Hemimetabolous

Guides

Allocapnia rickeri
Midwest Snowfly
Allocapnia rickeri is a small winter stonefly in the family Capniidae, commonly known as the Midwest Snowfly. It is one of numerous small, dark stoneflies in the genus Allocapnia that emerge during cold months when few other insects are active. The species has been documented across the central and eastern United States. Like other capniids, it is associated with clean, cold streams and is an important indicator of water quality.
winter-stonefly bioindicator coldwater Plecoptera Capniidae Allocapnia lotic emergence brachyptery aptery genitalia-identification Frison-1942 Midwest southeastern-US clean-water-indicator January-March small-stonefly wingless-female stream-insect shredder gatherer seasonal-resource water-quality aquatic-insect terrestrial-adult short-lived-adult oviposition submerged-eggs high-dissolved-oxygen low-temperature central-US eastern-US Alabama Arkansas Delaware Georgia Illinois hexapod hemimetabolous Euholognatha Nemouroidea Arctoperlaria Insecta Arthropoda Animalia GBIF Catalogue-of-Life iNaturalist NCBI taxonomy accepted-species 1942 Frison Ricker Midwest-Snowfly snowfly small-dark-stonefly clean-streams rivers well-oxygenated lotic-habitat cold-months winter-activity wing-reduction female-aptery male-flight epiproct paraproct terminalia taxonomic-revision congeners distribution-records observations 9-observations eukaryote metazoan arthropod insect stonefly winter-emerging January February March cold-weather near-freezing below-freezing water-surface submerged-substrates allochthonous-organic-material stream-ecosystems seasonal-food-resource insectivorous-birds predators scarce-prey unpolluted no-economic-importance stream-monitoring water-quality-indicator high-quality-coldwater microscopic-examination taxonomic-keys male-terminalia reliable-separation genitalic-examination overlapping-distribution similar-habitat small-size under-10-mm body-length reduced-wings absent-wings fully-developed-wings specific-identification published-descriptions illustrations subsequent-revisions characteristic family-Capniidae common-name extended-nymphal-period one-to-two-years short-lived does-not-feed aquatic-nymph clean-cold-streams low-temperatures year-round winter-months January-through-March family centered-Midwest extends-southeastern United-States documented appears most-reliably distinguished subtle-differences terminal-abdominal-structures should-be-compared against published subsequent genus-level characterized reduced absent females fully-developed males requires-examination male-genitalia structure paraprocts reliable separation overlaps similar many externally definitive relies microscopic examination comparison keys used biological indicator programs presence indicates cold conditions no-direct economic importance shredders gatherers processing allochthonous organic material stream ecosystems seasonal food resource insectivorous birds other when alternative prey scarce serves high-quality habitats development aquatic nymphal stages terrestrial adult stage nymphs develop streams extended period likely one two years based related species adults do-not feed active during weather air temperatures may near below freezing winged capable flight wingless short-winged remain water surface mating occur winter entering deposit eggs submerged substrates small commonly known numerous dark emerge few insects central eastern associated clean important under mm body length members genus wings possess fully developed specific identification level within requires male genitalia particularly most reliably subtle differences these terminal abdominal structures should compared descriptions taxonomic revisions winter-emerging maintain low high dissolved oxygen levels throughout year United States distribution centered extends southeastern months typically through this activity gives rise common name do not provides quality monitoring no direct habitat morphology size genitalic
Ambrysus
creeping water bugs, saucer bugs
Ambrysus is a genus of creeping water bugs (family Naucoridae) containing more than 90 described species. These aquatic insects are found primarily in running streams across the New World, from northern North America to Argentina, with greatest diversity in Mexico. They possess flattened, rounded bodies and powerful claws for clinging to rocks in turbulent water. The genus includes two subgenera: Ambrysus (Syncollus) and Ambrysus (Ambrysus).
aquatic predator lotic Neotropical Nearctic hemimetabolous benthic
Ambrysus arizonus
Ambrysus arizonus is a creeping water bug (family Naucoridae) in the Ambrysus guttatipennis species complex. It is distributed in both the United States and Mexico, with recent records extending its known range into Mexico. As a member of the Cryphocricinae subfamily, it shares the characteristic saucer-like, flattened body form and aquatic lifestyle typical of this group.
creeping-water-bug saucer-bug aquatic-insect Heteroptera Nepomorpha Ambrysus-guttatipennis-complex Neotropical Nearctic running-water rock-clinging hemimetabolous genitalia-based-taxonomy
Ambrysus hungerfordi
A creeping water bug in the family Naucoridae, described by Usinger in 1946. It belongs to the genus Ambrysus, which is widespread in the New World from northern North America to Argentina, with greatest diversity in Mexican running streams. Like other members of Cryphocricinae, it is aquatic in both nymphal and adult stages.
aquatic creeping-water-bug Naucoridae Cryphocricinae Neotropical running-streams hemimetabolous
Anisoptera
Dragonflies
Anisoptera is the suborder of dragonflies, distinguished from damselflies (Zygoptera) by their larger, stouter bodies, eyes that touch or nearly touch at the top of the head, and wings held horizontally away from the body at rest. The name derives from Greek roots meaning 'unequal wings,' referring to the broader hindwings compared to forewings. With over 3,000 described species globally, dragonflies represent one of the most ancient lineages of flying insects, with fossil relatives dating to the Triassic Period 250 million years ago. Adults are aerial predators with exceptional flight capabilities and vision, while larvae are aquatic predators found in diverse freshwater habitats.
