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Anurida
Anurida is a genus of springtails (Collembola) in the family Neanuridae, established in 1865 by Laboulbène. The genus has cosmopolitan distribution with species occupying diverse habitats including intertidal marine zones, river floodplains, riparian areas, and forest ecosystems. Well-studied species include the intertidal specialist Anurida maritima, which exhibits complex tidal-entrained behaviors, and the terrestrial A. granaria, which has documented mycophagous associations. The genus shows notable morphological diversity in chaetotaxy and eye reduction, with some species groups exhibiting cryptic genetic divergence despite morphological similarity.
Collembola springtails intertidal tidal-behavior cryptic-species endosymbionts Wolbachia Spiroplasma diapause univoltine mycophagy chaetotaxy Neanuridae cosmopolitan-distribution circatidal-rhythm egg-diapause salt-marsh river-floodplain riparian-zone forest-habitat Beringian-fauna genetic-divergence-without-morphological-change tidal-entrainment aggregation-behavior sexual-dimorphism-in-foraging starvation-mortality holometabolous-like-development setal-reduction ocelli-reduction hammerae-group Anurida-maritima-species-group Laboulbène-1865 Poduromorpha Neanurinae Pseudachorutinae terrestrial marine-intertidal freshwater-riparian nutrient-cycling organic-matter-decomposition fungal-dispersal apothecia-feeding clay-wall-nests air-filled-cavities tidal-refuge weather-dependent-activity temperature-dependent-diapause-termination mitochondrial-genome-divergence ancient-circatidal-behavior cytoplasmic-incompatibility male-killing Type-V-cif-genes genome-wide-differentiation Pool-seq-phylogenomics Holarctic-distribution temperate-zone-adaptation overwintering-eggs autumn-mortality physiological-stress foraging-efficiency low-temperature-limitation tidal-inundation-response behavioral-synchronization nest-construction sexual-reproduction colonial-aggregation fungal-association Peziza-arvernensis riverina granaria octoculata hirsuta elegans reducta narli bisetosa Vladivostok-Botanical-Garden Primorsky-Krai Poland Southern-Brazil North-western-Europe United-Kingdom The-Netherlands Andean Arctic Sub-arctic Cape Caribbean Central-Australia coniferous-broadleaved-forest protected-forest vertical-clay-walls creek-walls salt-marsh-foraging marsh-wandering nest-marsh-exchange molting-refuge egg-deposition-sites sexually-mature-aggregation hibernating-eggs spring-hatching summer-egg-laying autumn-diapause-termination winter-development-suppression adult-death starvation-risk glycogen-depletion lipid-depletion body-size-decline sluggishness-at-low-temperature limited-low-water-period temperate-survival-strategy cosmopolitan-species-with-local-adaptation genetic-crosses-needed sex-ratio-studies-needed endosymbiont-effects-unknown reproductive-manipulation-potential selfish-genetic-elements maternal-inheritance phylogenomic-analysis single-copy-orthologous-genes nuclear-genome-divergence mitochondrial-lineage-association species-group-concept morphological-stasis evolutionary-divergence systematic-revision-needed tribe-validity Neanurinae-subdivision Pseudachorutinae-placement higher-rank-taxonomy-match GBIF-records iNaturalist-observations Catalogue-of-Life-acceptance NCBI-taxonomy Entognatha Hexapoda Eukaryota Metazoa Animalia Arthropoda springtail-biodiversity soil-mesofauna intertidal-invertebrate marine-terrestrial-transition-zone estuarine-ecology tidal-flat-ecology floodplain-ecology riparian-ecology forest-floor-ecology mycophagous-collembolan fungal-feeding-springtail nutrient-cycler decomposer detritivore organic-matter-processor ecosystem-engineer-(nest-construction)microhabitat-specialist habitat-partition sexual-dimorphism behavioral-plasticity environmental-cue-response phototaxis-modification thermotaxis-response hydrotaxis-response aggregation-pheromone-(inferred)social-behavior-(colonial)reproductive-behavior courtship oviposition-site-selection egg-guarding-(absent)diapause-evolution life-history-strategy univoltinism semelparity-(effective)annual-life-cycle seasonal-polyphenism-(absent)developmental-arrest cold-requirement-for-development temperature-threshold 5°C-diapause-termination spring-warming-trigger phenology population-dynamics demography mortality-factor starvation environmental-stress climate-sensitivity habitat-specificity endemism-(some-species)cryptic-biodiversity molecular-taxonomy integrative-taxonomy phylogeography population-genetics genomic-resources Wolbachia-genome Spiroplasma-genome bacterial-endosymbiosis host-microbe-interaction reproductive-parasitism