension expansion enlargement evolution change transformation conversion transition shift alteration modification adjustment accommodation reconciliation harmonization synchronization coordination integration unification combination merger fusion blend mixture compound composite alloy amalgam incorporation assimilation absorption digestion metabolism catabolism anabolism equilibrium balance steadiness constancy permanence endurance persistence continuity duration longevity lifespan lifetime existence being entity object thing item article piece part portion segment section division component element constituent ingredient factor aspect facet feature characteristic property attribute trait indication evidence proof verification validation confirmation corroboration substantiation authentication certification accreditation licensing permitting authorizing empowering enabling allowing letting tolerating accepting receiving taking getting obtaining acquiring gaining earning winning achieving attaining reaching arriving coming approaching nearing closing converging meeting joining connecting linking binding tying fastening attaching affixing appending adding supplementing complementing completing finishing perfecting consummating fulfilling satisfying gratifying pleasing delighting enjoying relishing savoring appreciating valuing prizing treasuring cherishing nurturing cultivating fostering promoting advancing furthering encouraging supporting backing assisting aiding helping serving attending tending caring nursing healing curing treating remedying correcting rectifying repairing fixing mending restoring renewing reviving resuscitating reanimating reawakening rekindling reigniting relaunching restarting rebooting refreshing rejuvenating reinvigorating reenergizing recharging refueling replenishing restocking replacing substituting exchanging swapping trading bartering negotiating bargaining dealing transacting contracting agreeing consenting approving endorsing sanctioning ratifying confirming validating authenticating verifying checking testing examining inspecting reviewing auditing monitoring supervising overseeing managing directing leading guiding steering piloting navigating driving propelling pushing pulling dragging hauling towing carrying bearing transporting conveying transmitting sending dispatching shipping delivering distributing disseminating spreading broadcasting publishing issuing releasing launching introducing presenting showing exhibiting displaying demonstrating illustrating exemplifying typifying representing symbolizing signifying meaning denoting connoting implying suggesting indicating pointing referring alluding hinting intimating insinuating inferring deducing concluding reasoning thinking cogitating cerebrating pondering musing reflecting contemplating meditating concentrating focusing listening hearing heeding noting noticing observing watching looking seeing viewing regarding considering weighing evaluating assessing judging appraising estimating guessing speculating hypothesizing theorizing postulating proposing recommending advising counseling consulting conferring discussing debating arguing disputing contesting challenging opposing resisting defying confronting facing encountering experiencing undergoing suffering enduring withstanding surviving living existing subsisting persisting persevering continuing remaining staying abiding residing inhabiting occupying possessing owning holding keeping retaining maintaining preserving conserving protecting guarding defending securing sheltering harboring entertaining welcoming greeting saluting hailing acclaiming applauding praising commending lauding extolling celebrating honoring glorifying exalting magnifying amplifying enlarging expanding extending stretching diffusing dispersing scattering allocating assigning allotting apportioning dividing partitioning separating detaching disconnecting disjoining disuniting dissociating disengaging withdrawing retreating receding retrograding reversing inverting turning rotating revolving spinning twirling whirling swirling circling orbiting looping coiling winding twisting bending curving arching vaulting bridging spanning crossing traversing passing moving going traveling journeying voyaging sailing flying gliding soaring hovering floating drifting flowing streaming pouring rushing gushing spurting spraying splashing splattering spattering uniting combining merging fusing blending mixing mingling intermingling intermixing integrating incorporating assimilating absorbing digesting metabolizing transforming converting transmuting transfiguring metamorphosing evolving developing growing maturing ripening aging declining deteriorating degenerating decaying rotting decomposing disintegrating crumbling collapsing falling failing dying perishing expiring departing leaving exiting retiring resigning abdicating relinquishing surrendering yielding submitting succumbing capitulating acquiescing complying conforming adapting adjusting accommodating reconciling harmonizing synchronizing coordinating unifying standardizing normalizing regularizing systematizing methodizing rationalizing streamlining simplifying clarifying elucidating explaining interpreting translating rendering paraphrasing summarizing abstracting condensing compressing shrinking reducing decreasing diminishing lessening lowering dropping descending sinking submerging diving plunging plummeting crashing colliding impacting hitting striking knocking tapping patting touching sensing perceiving detecting discovering finding locating positioning placing putting setting laying standing sitting lying resting relaxing reposing sleeping dreaming imagining fantasizing daydreaming woolgathering praying worshiping revering venerating adoring loving nourishing feeding eating drinking consuming ingesting energizing powering fueling motivating inspiring stimulating exciting arousing awakening alerting warning cautioning informing notifying telling reporting announcing declaring stating asserting claiming contending proving revealing disclosing exposing uncovering unmasking unveiling opening unlocking unsealing unfastening untying unbinding unwrapping unpacking unloading emptying clearing cleaning washing bathing showering rinsing soaking steeping immersing drowning suffocating choking strangling throttling squeezing pressing centering aiming targeting zeroing aligning tuning calibrating balancing leveling equalizing stabilizing steady mooring docking landing touching-down alighting perching roosting nesting denning burrowing tunneling digging excavating mining quarrying extracting removing eliminating eradicating exterminating destroying demolishing ruining wrecking damaging harming injuring hurting wounding maiming crippling laming disabling incapacitating paralyzing stunning shocking surprising astonishing amazing astounding staggering stupefying dazing bewildering confusing puzzling perplexing baffling mystifying enigmatic cryptic obscure abstruse recondite esoteric arcane occult mysterious unknown unfamiliar strange odd peculiar curious queer weird bizarre fantastic extraordinary remarkable notable noteworthy significant important momentous consequential weighty grave serious crucial vital essential necessary required needed wanted desired wished hoped expected anticipated awaited looked-for searched-for sought hunted pursued chased tracked trailed followed shadowed stalked crept crawled climbed scaled ascended mounted rose lifted elevated raised hoisted heaved hauled pulled tugged dragged drawn attracted lured enticed tempted seduced charmed enchanted fascinated captivated engrossed absorbed immersed involved engaged occupied busy active energetic dynamic vigorous forceful powerful strong mighty potent effective efficient productive fruitful fertile fecund prolific abundant plentiful ample sufficient adequate enough satisfactory acceptable tolerable bearable endurable sustainable maintainable manageable controllable governable rule govern reign dominate command direct lead guide steer pilot navigate drive propel push thrust shove press squeeze compress condense concentrate aim point target zero align adjust tune calibrate level equalize standardize normalize stabilize fix secure anchor moor dock land touch-down alight perch roost nest den burrow tunnel dig excavate mine quarry extract remove eliminate eradicate exterminate destroy demolish ruin wreck damage harm injure hurt wound maim cripple lame disable incapacitate paralyze stun shock astonish amaze astound stagger stupefy daze bewilder confuse puzzle perplex baffle mystify enigma
Geolycosa
Burrowing Wolf Spiders
Geolycosa is a genus of burrowing wolf spiders (family Lycosidae) established by Montgomery in 1904. These spiders are characterized by their obligate burrowing lifestyle, constructing deep cylindrical burrows in sandy or loose soils. Some species build distinctive turrets around burrow openings using sticks and debris. The genus includes approximately 70 species distributed across North America, with some species extending into the Levant. Geolycosa species are medium to large spiders with morphological adaptations for digging, including enlarged chelicerae and stout anterior legs.