Odonata dragonfly aquatic-insect predator bioindicator hemimetabolous visual-predator territorial-behavior migration freshwater-ecology
Caelifera
Grasshoppers, Locusts, and Allies, Short-horned Grasshoppers
Caelifera is a suborder of Orthoptera comprising approximately 12,000 described species across 2,400 genera, including grasshoppers, ground-hoppers (Tetrigoidea), and pygmy mole crickets (Tridactyloidea). The group is distinguished from the other orthopteran suborder Ensifera by short antennae, enlarged hind legs adapted for jumping, and a stout, chisel-like ovipositor (the source of its Latin name meaning 'chisel-bearing'). Caelifera represents one of the oldest lineages of chewing herbivorous insects, with fossil records extending to the latest Permian. The suborder is divided into two infraorders: Tridactylidea (pygmy mole crickets and extinct relatives) and Acrididea (grasshoppers and ground-hoppers).
orthoptera grasshopper locust pest herbivore jumping-insect agriculture rangeland primary-consumer hemimetabolous
Cercopidae
froghoppers, spittlebugs
Cercopidae is the largest family of Cercopoidea, a group of xylem-feeding insects in the hemipteran suborder Auchenorrhyncha. Commonly called froghoppers or spittlebugs, these insects are known for the frothy protective masses produced by nymphs and the powerful jumping ability of adults. A 2023 phylogenetic study elevated the New World subfamily Ischnorhininae to full family status as Ischnorhinidae, leaving Cercopidae sensu stricto as a monophyletic Old World group comprising two subfamilies: Cercopinae and Cosmoscartinae. Members are significant agricultural pests of forage grasses, sugarcane, and turfgrass throughout tropical and subtropical regions.
xylem-feeding jumping-insects agricultural-pests spittle-masses hemimetabolous vector forage-grass-pests sugarcane-pests turfgrass-pests Old-World-distribution 2023-taxonomic-revision Ischnorhinidae-split
Chloroperlidae
Green Stoneflies, Green Sallies, Yellow Sallies, Yellow Sallflies
Chloroperlidae is a family of stoneflies comprising over 200 species across 22 genera, commonly known as green stoneflies for their characteristic yellowish-green to green coloration. Adults range from 6–20 mm in body length and are distinguished by relatively short cerci, slender labial palps, and wings pads that remain parallel to the body midline. The family exhibits hemimetabolous development with egg, nymph, and adult stages but no pupal stage. Nymphs are aquatic inhabitants of cold, clean streams and rivers across five continents, where their sensitivity to pollutants makes them important bioindicators of water quality. Adults are primarily terrestrial, dwelling in riparian vegetation near water bodies with a brief lifespan focused on reproduction.
stonefly Plecoptera aquatic-insect bioindicator green-stonefly trout-bait hemimetabolous cold-water clean-water-indicator drumming-communication hyporheic-zone riparian spring-emergence polygynous-mating vibrational-signaling
Exapion ulicis
Gorse Seed Weevil
Exapion ulicis is a small seed-feeding weevil specialized on gorse (Ulex europaeus). Adults are light gray with a prominent snout roughly half the body length. The species is native to western Europe and has been introduced to New Zealand, California, Hawaii, and other regions as a biological control agent targeting invasive gorse populations. Larval feeding destroys seeds within pods, reducing plant spread, while adult feeding on stems and spines causes minor damage.
biological-control invasive-species-management seed-predator host-specialization temporal-isolation Brentidae Coleoptera Ulex-europaeus gorse western-Europe California New-Zealand Hawaii spring-activity oviposition-cues pod-fecundity parasitoid seed-destruction noctuid pest-control-agent established-introduction native-range-Europe introduced-range-Pacific Chile Belgium Oregon northern-California forest-gaps pastures natural-areas seed-loss intensity-of-attack reproductive-isolation ecological-specialization sympatric-divergence host-phenology pod-size seed-content female-choice feeding-damage round-holes stem-feeding spine-feeding larval-development pupal-period 6-8-weeks-larval-feeding 2-months-pupation within-pod-development seed-to-ovule-ratio mature-seeds intact-seeds parasitization-rate population-abundance fecund-pod-targeting whole-plant-traits flower-traits pod-traits choice-experiments common-garden Brittany Scotland Reunion host-availability seasonal-activity morphological-identification mitochondrial-sequences nuclear-sequences phylogeny host-races divergent-selection ecological-speciation sympatric-populations spring-infestation autumn-infestation introduced-with-gorse not-initially-introduced invasive-plant plant-insect-interactions oviposition-behavior feeding-behavior preference-patterns multiple-trait-use surface-cues internal-cues pod-characteristics host-choice plant-susceptibility invasion-biology entomological-experimentalis pan-pacific-entomologist diversity-journal ecological-entomology Coombs-2004 HEAR-photo-gallery iNaturalist GBIF NCBI Forster-1771 Curculionoidea Apionidae Fabaceae Genisteae noxious-weed agent-of-biological-pest-control light-gray long-snout straight-snout 2-3-mm small-weevil seed-weevil gorse-seed-weevil established-populations percentage-of-pods-infested spatial-variation temporal-variation seed-set seed-production seed-predation-impact ecosystem-service weed-biological-control classical-biological-control 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population-dynamics metapopulation source-sink dispersal colonization establishment spread impact-assessment non-target-risk efficacy establishment-success population-establishment field-release monitoring evaluation adaptive-management integrated-pest-management sustainable-agriculture conservation-biological-control augmentative-biological-control inoculative-biological-control natural-enemy herbivore phytophagous monophagous oligophagous polyphagous specialist generalist co-evolution coevolutionary-arms-race plant-defense herbivore-offense induced-defense constitutive-defense direct-defense indirect-defense volatile-organic-compounds extrafloral-nectaries trophic-cascades apparent-competition enemy-mediated-apparent-competition intraguild-predation multitrophic-interactions trait-mediated-indirect-effects density-mediated-indirect-effects ecosystem-engineering niche-construction extended-phenotype environmental-feedback eco-evolutionary-feedback evolutionary-rescue genetic-rescue 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naturalized casual transient ephemeral persistent established spreading invasive-potential invasiveness impact ecological-impact economic-impact social-impact environmental-impact negative-impact positive-impact beneficial detrimental nuisance pest weed pathogen disease-vector public-health veterinary-health crop-health forest-health rangeland-health ecosystem-health One-Health planetary-health ecohealth conservation-medicine disease-ecology parasitology entomology medical-entomology veterinary-entomology agricultural-entomology forest-entomology urban-entomology aquatic-entomology systematics taxonomy phylogenetics evolutionary-biology population-biology