mutualism-(unknown)commensalism-(unknown)symbiont-phylogeny horizontal-gene-transfer-(absent-in-data)prophage-genes cif-gene-evolution Type-V-clade male-killing-gene-absence CI-gene-presence wmk-gene-presence SpAID-absence bacterial-genome-reduction-(inferred)host-adaptation coevolution symbiont-sharing-between-host-lineages genetic-divergence-with-symbiont-sharing speciation-mechanism reproductive-isolation cytoplasmic-incompatibility-as-speciation-driver-(unlikely-given-identical-cif-sequences)alternative-speciation-mechanisms ecological-speciation behavioral-isolation habitat-isolation temporal-isolation geographic-isolation allopatric-divergence parapatric-divergence sympatric-divergence-(possible)cryptic-species-identification-challenge morphological-taxonomy-limitations molecular-systematics-necessity DNA-barcoding genome-skimming Pool-seq phylogenomic-inference species-delimitation integrative-species-concept operational-taxonomic-unit evolutionary-significant-unit conservation-unit biodiversity-assessment faunistics biogeography dispersal-ability passive-dispersal active-dispersal habitat-fidelity site-fidelity nest-fidelity philopatry-(inferred)population-structure gene-flow genetic-differentiation isolation-by-distance isolation-by-environment local-adaptation phenotypic-plasticity genetic-accommodation evolutionary-developmental-biology evo-devo setal-development sensory-organ-development eye-reduction-evolution cave-adaptation-(absent)soil-adaptation intertidal-adaptation desiccation-resistance-(inferred)salinity-tolerance hypoxia-tolerance-(inferred)nest-air-pocket-maintenance respiratory-adaptation cuticular-waterproofing-(inferred)osmoregulation ion-regulation excretory-system Malpighian-tubules-(standard)labial-glands digestive-system midgut hindgut feeding-apparatus maxilla mandible labrum epipharynx hypopharynx mouthparts-entognathous head-capsule antennae segment-number segment-fusion thorax abdomen furca-(absent-in-some-Neanuridae)tenaculum collophore ventral-tube reticulate-pattern pigmentation coloration size-variation body-shape cylindrical-body setal-arrangement macrosetae microsetae sensory-setae mechanoreceptors chemoreceptors hygroreceptors thermoreceptors photoreceptors ocelli-structure eye-number-reduction eye-complete-loss-(some-species)pigment-loss cuticular-granulation cuticular-tubercles cuticular-scales body-sclerotization intersegmental-membranes appendage-structure leg-segmentation claw-structure unguiculus tenent-hair empodial-appendage tibiotarsus femur trochanter coxa subcoxa abdominal-segmentation tergite-structure sternite-structure pleurite-structure tergal-chaetotaxy sternal-chaetotaxy pleural-chaetotaxy axial-setae paraxial-setae marginal-setae p-row-setae a-row-setae m-row-setae setal-formula setal-nomenclature Fjellberg-system Gisin-system taxonomic-stability nomenclatural-acts type-species type-locality type-specimen original-description subsequent-redescriptions faunal-revisions catalogues checklists databases GBIF iNaturalist NCBI BOLD COL ITIS Encyclopedia-of-Life Wikipedia primary-literature taxonomic-literature ecological-literature physiological-literature genomic-literature symbiont-literature behavioral-literature entomology acarology soil-zoology marine-biology intertidal-ecology estuarine-science limnology freshwater-biology terrestrial-ecology forest-ecology fungal-ecology microbial-ecology symbiosis-research evolutionary-biology population-biology conservation-biology biodiversity-science systematics phylogenetics paleontology-(absent)fossil-record-(absent)amber-inclusion-(possible-but-unreported)subfossil-(absent)quaternary-record-(absent)historical-ecology anthropogenic-impact pollution-sensitivity bioindicator-potential conservation-status-(unevaluated)IUCN-Red-List-(absent)habitat-protection-needs protected-area-occurrence invasive-potential-(low)agricultural-pest-(absent)household-pest-(absent)economic-importance-(minimal)scientific-importance-(high)model-organism-potential teaching-organism research-subject biodiversity-component ecosystem-service-provider cultural-significance-(absent)traditional-knowledge-(absent)indigenous-knowledge-(absent)vernacular-names-(absent)etymology Anurida-(etymology-unknown,-possibly-Greek-'an-'-without-+-'oura'-tail,-referring-to-reduced-furca)Laboulbène 1865 historical-taxonomy classical-taxonomy modern-taxonomy future-research-needs taxonomic-revision phylogenetic-analysis population-genomic-study functional-genomic-study developmental-study physiological-study behavioral-study ecological-study symbiont-study conservation-study
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

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