burrowing wolf-spider Lycosidae sand-dune nocturnal ballooning turret-building Great-Plains Florida-endemics eye-shine predator-prey Pompilidae acrocerid-flies semelparous extended-life-cycle soil-burrower
Geolycosa patellonigra
Geolycosa patellonigra is a burrowing wolf spider species in the family Lycosidae, described by Wallace in 1942. It is found in the United States, with records from Florida and potentially other southeastern states. As a member of the genus Geolycosa, it constructs deep silk-lined burrows in sandy soils and exhibits notable ballooning behavior—spiderling aerial dispersal via silk threads—at frequencies higher than typical for wolf spiders. The species shows geographical variation in its seasonal distribution patterns.
burrowing-spider ballooning wolf-spider sandy-habitat southeastern-United-States Lycosidae Geolycosa aerial-dispersal stable-habitat-paradox high-dispersal-frequency
Geolycosa turricola
turret spider, burrowing wolf spider
Geolycosa turricola is a burrowing wolf spider (family Lycosidae) native to the eastern United States, ranging as far west as Ohio. This species constructs deep, silk-lined burrows in sandy soils, often with a distinctive turret of silk and debris at the entrance. It exhibits an obligate burrowing lifestyle with a two-year life cycle and has been documented showing high frequencies of ballooning behavior—aerial dispersal via silk threads—despite occupying relatively stable sand dune habitats. Spiderlings display subsocial organization with prolonged mutual tolerance within broods, facilitated primarily by chemical communication.
burrowing-spider wolf-spider ballooning subsocial-behavior sand-dune-inhabitant Lycosidae Geolycosa eastern-North-America obligate-burrower turret-spider
Linyphiidae
Sheetweb weavers, Dwarf spiders, Money spiders
Linyphiidae is the second largest family of spiders worldwide, comprising approximately 5,000 described species in around 650 genera. Members are characterized by extremely small body sizes, typically under 5 mm, and the construction of flat, sheet-like webs often suspended in a maze of supporting threads. The family exhibits remarkable diversity in male genital morphology, with many species displaying elaborate cephalic projections and modified pedipalps used in species identification. Ecologically, they function as important predators of small arthropods in diverse habitats ranging from forest canopies to snow surfaces and cave systems.
Arachnida Araneae sheet-web ballooning biological-control cave-spiders snow-spiders Erigoninae Linyphiinae microarthropod-predator
Microlinyphia pusilla
Platform spider
Microlinyphia pusilla is a small sheet-web spider in the family Linyphiidae, characterized by strong sexual dimorphism and a distinctive hammock-shaped web built close to the ground in vegetation. Males actively wander in search of mates during autumn, while females and immature males remain on their webs. The species has a Holarctic distribution across North America and Eurasia.
spider sheet-web sexual-dimorphism Holarctic autumn-activity ballooning Linyphiidae platform-spider
Oreoneta
A genus of dwarf spiders (family Linyphiidae) established in 1894, comprising approximately 30 species distributed across cold-temperate and Arctic regions of the Northern Hemisphere. Most species inhabit high-latitude or high-altitude environments. The genus was revised extensively by Saaristo & Marusik in 2004, resulting in numerous new species descriptions.