ecosystem-ecology landscape-ecology global-ecology macroecology biogeography historical-biogeography ecological-biogeography island-biogeography continental-biogeography latitudinal-gradient altitudinal-gradient species-area-relationship island-species-richness equilibrium-theory nonequilibrium-theory neutral-theory niche-theory assembly-rules priority-effects mass-effects species-sorting competition predation herbivory parasitism mutualism commensalism amensalism facilitation inhibition tolerance succession primary-succession secondary-succession disturbance recovery resilience resistance stability persistence turnover replacement extinction immigration emigration birth death reproduction survival growth development metamorphosis complete-metamorphosis holometabolous hemimetabolous ametabolous egg larva pupa adult instar ecdysis molting diapause quiescence aestivation hibernation overwintering overwintering-stage overwintering-site overwintering-strategy cold-hardiness freeze-tolerance freeze-avoidance supercooling cryoprotectants thermal-biology thermoregulation ectothermy poikilothermy behavioral-thermoregulation microhabitat-selection basking shading stilting perching roosting sheltering burrowing mining gall-formation leaf-rolling leaf-tying silk-production web-spinning nest-construction 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ecological-selection stabilizing-selection directional-selection disruptive-selection balancing-selection frequency-dependent-selection negative-frequency-dependent-selection positive-frequency-dependent-selection apostatic-selection antiapostatic-selection rare-type-advantage common-type-disadvantage heterozygote-advantage heterosis hybrid-vigor inbreeding-depression outbreeding-depression genetic-load mutational-load segregational-load substitutional-load drift-load migration-load mutation recombination chromosomal-rearrangement genome-evolution transposable-elements horizontal-gene-transfer endosymbiosis symbiogenesis holobiont hologenome extended-evolutionary-synthesis niche-construction-theory ecological-evolutionary-developmental-biology eco-evo-devo developmental-plasticity reaction-norm genotype-environment-interaction GxE norm-of-reaction plasticity canalization genetic-assimilation genetic-accommodation cryptic-genetic-variation evolutionary-capacitance evolvability robustness modularity integration correlation constraint trade-off pleiotropy epistasis additive-genetic-variance dominance-variance epistatic-variance genetic-variance phenotypic-variance environmental-variance heritability narrow-sense-heritability broad-sense-heritability response-to-selection breeder's-equation quantitative-genetics molecular-genetics genomics transcriptomics proteomics metabolomics phenomics ecogenomics conservation-genomics functional-genomics structural-genomics comparative-genomics evolutionary-genomics phylogenomics metagenomics microbiome virome mycobiome bacteriome archaeome eukaryome extended-genotype keystone-species ecosystem-engineer foundation-species dominant-species subordinate-species transient-species satellite-species core-species peripheral-species edge-species interior-species habitat-generalist habitat-specialist edge-habitat interior-habitat matrix-habitat corridor stepping-stone source-habitat sink-habitat patch fragment landscape seascape riverscape skyscape soundscape smellscape tastes touch vision olfaction gustation mechanoreception thermoreception photoreception chemoreception electroreception magnetoreception proprioception nociception sensory-ecology sensory-biology neuroethology behavioral-ecology cognitive-ecology evolutionary-ecology ecological-immunology ecoimmunology epidemiology parasite-ecology host-parasite-interactions host-pathogen-interactions host-symbiont-interactions microbial-ecology virology bacteriology mycology protistology helminthology entomopathology microbial-control viral-control fungal-control bacterial-control nematode-control parasitoid-control predator-control herbivore-control competitor-control autocidal-control sterile-insect-technique incompatible-insect-technique gene-drive RNA-interference CRISPR genetic-biocontrol precision-guided-sterile-insect-technique self-limiting-genetic-control self-sustaining-genetic-control population-suppression population-replacement population-elimination area-wide-integrated-pest-management sterile-insect-release inundative-release inoculative-release neoclassical-biological-control augmentation-biological-control habitat-manipulation cultural-control physical-control mechanical-control chemical-control pesticide-resistance-management insecticide-resistance-management herbicide-resistance-management fungicide-resistance-management antibiotic-resistance-management resistance-evolution resistance-management refuge-strategy high-dose-strategy pyramid-strategy rotation-strategy mixture-strategy mosaic-strategy integrated-resistance-management integrated-weed-management integrated-crop-management integrated-forest-management integrated-vector-management integrated-disease-management One-Health-approach ecohealth-approach planetary-health-approach sustainable-intensification agroecology organic-agriculture conservation-agriculture climate-smart-agriculture precision-agriculture digital-agriculture smart-farming 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NAFTA USMCA TPP CPTPP RCEP bilateral-investment-treaties free-trade-agreements regional-trade-agreements multilateral-environmental-agreements bilateral-environmental-agreements strategic-environmental-assessment cumulative-impact-assessment social-impact-assessment health-impact-assessment gender-impact-assessment human-rights-impact-assessment indigenous-rights-impact-assessment cultural-heritage-impact-assessment landscape-and-visual-impact-assessment noise-impact-assessment air-quality-impact-assessment water-quality-impact-assessment soil-quality-impact-assessment biodiversity-impact-assessment ecosystem-services-impact-assessment climate-impact-assessment carbon-footprint-assessment water-footprint-assessment land-footprint-assessment material-footprint-assessment ecological-footprint-assessment planetary-footprint-assessment life-cycle-assessment life-cycle-costing social-life-cycle-assessment life-cycle-sustainability-assessment material-flow-analysis substance-flow-analysis energy-flow-analysis nutrient-flow-analysis water-flow-analysis carbon-flow-analysis nitrogen-flow-analysis phosphorus-flow-analysis circular-material-flow industrial-ecology industrial-symbiosis eco-industrial-park urban-metabolism industrial-metabolism socio-economic-metabolism social-metabolism political-ecology political-economy ecological-economics environmental-economics natural-resource-economics resource-economics energy-economics agricultural-economics forest-economics fisheries-economics water-economics biodiversity-economics ecosystem-services-economics conservation-economics restoration-economics environmental-valuation contingent-valuation choice-experiment benefit-transfer hedonic-pricing travel-cost-method production-function-approach replacement-cost-method damage-cost-avoided-method opportunity-cost-method net-present-value internal-rate-of-return benefit-cost-ratio