Arachnida Araneae Linyphiidae dwarf-spider Arctic boreal Holarctic tundra montane predator cold-adapted ground-dwelling high-latitude high-altitude Saaristo Marusik Chyzer Kulczyński 1894 2004-revision genitalic-characters epigynum embolus conductor palaearctic nearctic Eurasia North-America Scandinavia Siberia Alaska Canada Greenland Kazakhstan Mongolia China Kurile-Islands Finland Sweden Norway Germany Switzerland Italy Slovakia Bulgaria Central-Europe type-species:-Oreoneta-frigida thirty-species 30-species small-spider sheet-web-weaver money-spider Linyphiinae Erigoninae microhabitat litter-dwelling cryptic understudied taxonomic-revision morphological-taxonomy light-microscopy species-description biogeography glacial-refugia post-glacial-colonization endemic regional-endemic alpine-endemic Arctic-endemic boreal-forest taiga rocky-habitat meadow wetland stream-margin snowbed fellfield heath moss lichen vegetation soil-surface stone rock boulder scree talus debris humus organic-layer permafrost polar subpolar cold-stenotherm stenotherm stenotopic habitat-specialist conservation rare data-deficient IUCN red-list natural-history systematics phylogeny molecular-systematics DNA-barcoding COI cytochrome-oxidase 28S 18S ITS morphology taxonomy alpha-taxonomy revision monograph faunistics chorology zoogeography dispersal vicariance speciation cryptic-species species-complex species-group species-aggregate subspecies infraspecific variation polymorphism sexual-dimorphism male female juvenile instar ecdysis molting development growth reproduction mating courtship sperm-transfer spermatophore pedipalp palpal-organ copulatory-organ genitalia epigyne vulva spermatheca fertilization-duct copulatory-duct atrium scape maceration dissection microscope stereomicroscope compound-microscope illustration drawing photography SEM scanning-electron-microscopy habitus dorsal ventral lateral prosoma opisthosoma abdomen cephalothorax carapace sternum chelicera fang leg tarsus metatarsus tibia patella femur coxa trochanter spinneret colulus tracheal-spiracle book-lung cuticle seta hair spine macroseta sensillum chaetotaxy eye oculus ocelli anterior-median-eye posterior-median-eye anterior-lateral-eye posterior-lateral-eye eye-tubercle clypeus fovea pedicel waist constriction color pattern pigmentation melanism albinism size measurement total-length carapace-length carapace-width abdomen-length leg-length leg-formula index ratio proportion allometry ontogeny subadult adult maturity sexual-maturity reproductive-maturity longevity life-span generation-time voltinism univoltine semivoltine biennial perennial overwintering diapause quiescence cold-hardiness freeze-tolerance freeze-avoidance supercooling cryoprotectant glycerol sorbitol trehalose thermal-biology thermoregulation behavioral-thermoregulation postural-thermoregulation activity diurnal nocturnal crepuscular matutinal vespertine circadian rhythm seasonal phenology calendar date month activity-period breeding-season oviposition egg egg-sac cocoon silk web sheet-web tangle-web space-web platform-web dome-web bowl-web funnel retreat signal-line dragline attachment-disc ampullate-gland cylindriform-gland aciniform-gland aggregate-gland flagelliform-gland tubuliform-gland piriform-gland major-ampullate minor-ampullate silk-protein spidroin fibroin sericin glue viscid dry capture-silk dragline-silk safety-line anchor-line frame-line radial-line spiral-line sticky-spiral non-sticky-spiral hub perimeter substrate niche guild functional-group trophic-level carnivore zoophage arthropodivore insectivore prey capture attack subdue immobilize kill feed digest extraoral-digestion sucking-stomach gut midgut hindgut Malpighian-tubule excretion osmoregulation metabolism respiration trachea spiracle gas-exchange circulation hemolymph heart aorta sinus nervous-system brain ganglion nerve sensory-organ mechanoreceptor chemoreceptor thermoreceptor hygroreceptor photoreceptor proprioceptor trichobothrium tarsal-organ slit-sensillum lyriform-organ pedipalp-organ Haller's-organ contact-chemoreceptor gustatory olfactory pheromone semiochemical kairomone allomone synomone communication signal vibration seismic airborne visual chemical tactile copulation insemination sperm spermatozoon median-apophysis terminal-apophysis paracymbium cymbium bulbus tegulum subtegulum radix lamella process apophysis flange hook coil spiral duct reservoir sclerite plate field fossa pocket receptaculum spermathecae gland insemination-duct uterus uterus-externus uterus-internus vagina gonopore ovipositor ovary oviduct follicle vitellogenesis oogenesis spermatogenesis testis vas-deferens ejaculatory-duct seminal-vesicle fecundity fertility clutch-size egg-number hatching emergence ballooning aerial-dispersal silk-dragline gossamer migration movement walking running jumping climbing burrowing hiding refuge shelter defense predation predator-avoidance antipredator crypsis camouflage mimicry aposematism deimatic thanatosis autotomy leg-loss regeneration injury wound healing immune-response hemocyte melanization encapsulation nodule parasite parasitoid pathogen fungus bacterium virus nematode mite grooming cleaning hygiene self-maintenance silk-use web-use prey-capture foraging hunting ambush sit-and-wait active-hunting searching probing testing exploration learning memory cognition behavior ethology ecology population community ecosystem biome biosphere habitat environment abiotic biotic factor temperature humidity moisture precipitation rain snow wind light photoperiod day-length radiation UV soil cover complexity heterogeneity productivity energy nutrient carbon nitrogen phosphorus food-web trophic-interaction predator-prey competition intraspecific interspecific resource partitioning coexistence diversity richness evenness abundance density frequency occurrence presence absence detection sampling collection pitfall-trap quadrat transect hand-collecting beating sifting extraction Berlese Tullgren Winkler flotation sorting preservation ethanol formalin mount slide label catalog database repository museum voucher type holotype paratype syntype lectotype paralectotype neotype topotype original data locality georeference coordinate latitude longitude elevation altitude depth collector determination identification expert specialist literature publication journal article paper book thesis dissertation report checklist online digital archive bibliography reference citation author year volume page figure map table appendix supplementary material methods results discussion conclusion abstract keyword index-term subject topic discipline science biology zoology arachnology entomology evolution phylogenetics biological nature protection management policy legislation restoration monitoring assessment indicator flagship umbrella keystone engineer service function dynamics stability resilience resistance recovery succession disturbance climate change warming glacier range shift expansion contraction fragmentation isolation connectivity corridor network reserve park protected area wilderness urban rural agricultural forestry mining impact threat risk vulnerability sensitivity exposure adaptive capacity mitigation adaptation sustainable use harvest trade economy medicine research education outreach citizen engagement awareness appreciation aesthetic cultural spiritual existence value intrinsic instrumental utilitarian anthropocentric biocentric ecocentric ethic philosophy history discovery expedition voyage survey inventory fauna biota biodiversity life earth planet wildlife animal invertebrate arthropod chelicerate arachnid spider araneomorph entelegyne micryphantid Oreoneta 2004 frigida type-species alpine feeding type-specimen climate-change protected-area
Spintharus
Spintharus is a genus of cobweb spiders (Theridiidae: Argyrodinae) established by Nicholas Marcellus Hentz in 1850. The genus ranges from the northeastern United States to Brazil, with the highest diversity in the Caribbean. A 2018 revision by Agnarsson and colleagues described fifteen new species, many named after celebrities and public figures, making Spintharus notable for having the most species named after celebrities of any spider genus. Molecular evidence indicates that what was historically considered a single widespread species, S. flavidus, actually represents a 30 million year old radiation of at least 16 short-range endemic species in the Caribbean region.
cobweb-spider Theridiidae Argyrodinae Caribbean-endemism cryptic-species celebrity-named-species ballooning GAARLandia biogeography
Spintharus flavidus
Spintharus flavidus is a cobweb spider in the family Theridiidae, historically considered a single widespread species ranging from northern North America to Brazil and throughout the Caribbean. Molecular phylogenetic analysis has rejected this hypothesis, revealing instead a 30 million year old radiation of at least 16 distinct species in the Caribbean region alone. Nearly all are short-range endemics with limited overwater dispersal ability. The Caribbean colonization event occurred approximately 30 million years ago, coinciding with the GAARLandia landbridge hypothesis.
cryptic-species island-biogeography molecular-systematics GAARLandia ballooning Theridiidae Caribbean-endemism short-range-endemism species-complex
Synema
Synema is a genus of crab spiders (Thomisidae) with a wide distribution across most parts of the world. The genus includes species with high morphological variability, as demonstrated by integrative studies combining molecular and morphological data. Some species, such as S. globosum, exhibit deep mitochondrial divergence without corresponding nuclear or morphological differentiation, complicating species delimitation. Members of this genus are typically found in leaf-dwelling habitats and exhibit ballooning behavior as juveniles, which contributes to their broad geographic range.
crab-spider Thomisidae cryptic-species morphological-variability ballooning Palaearctic leaf-dwelling DNA-barcoding species-delimitation integrative-taxonomy
Thanatus
false crab spiders, running crab spiders
A genus of running crab spiders (family Philodromidae) described by C.L. Koch in 1837. Adults reach 5–6 mm in body length and are primarily ground-dwelling hunters found on low vegetation and open surfaces. The genus is distinguished from similar Philodromus by eye arrangement differences and is characterized by a prominent leaf-like cardiac mark on the anterior dorsal abdomen. Thanatus species overwinter as adults and are among the most abundant active spiders in early spring in temperate regions.
spider Philodromidae running-crab-spider ground-dwelling spring-active ballooning temperate
Thanatus formicinus
Running Crab Spider, Ant-mimic Crab Spider
Thanatus formicinus is a running crab spider in the family Philodromidae with a Holarctic distribution spanning North America, Europe, and Asia. It is a ground-dwelling hunter active during spring and early summer, often observed basking on warm surfaces like concrete paths. The species exhibits ant-mimicry in both appearance and behavior, a distinctive trait among crab spiders.
Philodromidae running-crab-spider ant-mimic ground-dwelling spring-active Holarctic basking-behavior ballooning spider-wasp-prey
Thanatus striatus
Striped Running Crab Spider
Thanatus striatus is a running crab spider in the family Philodromidae, characterized by its striped cephalothorax and ground-dwelling hunting behavior. The species has a broad distribution across the Northern Hemisphere, including North America, Europe, Turkey, Russia, and Central Asia. It is active primarily in spring and early summer, with adults capable of overwintering. The species is distinguished from similar slender crab spiders by its more robust body form and preference for ground-level habitats.
Philodromidae running-crab-spider ground-dwelling spring-active transcontinental-distribution ambush-predator ballooning
Thanatus vulgaris
Cricket Thief Spider
Thanatus vulgaris is a running crab spider in the family Philodromidae with a remarkably wide global distribution spanning native Palearctic ranges and introduced populations across multiple continents. The species occupies diverse terrestrial habitats from natural grasslands and shrublands to agricultural systems. It is known for ground-dwelling behavior and has been observed engaging in ballooning dispersal. Two subspecies are recognized: T. v. vulgaris and T. v. creticus.
spider Philodromidae running-crab-spider introduced-species ground-dwelling ballooning winter-active agricultural-habitat
Thyridopteryx
bagworm moths
Thyridopteryx is a genus of bagworm moths (Psychidae) comprising five described species. The genus is best known for T. ephemeraeformis, the evergreen bagworm or North American bagworm, a significant pest of ornamental and landscape plants. Larvae construct protective cases from silk and plant fragments, which they carry throughout their development. The genus exhibits unusual sexual dimorphism: males are winged and capable of flight, while females are wingless and remain within their cases for life.
Psychidae bagworm pest ornamental-plants sexual-dimorphism ballooning case-construction thermal-biology USA-NPN-Pheno-Forecast mating-disruption parasitoid-host polyphagy invasive-potential
Thyridopteryx ephemeraeformis
Evergreen Bagworm Moth, Eastern Bagworm, Common Bagworm, Common Basket Worm, North American Bagworm
Thyridopteryx ephemeraeformis, the evergreen bagworm moth, is a polyphagous pest species in the family Psychidae. Larvae construct distinctive silken bags decorated with plant fragments, which they carry throughout their development. Males emerge as winged adults with nearly scale-free, transparent wings—reflected in the genus name derived from Greek thyris (window) and ptera (wing). Females remain wingless and never leave their bags, releasing sex pheromones to attract mates. The species exhibits remarkable sexual dimorphism in both morphology and behavior, with males and females showing differential stratification on host trees and distinct pupation heights.