cost-effectiveness-analysis multi-criteria-decision-analysis analytic-hierarchy-process 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ternary-relation n-ary-relation complete-relation incomplete-relation transitive-relation intransitive-relation reflexive-relation irreflexive-relation symmetric-relation asymmetric-relation antisymmetric-relation equivalence-relation partial-order total-order strict-order weak-order semiorder interval-order Pareto-order lexicographic-order dominance-relation outranking-relation concordance discordance credibility discrimination-threshold indifference-threshold preference-threshold veto-threshold majority-rule Condorcet-winner Condorcet-loser Borda-count approval-voting range-voting score-voting instant-runoff-voting single-transferable-vote proportional-representation mixed-member-proportional additional-member-system parallel-voting majority-bonus-system scorporo double-vote alternative-vote supplementary-vote contingent-vote Bucklin-voting Coombs'-method Dodgson's-method Kemeny-Young-method Ranked-pairs Schulze-method Minimax-Condorcet Smith-set Schwartz-set uncovered-set Banks-set top-cycle minimal-covering-set bipartisan-set essential-set tournament-equilibrium-set minimal-extending-set Pareto-set deep-uncovered-set minimal-upward-covering-set minimal-downward-covering-set minimal-covering-set-with-respect-to-pairs minimal-covering-set-with-respect-to-triplets minimal-stable-set minimal-retentive-set minimal-comprehensive-retentive-set minimal-extensive-retentive-set minimal-weakly-stable-set minimal-strongly-stable-set minimal-collectively-stable-set minimal-individually-stable-set minimal-Nash-stable-set minimal-individually-rational-set minimal-Pareto-optimal-set minimal-weakly-Pareto-optimal-set minimal-strongly-Pareto-optimal-set minimal-collectively-Pareto-optimal-set minimal-individually-Pareto-optimal-set minimal-Nash-Pareto-optimal-set minimal-individually-rational-Pareto-optimal-set minimal-comprehensive-Pareto-optimal-set minimal-extensive-Pareto-optimal-set minimal-weakly-comprehensive-Pareto-optimal-set 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minimal-individually-stable-Pareto-optimal-set minimal-Nash-stable-Pareto-optimal-set minimal-individually-rational-stable-Pareto-optimal-set minimal-weakly-Nash-stable-Pareto-optimal-set minimal-strongly-Nash-stable-Pareto-optimal-set minimal-collectively-Nash-stable-Pareto-optimal-set minimal-individually-Nash-stable-Pareto-optimal-set minimal-Nash-Nash-stable-Pareto-optimal-set minimal-individually-rational-Nash-stable-Pareto-optimal-set minimal-weakly-individually-rational-Pareto-optimal-set minimal-strongly-individually-rational-Pareto-optimal-set minimal-collectively-individually-rational-Pareto-optimal-set minimal-individually-individually-rational-Pareto-optimal-set minimal-Nash-individually-rational-Pareto-optimal-set minimal-individually-rational-individually-rational-Pareto-optimal-set minimal-weakly-Pareto-optimal-Nash-stable-set minimal-strongly-Pareto-optimal-Nash-stable-set minimal-collectively-Pareto-optimal-Nash-stable-set minimal-individually-Pareto-optimal-Nash-stable-set minimal-Nash-Pareto-optimal-Nash-stable-set minimal-individually-rational-Pareto-optimal-Nash-stable-set minimal-weakly-comprehensive-Pareto-optimal-Nash-stable-set minimal-strongly-comprehensive-Pareto-optimal-Nash-stable-set minimal-collectively-comprehensive-Pareto-optimal-Nash-stable-set minimal-individually-comprehensive-Pareto-optimal-Nash-stable-set minimal-Nash-comprehensive-Pareto-optimal-Nash-stable-set minimal-individually-rational-comprehensive-Pareto-optimal-Nash-stable-set minimal-weakly-extensive-Pareto-optimal-Nash-stable-set minimal-strongly-extensive-Pareto-optimal-Nash-stable-set minimal-collectively-extensive-Pareto-optimal-Nash-stable-set minimal-individually-extensive-Pareto-optimal-Nash-stable-set minimal-Nash-extensive-Pareto-optimal-Nash-stable-set minimal-individually-rational-extensive-Pareto-optimal-Nash-stable-set minimal-weakly-retentive-Pareto-optimal-Nash-stable-set 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minimal-individually-rational-Nash-stable-Pareto-optimal-Nash-stable-set minimal-weakly-individually-rational-Pareto-optimal-Nash-stable-set minimal-strongly-individually-rational-Pareto-optimal-Nash-stable-set minimal-collectively-individually-rational-Pareto-optimal-Nash-stable-set minimal-individually-individually-rational-Pareto-optimal-Nash-stable-set minimal-Nash-individually-rational-Pareto-optimal-Nash-stable-set minimal-individually-rational-individually-rational-Pareto-optimal-Nash-stable-set minimal-weakly-Pareto-optimal-individually-rational-Nash-stable-set minimal-strongly-Pareto-optimal-individually-rational-Nash-stable-set minimal-collectively-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-Pareto-optimal-individually-rational-Nash-stable-set minimal-Nash-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-rational-Pareto-optimal-individually-rational-Nash-stable-set 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minimal-individually-rational-extensive-Pareto-optimal-individually-rational-Nash-stable-set minimal-weakly-retentive-Pareto-optimal-individually-rational-Nash-stable-set minimal-strongly-retentive-Pareto-optimal-individually-rational-Nash-stable-set minimal-collectively-retentive-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-retentive-Pareto-optimal-individually-rational-Nash-stable-set minimal-Nash-retentive-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-rational-retentive-Pareto-optimal-individually-rational-Nash-stable-set minimal-weakly-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-strongly-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-collectively-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-rational-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-weakly-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-strongly-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-collectively-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-Nash-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-rational-Nash-stable-Pareto-optimal-individually-rational-Nash-stable-set minimal-weakly-individually-rational-Pareto-optimal-individually-rational-Nash-stable-set minimal-strongly-individually-rational-Pareto-optimal-individually-rational-Nash-stable-set minimal-collectively-individually-rational-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-individually-rational-Pareto-optimal-individually-rational-Nash-stable-set minimal-Nash-individually-rational-Pareto-optimal-individually-rational-Nash-stable-set minimal-individually-rational-individually-rational-Pareto-optimal-individually-rational-Nash-stable-set
Gerris buenoi
water strider
Gerris buenoi is a small water strider species native to North America, first described in 1911. Adults measure 8-10 mm in length and possess elongated mid-legs adapted for locomotion on water surfaces. The species exhibits wing polymorphism, with multiple wing forms corresponding to different seasons and environmental conditions. It has been extensively studied as a model organism for sexual conflict research and was the first water strider to have its genome sequenced.