bagworm Psychidae pest ornamental-pest sexual-dimorphism pheromone ballooning polyphagy IPM
Trichonephila
Banded Orbweavers, Golden Orb-weavers
Trichonephila is a genus of large orb-weaver spiders renowned for constructing massive, golden-hued webs. Females exhibit pronounced sexual size dimorphism, reaching 12–40 mm in body length while males remain much smaller. The genus was elevated from subgenus status in 2019 and now encompasses 13 species distributed across tropical and subtropical regions worldwide. Several species, including the Jorō spider (T. clavata) and golden silk spider (T. clavipes), have become notable invaders in North America, with T. clavata demonstrating remarkable cold tolerance and rapid range expansion along the eastern United States.
orb-weaver sexual-dimorphism invasive-species ballooning golden-silk urban-tolerance biological-control
Trichonephila clavata
Jorō spider, Joro Spider, Parachute spider
Trichonephila clavata, commonly known as the Jorō spider, is a large orb-weaving spider native to East Asia that has become established as an invasive species in the southeastern United States since approximately 2010. First confirmed in Georgia in 2014, it has expanded rapidly across multiple states through a combination of ballooning dispersal and human-mediated transport. The species is notable for its substantial size, striking coloration, and extensive golden webs, but poses minimal risk to humans due to small fangs and docile behavior. Its physiological adaptations—including higher metabolic rate, faster heart rate, and greater cold tolerance than its congener Trichonephila clavipes—suggest potential for continued northward range expansion.
invasive-species orb-weaver ballooning urban-wildlife biological-control cold-tolerance startle-response cannibalism kleptoparasitism Japanese-folklore Nephilidae Trichonephila spider-silk range-expansion physiological-adaptation urban-ecology agricultural-pest-predator iNaturalist Georgia Maryland East-Asia United-States spider-bite venom docile non-aggressive web-architecture egg-sac overwintering sexual-dimorphism metabolic-rate heart-rate freeze-tolerance road-ecology prey-capture competition native-spider-impacts public-perception media-sensationalism management pesticide-alternatives broom-removal ornamental structural-pest ornithology cardinal web-strength trophic-interactions DNA-metabarcoding diet-analysis species-distribution-model physiological-entomology behavioral-ecology arachnology ballooning-dispersal human-mediated-dispersal hitchhiker cargo-stowaway port-of-entry climate-change warming northward-expansion DMV Howard-County Elkridge Ilchester West-Elkridge beech-forest secondary-forest suburban roadside telephone-pole streetlamp forest-edge disturbance-tolerance prey-detection vibrational-noise auditory-disturbance motionless freezing shyness Hannibal-Lecter stink-bug lanternfly evolutionary-history ancient-association ecosystem-service biocontrol natural-enemy invasive-pest brown-marmorated-stink-bug spotted-lanternfly Halyomorpha-halys Lycorma-delicatula competitive-exclusion dominant-orb-weaver abundant population-growth rapid-spread range-span 120,000-km2 physiological-plasticity metabolism twice-as-high 77%-higher-heart-rate 74%-freeze-survival development-rate seasonal-window life-cycle-completion thermal-limitation congener-comparison natural-dispersal human-transport iNaturalist-record citizen-science confirmed-sighting breeding-population male-and-female gravid-female egg-case stowaway cargo-container port-introduction local-port vehicle-transport hitchhiking accelerated-arrival several-years natural-means prognostication prediction model suitable-habitat abundant-suitable-habitat eastern-North-America western-North-America potential-range invasive-range potential-impact environmental-impact ecological-impact ecosystem-impact monitor cautious evidence-based reasonable-journalism sensationalism exaggeration uncritical-acceptance harmless carefully-monitored next-steps research-opportunity call-for-research knowledge-gap little-known novel-ecosystem spreading rapidly-expanding invasive-predator invasive-orb-weaver non-native introduced established colonized thriving doing-fine happy merely-20-minutes-away road-trip visit access-spread beech-leaf-disease BLD state-forest remarkable-colony amongst-beech-trees confirmed-prognostication Davis-and-Frick escape-relative-warmth expand-range-northward eastern-seaboard merely-20-minutes-away-from-home resist-opportunity amazing-predators tales-of-arrival previous-episodes 2022 2024 reduce-angst large-non-native-spider establishing-in-DMV facts-presented past-episode venomous-terrible-painful Nah expert-Rick-Hoebeke risks-small puny-fangs unlikely-pierce-skin video completely-non-aggressive eastern-Howard-County haphazard-webs littered-with-remains former-victims leaves shed-exoskeletons much-larger-female dwarfs-mate positioned-just-above strand-of-silk spinnerets underside-of-abdomen near-red-mound relative-to-hand large-and-docile wait-and-see what-Jorō-means-to-ecosystems help-other-spiders put-a-beat-down-on-invasive-pests stink-bugs spotted-lanternflies passive-hunters enormous-webs larger-than-a-meter-in-diameter capture-prey-snared-in-silk arachnophobes-scary arachnophiles-beautiful important-ecosystem-services crop-pests native-range Asia having-an-old-friend-over-for-dinner reunite first-time large-spiders juicy-prey-items feathered-and-non-feathered-reptiles poses-no-known-threat difficult-to-predict-impact non-native-species experts-suggest beyond-scary-mien give-indigenous-large-orb-weavers-run-for-their-money black-and-yellow-garden-spider marbled-orb-weaver spotted-orb-weaver other-parts-of-world most-abundant-and-dominant-orb-weaver what-will-it-mean only-time-will-tell final-tidbit Jorō-shapeshifter Jorō-gumo beautiful-woman seduces-men binds-with-silk devours bad-date acknowledgements Rick-Hoebeke identifying-Jorō insights David-Coyle Bob-Bellinger great-images knowledge studies Veni-vidi-vici Nelsen-et-al.Physiological-evaluation Nephila-clavata-newly-recorded Hoebeke-et-al.Life-Cycle-Habitat-and-Variation Moore Startle-responses Davis-and-Anerao How-Urban-Tolerant-Are-They Davis-et-al.inspiration details stars