water-strider aquatic-insect model-organism sexual-conflict genome-sequenced North-America freshwater predator hemimetabolous wing-polymorphism
Gryllinae
Field Crickets
Gryllinae, commonly known as field crickets, is a subfamily of true crickets in the family Gryllidae. These insects are characterized by their ability to produce sound through stridulation of the forewings, with males generating species-specific calling songs to attract females. Field crickets exhibit hemimetabolous development, with nymphs undergoing multiple molts before reaching adulthood. The subfamily includes numerous genera distributed worldwide, with many species serving as important model organisms in studies of behavioral ecology, neurophysiology, and evolutionary biology.
Orthoptera Gryllidae field-crickets stridulation acoustic-communication model-organism hemimetabolous omnivore soil-oviposition phonotaxis
Isonychia intermedia
Isonychia intermedia is a species of mayfly in the family Isonychiidae. Like other members of its genus, it is an aquatic insect with a life cycle consisting of an extended nymphal stage in freshwater habitats followed by a brief adult stage. The species is found in North America and is part of the EPT (Ephemeroptera-Plecoptera-Trichoptera) assemblage used in water quality biomonitoring. Adults are known to anglers as 'slate drakes' due to their dark wing coloration.
Ephemeroptera mayfly slate-drake aquatic-insect bioindicator EPT Nearctic freshwater angler-insect Isonychiidae hemimetabolous subimago imago water-quality-indicator North-America
Isoperlinae
Stripetail Stoneflies, Springflies
Isoperlinae is a subfamily of stoneflies in the family Perlodidae, distributed across the Palaearctic and Nearctic regions. Members are commonly known as stripetails or springflies. The subfamily includes approximately 12 genera, with Isoperla being the most speciose and well-known. These stoneflies are aquatic insects whose nymphs inhabit running waters.
stonefly aquatic-insect bioindicator predator lotic Plecoptera Perlodidae stripetail springfly Palaearctic Nearctic stream-ecology fisheries-food-web drumming-communication hemimetabolous montane rheophilic
Mantodea
mantises, mantids, praying mantises
Mantodea is an order of predatory insects comprising over 2,400 species in approximately 430 genera and 15 families, with Mantidae being the largest family. Members are characterized by raptorial forelegs adapted for catching prey, triangular heads with large compound eyes on flexible necks, and elongated bodies. The order exhibits two primary foraging strategies: ambush predation (the ancestral condition) and cursorial pursuit of prey. Mantodea has undergone significant taxonomic revision, having been elevated from a suborder of Orthoptera to full order status, then subsequently grouped with cockroaches and termites within Dictyoptera based on molecular phylogenetic evidence.
carnivorous predatory raptorial-forelegs cursorial ambush-predator Dictyoptera hemimetabolous ootheca sexual-cannibalism climate-sensitive
Nepomorpha
true water bugs, water bugs
Nepomorpha is an infraorder of aquatic true bugs (Hemiptera: Heteroptera) comprising approximately 2,000 species worldwide. Members are characterized by reduced, weakly muscled antennae typically concealed against the head, and absent or vestigial ocelli. Most species inhabit freshwater environments, with the exception of the superfamily Ochteroidea, which occupies riparian zones along water margins. The group includes diverse forms such as giant water bugs, water scorpions, water boatmen, and backswimmers.
aquatic-insects freshwater predatory bioindicator Hemiptera Heteroptera true-bugs water-bugs hemimetabolous
Nysius raphanus
False Chinch Bug
Nysius raphanus, commonly known as the false chinch bug, is a small North American seed bug in the family Lygaeidae. Adults measure no more than 1/8 inch (approximately 3 mm) in length. The species undergoes hemimetabolous development with multiple nymphal stages rather than a larval stage; nymphs resemble wingless adults. While recognized as the most serious pest among Nysius species, reports of heavy infestations causing significant crop damage are uncommon. Populations can reach outbreak levels under dry conditions.
agricultural-pest seed-bug canola-pest hemimetabolous North-American-native
Paralabella curvicauda
Curve-tailed earwig
Paralabella curvicauda is a species of earwig in the family Spongiphoridae, characterized by its distinctive curved forceps (cerci) that give the species its name. The species has a broad distribution across the Neotropics, with extensive records throughout Brazil and presence in Africa, Australia, the Caribbean, and Middle America. Like other earwigs, it possesses the typical forceps-like cerci at the abdomen tip and exhibits hemimetabolous development.
earwig Dermaptera Spongiphoridae Neotropical Brazil forceps cerci hemimetabolous broad-distribution synonym-Paralabellula-curvicauda
Pentatomoidea
stink bugs, shield bugs, jewel bugs, giant shield bugs, burrower bugs
Pentatomoidea is a superfamily of true bugs (Hemiptera: Heteroptera) comprising approximately 7,000 species across 21 families (16 extant, 5 extinct). Members are characterized by a prominent scutellum, five-segmented antennae, and tarsi with two or three segments. The group includes economically significant agricultural pests such as the brown marmorated stink bug, as well as predatory species that serve as biological control agents.
agricultural-pest invasive-species biological-control defensive-secretion hemimetabolous
Prosapia
froghoppers, spittlebugs
Prosapia is a genus of froghoppers (family Ischnorhinidae) comprising approximately six described species distributed across North and Central America, including the Caribbean. These insects are commonly known as spittlebugs due to the protective foamy masses produced by nymphs. Several species are significant agricultural pests of forage grasses, turfgrasses, and sugarcane, causing economic damage through xylem feeding that induces water stress, tissue death, and reduced forage quality. The genus includes the invasive two-lined spittlebug (P. bicincta), which established in Hawaiʻi in 2016 and has since damaged thousands of hectares of cattle pastures.
spittlebug froghopper pasture-pest turfgrass-pest invasive-species Hawaiʻi cattle-ranching xylem-feeder hemimetabolous Wolbachia integrated-pest-management forage-grass kikuyu-grass Bermuda-grass Brachiaria sugarcane-pest Cercopidae Ischnorhinidae economic-entomology tropical-agriculture
Spissistilus festinus
threecornered alfalfa hopper, three-cornered alfalfa hopper
Spissistilus festinus is a treehopper species in the family Membracidae, commonly known as the threecornered alfalfa hopper. It is a significant agricultural pest of leguminous crops, particularly alfalfa, soybeans, and peanuts, causing damage through stem girdling. The species has gained additional economic importance as the confirmed vector of Grapevine red blotch virus (GRBV), a pathogen threatening North American viticulture. Two distinct genetic lineages exist in the United States—Southeastern and Californian—with documented differences in viral transmission efficiency. The species exhibits a hemimetabolous life cycle with temperature-dependent development rates and uses substrate-borne vibrational signals in mating communication.
agricultural-pest virus-vector treehopper phloem-feeder legume-pest viticulture-threat GRBV hemimetabolous vibrational-communication stem-girdler
Stictocephala stimulea
Stictocephala stimulea is a treehopper species in the family Membracidae, first described by Van Duzee in 1914. Treehoppers in this genus are characterized by their enlarged, often ornate pronotum that extends over the body like a helmet or thorn. The specific epithet 'stimulea' suggests possible resemblance to or association with stinging organisms, though this refers to appearance rather than actual sting. Like other membracids, this species likely feeds on plant phloem sap using piercing-sucking mouthparts.
Membracidae treehopper Auchenorrhyncha Cicadomorpha Stictocephala Ceresini Smiliinae Hemiptera sap-feeder pronotum helmet thorn-mimicry plant-feeding-insect phloem-feeder cryptic-coloration camouflage Van-Duzee-1914 Nearctic North-America Florida North-Carolina South-Dakota understudied-species data-deficient taxonomy entomology insect arthropod true-bug auchenorrhynchan cicadomorph leafhopper-relative plant-hopper ornate-pronotum pronotal-extension dorsal-helmet insect-morphology insect-systematics biodiversity natural-history conservation insect-ecology insect-behavior insect-development insect-distribution biogeography species-description type-specimen original-description historical-taxonomy museum-specimen collection-record occurrence-data GBIF iNaturalist citizen-science observation-record range-map distribution-data geographic-range endemic native-species regional-fauna local-biodiversity habitat-specificity host-plant feeding-guild phytophagous herbivore plant-insect-interaction coevolution mimicry defense crypsis evolutionary-adaptation morphological-adaptation exoskeleton-modification structural-coloration insect-identification field-guide diagnostic-character taxonomic-key species-complex cryptic-species morphological-variation geographic-variation phenotypic-plasticity life-history reproduction oviposition nymph instar metamorphosis hemimetabolous incomplete-metamorphosis population-dynamics community-ecology food-web trophic-level primary-consumer ecosystem-function nutrient-cycling energy-flow biological-control pest-status agricultural-relevance forestry urban-ecology invasive-potential climate-change habitat-loss conservation-status data-gap research-need taxonomic-revision phylogenetics molecular-systematics DNA-barcoding integrative-taxonomy natural-history-collection specimen-digitization open-data FAIR-data biodiversity-informatics biological-database taxonomic-authority nomenclature zoological-nomenclature International-Code-of-Zoological-Nomenclature type-locality type-specimen-deposition author-citation original-combination current-combination synonymy homonymy nomenclatural-act taxonomic-history classification-system phylogenetic-classification evolutionary-relationships monophyly clade lineage stem-group crown-group divergence-time molecular-clock fossil-record paleontology extant extinct living-fossil evolutionary-history biogeographic-history dispersal vicariance range-expansion range-contraction refugium glacial-relict postglacial-colonization anthropogenic-impact human-disturbance land-use-change urbanization agricultural-intensification pesticide-use habitat-fragmentation connectivity corridor protected-area conservation-planning systematic-conservation-planning priority-area hotspot endemic-area center-of-origin center-of-diversity evolutionary-significant-unit management-unit population metapopulation source-sink-dynamics demography vital-rates survival fecundity generation-time population-growth-rate carrying-capacity density-dependence regulation limiting-factor environmental-stochasticity demographic-stochasticity genetic-stochasticity inbreeding-depression outbreeding-depression