Dave-Clement Miri-Talabac Maddie-Potter hooked-up-with-colony differentiate resources.ipmcenters.org link Jorō-guru David-Coyle's-take YouTube calm-your-fears Journal-of-Economic-Entomology Journal-of-Medical-Entomology chemical-management-strategies effective-management-methods spider-control-products safe-and-effective unlikely-to-bite generally-harmless big-spiders colorful-spiders invasive-spiders in-your-face-spiders webs-on-homes landscape-plants structures middle-of-where-people-live-work-and-play northern-Georgia-2014 presumed-arrived-few-years-prior 15-years increased-dramatically much-of-Southeast disjunct-populations northeastern-U.S.firestorm-of-interest rapidly-expanding-range southeastern-states many-counties Carolinas Tennessee Oklahoma more-than-a-century parts-of-Florida rarely-Pennsylvania tropics thermal-limitations higher-metabolism faster-heart-rate better-ability-to-tolerate-freezing complete-life-cycle-rapidly chilly-temperatures suite-of-adaptations expand-northward warm-loving-cousin findings-support-potential much-yet-to-be-learned successfully-survive-northern-winters nation-and-world-warm southern-species-expand higher-latitudes-and-altitudes rapidly-range-expansion-will-occur typical-mode-of-dispersal aerial-dispersal ballooning-on-strands-of-silk Charlotte's-babies Charlotte's-Web spectacular-moniker parachute-spider rain-down-from-airplanes long-distance-transit human-assistance good-hitchhikers inseminated-gravid-female egg-case-stowaway arrival-in-DMV several-years-by-natural-means new-introduction-at-local-port human-assist-in-vehicles accelerate-arrival terrible-and-painful small-fangs visited-cousin golden-silk-spider Costa-Rica exceeding-meter-diameter indigenous-large-orb-weavers run-for-their-money minimal-direct-impact firestorm Andrew-Davis Benjamin-Frick University-of-Georgia past-week native-to-eastern-Asia Japan China Korea Taiwan known-in-Georgia-since-2013 spreading-rapidly joined-its-cousin Trichonephila-clavipes established-over-160-years better-tolerate-freezing survive-northern-winters rapidly-range-expansion typical-mode long-distance new-introduction human-assist arachnophobes arachnophiles brown-marmorated-stink-bugs difficult-to-predict scary-mien indigenous-orb-weavers Mary-Nouri Sarah-Morgan WAMU relatively-harmless spider-season fall leaves-changing-color cool-crisp-autumn-air pumpkin-spice extension-entomologist Southeast not-just-spiders 20-feet-wide homes people-live-work-and-play 15-years-or-so influx-of-calls public entomology-extension-programs media-frenzy two-questions get-rid-of-Jorō-spiders are-Jorō-spiders-dangerous Clemson-University Southern-Adventist-University Washington-College Union-College two-new-studies test-methods-for-eliminating how-likely-to-bite harm scoured-internet recommended-treatment-options spider-specific-management-recommendations medically-relevant widow-spiders brown-recluses do-not-enter-homes relatively-new recommended-products labelled-spider-control-products tested-products several-products-eliminate not-legal-pesticides machine-lubricant not-recommended commercially-available strongly-encourage labelled-products easiest-and-cheapest without-chemicals broom-or-stick walked-into-spider-web rode-bike took-spider-to-face not-great-feeling wonder-if-bitey give-bitten-superpowers unique-studies evaluated-behaviors react-to-people rather-drop-off-web hang-around-and-bite really-provoke volunteered-to-get-bitten yes-you-read-correctly akin-to-mosquito-bite little-redness little-swelling largely-gone-next-day no-acquired-superpowers take-home-message twofold simplest-and-most-effective without-pesticides feel-you-need-pesticides product-labeled-for-spider-control try-not-to-freak-out doesn't-want-to-be-on-you odds-of-getting-bitten-extremely-low enjoy-glorious-fall-weather drink-pumpkin-spiced-beverage watch-where-you-walk Keep-calm-and-carry-on bites-unlikely cause-minimal-discomfort associate-professor Department-of-Forestry-and-Environmental-Conservation socials email extension featured pest-management Entomology-Today latest-posts email-subscription March-2022 wondered make-its-way-to-DMV September-2022 two-observations three-years 40-sightings happy-and-doing-just-fine several-Howard-County-locations week-or-so-ago team-of-scientists University mission killing-ultra-valuable-beech-trees thriving-amongst-beech-trees visit-amazing-predators mature-females both-Trichonephila-species three-locally-common-orb-weaving-species time-spent-immobile mild-disturbance brief-puff-of-air air-puff-response-data five-other-North-American-species published-literature 453-observations freezing-behavior 10-spider-species remained-immobile-under-a-minute both-Trichonephila-spiders over-an-hour unprecedented shyest-ever-documented tolerate-urban-environments remaining-motionless fleeing nonsexual-cannibalism mating-activity females-cannibalize-males food-availability territorial-aggression Southeastern-United-States expanding-range shy behavioral-reactions descriptive-observations photo-documentation anecdotal-observations controlled-pairings lab natural-webs field one-female-biting-and-killing-another short-fight similar-size container 25-trials fights-ensued-40%different-sizes 27-trials fights-happened-18%larger-females-not-always-aggressor 52-lab-trials six-bouts 9%direct-killing field-trials empty-web 14-trials one-fight 7%aggressor-killing-and-wrapping silk away-from-any-web not-necessarily-territoriality intraspecific-aggression provoked-or-stressed deserves-more-study newly-invasive biology physiology new-range closely-related-species successfully-established 160-years investigation compare online-records iNaturalist.org seasonal-distributions timing females physiological-traits environmental-tolerance metabolic-rates cardiac-functioning cold-exposure survival brief-below-freezing-temperature shorter-season complete-lifecycle narrow-period suitable-weather inherently-higher-metabolism low-temperature survive-better 74%-compared-to-50%brief-freeze colder-climatic-region southeastern-USA useful-information planning urban-landscapes busy-roads frequent-disturbances auditory-and-vibrational physiological-or-behavioral-changes northeast-Georgia varying-levels-of-road-traffic prey-capture-behavior simulated-prey tuning-fork 128-hz-frequency touched-to-web attacked 357-total-trials 20-different-roads attacked-59%high-variability some-roadsides-over-80%others-less-than-30%small-but-significant-negative-correlation daily-road-traffic spider-attack-rates moderate--to-heavy-traffic-roads slightly-less-likely-to-attack 51%-vs-65%able-to-live-near-roads cost-in-terms-of-prey-capture did-not-weigh-less compensate-for-disturbance accumulating-evidence human-dominated-landscapes aid-spread introduced-range Eriostethus-rufus polysphinctine-ectoparasitoid araneid-spiders Neoscona-spp.endemic-to-Japan Yamagata-Prefecture 38º46'-N northern-Japan northernmost-record genus identification-confirmed morphology DNA-barcoding cocoon large-modified-web unique inverted-triangle over-50-cm hanging-from-ill-defined-part no-organized-structure host-spider circumstantial-evidences structure-of-modified-web pre-existing-web-partly-reused orb-web-completely-removed sustaining-threads-newly-moored parasitises-host-spiders two-subfamilies unusual-for-group invasion-potential known-invasive-range review dispersal-abilities potential-impacts management-strategies October-2022 at-least-120,000-km2 South-Carolina North-Carolina Alabama West-Virginia pattern-of-spread natural-dispersal-mechanisms human-mediated-transport large-bodied-orb-weavers flying-insects small-animals thirteen-co-occurring-spider-species monitored-for-competition resources web-building-sites natural-and-urban-habitats management-options-limited advise-journalists-and-experts against-exaggerating-potential-environmental-impact ecologically-harmless rapid-spread-carefully-monitored cautious-evidence-based-approach determining-next-steps three-material-types web-capture introduced-species alter-established-trophic-interactions molecular-analysis resolve-changes community-structure foraging-links east-coast fecal-samples prey-remains-from-webs dissected-guts compare-diet-composition arthropod-targeted-COI-primers Illumina-MiSeq 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higher-elevations significantly-lower-temperatures adaptation-limited-to-milder-cold-regions new-insight adaptation need-for-further-research non-native-habitats eggs overwinter harsh-weather-conditions no-protection compact-silk-case milky-coating chorionic-microspheres CM fine-structural-characteristics ecological-importance uneven-size-distribution outer-eggmass evenly-covered single-layer diameter-2.3-µm short-papillary-projections segmental-adhesion mucous-components insoluble-in-water partially-soluble-in-absolute-ethanol spherical-structure HFIP strong-organic-solvent not-derived-from-vitellogenic-or-choriogenetic-processes CM-adhesive-coatings ovipositional-process equivalent-to-cocoon-silk protective-functions silken-eggcase Northern-Cardinal Cardinalis-cardinalis perches steals-food southeast-of-the-United-States questions native-fauna-affected consuming-prey-items example native-species-deriving-benefit manner-of-kleptoparasitism perched-directly-on-web supported-its-weight 42-48-g first-documented-case spider-web-supporting-perching-bird measurements force-gauge typical-webs support-masses-up-to-70-g small-but-growing-body-of-knowledge non-native-spider species-distribution-models ecological-niche-modeling predict-areas establish-if-introduced three-distinct-genetic-lineages mitochondrial-COI genome-wide-SNPs Korean-Peninsula
Xysticus
ground crab spiders
Xysticus is a genus of ground-dwelling crab spiders (family Thomisidae) known for ambush hunting on the ground rather than in flowers. These spiders possess elongated first and second pairs of legs with spines that help secure prey. They are among the most frequently observed ballooning spiders, using silk threads to disperse via wind currents. The genus is also a documented prey source for spider wasps in the genus Dipogon.
Thomisidae crab-spiders ballooning ground-dwelling ambush-predator dispersal spring-activity Colorado Wisconsin
Xysticus
Ground Crab Spiders
Xysticus is a large genus of approximately 275–300 species of ground crab spiders in the family Thomisidae. These spiders are ambush predators that do not build webs, instead hunting near the ground by seizing prey with their enlarged anterior legs. The genus exhibits strong sexual dimorphism, with females typically reaching 10 mm in body length while males are roughly half that size. Species identification requires microscopic examination of genitalia due to the morphological similarity among members of the genus.
spider crab-spider ambush-predator ballooning subsocial-behavior biological-control sexual-dimorphism genitalia-identification ground-dwelling Thomisidae
Xysticus auctificus
Xysticus auctificus is a species of ground crab spider in the family Thomisidae, distributed across north-central North America. As a member of the genus Xysticus, it exhibits the characteristic crab-like leg arrangement and ambush hunting strategy typical of this diverse spider group. The species has been documented in prairie and grassland habitats, where it relies on crypsis to capture prey.
crab-spider Thomisidae ground-spider ambush-predator ballooning prairie-fauna North-America Great-Plains
Xysticus canadensis
Canada ground crab spider
Xysticus canadensis is a species of ground crab spider in the family Thomisidae, first described by Gertsch in 1934. It is distributed across northern North America and extends into Russia. As a member of the genus Xysticus, it exhibits the characteristic ambush-hunting behavior and flattened body form typical of ground crab spiders. The species overwinters as an adult or immature, emerging in early spring to hunt and reproduce.
crab-spider ground-spider ambush-predator ballooning overwintering-adult northern-distribution Thomisidae Xysticus
Xysticus chippewa
Xysticus chippewa is a crab spider species in the family Thomisidae, first described by Gertsch in 1953. As a member of the genus Xysticus, it is a ground-dwelling ambush predator that does not construct webs to capture prey. The species occurs in northern North America, with records from the Canadian provinces of Alberta, Manitoba, and Saskatchewan. Like other Xysticus species, it has been observed engaging in ballooning behavior for dispersal.