genetic-diversity heterozygosity allelic-richness effective-population-size genetic-drift gene-flow migration isolation-by-distance isolation-by-resistance landscape-genetics population-genomics phylogeography historical-demography coalescent-theory approximate-Bayesian-computation species-distribution-model ecological-niche-model habitat-suitability bioclimatic-envelope climate-envelope niche-conservatism niche-evolution realized-niche fundamental-niche biotic-interaction competition predation parasitism mutualism commensalism amensalism facilitation apparent-competition indirect-interaction trophic-cascade top-down-control bottom-up-control mesopredator-release keystone-species ecosystem-engineer foundation-species dominant-species characteristic-species indicator-species umbrella-species flagship-species surrogate-species focal-species target-species pest-species invasive-species naturalized-species alien-species non-native-species introduced-species cryptogenic-species range-shift poleward-shift elevational-shift phenological-shift temporal-mismatch trophic-mismatch phenology seasonality voltinism univoltine bivoltine multivoltine partial-generation prolonged-diapause aestivation hibernation overwintering overwintering-strategy cold-hardiness freeze-tolerance freeze-avoidance supercooling cryoprotectant thermal-biology thermoregulation behavioral-thermoregulation microclimate-selection habitat-selection oviposition-site-selection host-selection mate-choice sexual-selection sperm-competition cryptic-female-choice reproductive-isolation prezygotic-isolation postzygotic-isolation speciation allopatric-speciation sympatric-speciation parapatric-speciation peripatric-speciation reinforcement hybridization introgression hybrid-zone cline ecotone contact-zone secondary-contact exogenous-selection endogenous-selection ecological-speciation mutation-order-speciation sexual-conflict sexual-dimorphism sexual-size-dimorphism sexual-dichromatism polymorphism color-polymorphism morph phase gregarious-phase solitary-phase density-dependent-polyphenism reaction-norm genotype-environment-interaction plasticity canalization genetic-assimilation acclimation acclimatization hardening stress-response heat-shock-protein oxidative-stress hypoxia desiccation starvation immune-response innate-immunity humoral-immunity cellular-immunity encapsulation nodulation phagocytosis melanization antimicrobial-peptide phenoloxidase prophenoloxidase lysozyme defensin cecropin diptericin attacin immune-gene immune-pathway Toll-pathway Imd-pathway JAK-STAT-pathway NF-κB relish dorsal immune-memory specific-immunity transgenerational-immune-priming gut-microbiome symbiosis obligate-symbiont facultative-symbiont primary-symbiont secondary-symbiont vertical-transmission horizontal-transmission mixed-mode-transmission nutritional-symbiosis defensive-symbiosis digestive-symbiosis detoxification metabolism biosynthesis vitamin-synthesis amino-acid-synthesis steroid-synthesis cuticle-synthesis chitin-synthesis molting ecdysis ecdysteroid juvenile-hormone insulin-signaling TOR-signaling nutrient-sensing energy-storage lipid-metabolism carbohydrate-metabolism protein-metabolism flight-metabolism respiration tracheal-system spiracle gas-exchange water-balance osmoregulation excretion Malpighian-tubule hindgut rectum cryptonephridial-system ion-transport water-reabsorption nitrogenous-waste uric-acid urea ammonia detoxification-enzyme cytochrome-P450 glutathione-S-transferase carboxylesterase mixed-function-oxidase resistance insecticide-resistance acaricide-resistance herbicide-resistance antibiotic-resistance resistance-management resistance-evolution resistance-mechanism target-site-resistance metabolic-resistance behavioral-resistance cuticular-resistance resistance-allele resistance-gene fitness-cost fitness-benefit pleiotropy trade-off life-history-trade-off allocation resource-allocation energy-allocation time-allocation foraging optimal-foraging central-place-foraging patch-use marginal-value-theorem predator-avoidance antipredator-defense masquerade Batesian-mimicry Müllerian-mimicry automimicry intraspecific-mimicry intersexual-mimicry aggressive-mimicry social-parasitism brood-parasitism kleptoparasitism defense-behavior thanatosis death-feigning startle-display deimatic-display eyespot deflection-mark autotomy reflex-bleeding regurgitation defensive-secretion venom toxin allomone kairomone synomone semiochemical pheromone sex-pheromone aggregation-pheromone alarm-pheromone trail-pheromone territorial-pheromone recognition-pheromone signature-mixture cuticular-hydrocarbon volatile-organic-compound olfaction gustation mechanoreception thermoreception hygroreception photoreception vision compound-eye ommatidium rhabdom visual-pigment opsin color-vision polarization-vision motion-detection optomotor-response phototaxis photoperiodism circadian-rhythm biological-clock entrainment zeitgeber circannual-rhythm photoperiod day-length critical-day-length critical-photoperiod diapause-induction diapause-termination diapause-maintenance diapause-development endocrine-control neuroendocrine corpus-allatum corpus-cardiacum prothoracic-gland ecdysiotropin ecdysiostatin allatostatin allatotropin neuropeptide hormone hormone-receptor signal-transduction gene-expression transcription-factor regulatory-gene structural-gene gene-network gene-regulatory-network developmental-gene Hox-gene homeobox segment-polarity-gene gap-gene pair-rule-gene maternal-effect-gene zygotic-gene embryonic-development embryogenesis cleavage blastoderm gastrulation segmentation tagmosis appendage-development imaginal-disc holometabolous complete-metamorphosis larva pupa adult apolysis teneral sclerotization tanning cuticle exoskeleton epicuticle procuticle exocuticle endocuticle resilin sclerotin chitin protein lipid wax cement-layer wax-layer surface-lipid waterproofing anti-wetting anti-fouling self-cleaning structural-color pigmentary-color ommin pteridine carotenoid melanin papiliochrome flavonoid anthocyanin betalain iridescence photonic-crystal diffraction-grating thin-film-interference multilayer-reflector scattering Tyndall-scattering Rayleigh-scattering Mie-scattering non-iridescent-structural-color biochrome biofluorescence bioluminescence luciferin luciferase photoprotein bioluminescent-system counter-illumination burglar-alarm lure communication mate-recognition predator-deterrence