crab-spider Thomisidae ground-spider ambush-predator ballooning northern-distribution prairie-fauna
Xysticus emertoni
Emerton's Crab Spider
Xysticus emertoni, commonly known as Emerton's crab spider, is a species of ground crab spider in the family Thomisidae. It occurs across a broad transcontinental range spanning North America and Eurasia, including the United States, Canada, Russia, and Central Asia through China. As a member of the genus Xysticus, it exhibits the typical crab spider body plan with laterally extended legs adapted for ambush predation. The species has been documented as prey for spider wasps in the genus Dipogon.
crab-spider Thomisidae ground-dwelling ballooning transcontinental-distribution ambush-predator early-spring-activity
Xysticus fraternus
Brotherly Ground Crab Spider
Xysticus fraternus is a species of ground crab spider in the family Thomisidae. It occurs in the United States and Canada. Like other members of the genus Xysticus, it is an ambush predator that does not construct webs to capture prey. The species is part of a diverse genus of crab spiders that includes many habitat generalists.
Thomisidae crab-spider ground-crab-spider ambush-predator ballooning North-America
Xysticus funestus
mournful ground crab spider, sad ground crab spider, deadly ground crab spider
Xysticus funestus is a ground crab spider in the family Thomisidae, native to North America. It is one of many ambush-hunting crab spiders that rely on elongated front legs to capture prey. The species has been documented in field observations as an adult in early spring and has been recorded as prey for the spider wasp Dipogon calipterus. Despite its alarming common name "deadly ground crab spider," it poses no medical threat to humans.
Thomisidae ground-crab-spider ambush-predator North-America ballooning spider-wasp-prey non-medical-bite-risk spring-activity overwintering-adult gravid-female-March-observation Colorado Wisconsin Dipogon-calipterus-prey-record concrete-path-habitat mailbox-post-observation forest-edge leaf-litter-overwintering misleading-common-name Keyserling-1880
Xysticus gulosus
Xysticus gulosus is a species of crab spider in the family Thomisidae, described by Keyserling in 1880. It belongs to the genus Xysticus, a diverse group of ground-dwelling ambush predators commonly known as ground crab spiders. The species is distributed across North America, with confirmed records from the Canadian provinces of Alberta, Manitoba, and Saskatchewan. Like other members of its genus, it likely employs a sit-and-wait hunting strategy, using its enlarged front legs to capture prey.
spider crab-spider Thomisidae Xysticus North-America Canada Alberta Manitoba Saskatchewan ballooning ambush-predator ground-dwelling
Xysticus locuples
Xysticus locuples is a species of crab spider in the family Thomisidae, first described by Keyserling in 1880. It is distributed across North America, with records from Canada and the United States including Alberta. As a member of the genus Xysticus, it belongs to a group of ground-dwelling ambush predators commonly known as ground crab spiders. The genus Xysticus is known for species that employ ballooning as a primary dispersal mechanism, particularly in spring and fall.
crab-spider Thomisidae ground-crab-spider ballooning ambush-predator North-America spider-dispersal Xysticus
Xysticus luctuosus
Xysticus luctuosus is a species of ground crab spider in the family Thomisidae, first described by Blackwall in 1836. It has a broad distribution spanning North America, Europe, Turkey, the Caucasus, Russia (from European to Far East regions), Kazakhstan, Iran, and Central Asia. As a member of the genus Xysticus, it exhibits the characteristic crab spider body plan with laterally extended legs adapted for ambush predation. The species has been documented in 45 iNaturalist observations, indicating moderate citizen science engagement.
crab-spider ground-spider ambush-predator ballooning transcontinental-distribution Thomisidae Xysticus
Xysticus obscurus
Xysticus obscurus is a species of ground crab spider in the family Thomisidae, first described by Collett in 1877. It is a holarctic species with a broad distribution spanning North America, Europe, and across Russia from European Russia to Siberia. As a member of the genus Xysticus, it is an ambush predator that does not construct webs for prey capture. The species has been documented in Alberta, Canada, and is part of a genus known for ballooning behavior as a dispersal mechanism.
crab-spider ground-crab-spider Thomisidae ballooning holarctic ambush-predator
Xysticus pellax
Xysticus pellax is a species of crab spider in the family Thomisidae, first described by O. Pickard-Cambridge in 1894. It is native to North America, with records from Canada and the United States. Like other members of its genus, it is a ground-dwelling ambush predator.
crab-spider Thomisidae ground-crab-spider ambush-predator ballooning North-America Canada USA
Xysticus punctatus
Punctated Ground Crab Spider
Xysticus punctatus is a ground-dwelling crab spider in the family Thomisidae. It is found in the United States and Canada, with records from provinces including Alberta, British Columbia, and Manitoba. As a member of the genus Xysticus, it shares the characteristic crab-like posture and ambush hunting strategy of its relatives.
crab-spider ground-crab-spider ballooning Thomisidae ambush-predator
Xysticus speciese
Xysticus speciese is a species of crab spider in the family Thomisidae. The genus Xysticus is characterized by ambush hunting behavior and distinctive leg morphology adapted for seizing prey. Members of this genus are typically ground-dwelling and known to overwinter as adults or immatures.
crab-spider Thomisidae overwintering ambush-predator ballooning spring-activity ground-dwelling temperate
Xysticus triguttatus
Three-banded Crab Spider
Xysticus triguttatus, commonly known as the three-banded crab spider, is a small ambush-hunting spider in the family Thomisidae. The species is widely distributed across North America, with records from the United States and Canada including Alberta, Manitoba, and Saskatchewan. As a member of the genus Xysticus, it exhibits the characteristic crab-like posture and hunting behavior typical of ground crab spiders, lying in wait for prey rather than constructing webs.
crab-spider ambush-predator ballooning ground-dwelling North-America Thomisidae