aposematism warning-coloration honest-signal dishonest-signal signal-evolution signal-design receiver-psychology sensory-bias sensory-exploitation sensory-trap amplifier attenuator signal-efficacy signal-honesty handicap-principle index-signal conventional-signal assessment-signal territorial-signal dominance-signal submissive-signal aggressive-signal courtship-signal copulatory-signal postcopulatory-signal antagonistic-coevolution chase-away-selection sensory-drive reproductive-character-displacement genetic-exchange admixture hybrid-fitness hybrid-breakdown hybrid-vigor heterosis genetic-load mutational-meltdown founder-effect bottleneck population-expansion invasion-genetics propagule-pressure introduction-effort establishment spread lag-phase exponential-growth logistic-growth Allee-effect demographic-Allee-effect component-Allee-effect strong-Allee-effect weak-Allee-effect critical-population-size minimum-viable-population extinction-risk population-viability-analysis stochastic-model deterministic-model individual-based-model agent-based-model spatially-explicit-model metapopulation-model source-sink-model integrated-population-model state-space-model hierarchical-model Bayesian-model machine-learning artificial-intelligence computer-vision image-recognition automated-identification deep-learning neural-network convolutional-neural-network transfer-learning data-augmentation training-set validation-set test-set accuracy precision recall F1-score confusion-matrix receiver-operating-characteristic area-under-curve model-selection model-validation cross-validation bootstrapping permutation-test null-model randomization-test Monte-Carlo-simulation Markov-chain-Monte-Carlo Gibbs-sampling Metropolis-Hastings-algorithm Bayesian-inference prior-distribution posterior-distribution likelihood-function evidence model-comparison Bayes-factor information-criterion Akaike-information-criterion corrected-AIC Bayesian-information-criterion deviance-information-criterion Watanabe-Akaike-information-criterion cross-validation-information-criterion stacking model-averaging ensemble-model prediction forecasting scenario-analysis sensitivity-analysis uncertainty-analysis propagation-of-uncertainty error-budget confidence-interval credible-interval prediction-interval tolerance-interval statistical-power sample-size effect-size significance-test hypothesis-testing null-hypothesis alternative-hypothesis type-I-error type-II-error false-positive false-negative multiple-comparison Bonferroni-correction false-discovery-rate q-value p-value significance-level alpha-level beta-level statistical-test parametric-test nonparametric-test robust-test exact-test asymptotic-test bootstrap-test jackknife resampling subsampling leave-one-out k-fold stratified-sampling balanced-sampling imbalanced-data class-imbalance oversampling undersampling synthetic-minority-oversampling SMOTE ADASYN cost-sensitive-learning ensemble-method bagging boosting random-forest gradient-boosting XGBoost LightGBM CatBoost support-vector-machine kernel-method radial-basis-function polynomial-kernel linear-kernel sigmoid-kernel decision-tree classification-tree regression-tree pruning cost-complexity-pruning minimum-description-length rule-based-classifier association-rule frequent-pattern apriori-algorithm FP-growth sequential-pattern temporal-pattern spatial-pattern spatiotemporal-pattern time-series-analysis trend-analysis seasonal-decomposition autoregressive-model moving-average-model ARIMA SARIMA exponential-smoothing state-space-model Kalman-filter particle-filter hidden-Markov-model dynamic-Bayesian-network recurrent-neural-network long-short-term-memory gated-recurrent-unit transformer attention-mechanism self-attention multi-head-attention encoder decoder encoder-decoder-architecture sequence-to-sequence-model generative-model generative-adversarial-network variational-autoencoder normalizing-flow diffusion-model energy-based-model Boltzmann-machine restricted-Boltzmann-machine deep-belief-network autoencoder denoising-autoencoder sparse-autoencoder contractive-autoencoder variational-inference expectation-maximization maximum-likelihood maximum-a-posteriori maximum-entropy Occam's-razor parsimony model-complexity overfitting underfitting bias-variance-tradeoff regularization L1-regularization L2-regularization elastic-net dropout early-stopping batch-normalization layer-normalization group-normalization instance-normalization weight-decay mixup cutout cutmix random-erasing autoaugment fast-autoaugment population-based-augmentation neural-architecture-search automated-machine-learning hyperparameter-optimization grid-search random-search Bayesian-optimization sequential-model-based-optimization multi-fidelity-optimization knowledge-distillation teacher-student-model model-compression quantization knowledge-transfer domain-adaptation few-shot-learning zero-shot-learning one-shot-learning meta-learning learning-to-learn metric-learning siamese-network triplet-loss contrastive-learning self-supervised-learning unsupervised-learning semi-supervised-learning weakly-supervised-learning active-learning online-learning incremental-learning continual-learning lifelong-learning curriculum-learning multi-task-learning multi-modal-learning cross-modal-learning representation-learning feature-learning embedding-learning manifold-learning dimensionality-reduction principal-component-analysis t-SNE UMAP word-embedding sentence-embedding document-embedding knowledge-graph-embedding graph-neural-network graph-convolutional-network graph-attention-network message-passing-neural-network relational-graph-convolutional-network inductive-learning transductive-learning homophily heterophily graph-isomorphism Weisfeiler-Lehman-test subgraph-isomorphism graph-matching network-alignment network-embedding node-embedding edge-embedding graph-classification node-classification link-prediction graph-generation graph-synthesis molecular-generation de-novo-design inverse-design retrosynthesis reaction-prediction property-prediction quantitative-structure-activity-relationship QSAR quantitative-structure-property-relationship QSPR molecular-descriptor fingerprint Morgan-fingerprint extended-connectivity-fingerprint circular-fingerprint atom-pair-fingerprint topological-torsion-fingerprint pharmacophore shape-similarity electrostatic-similarity docking scoring-function binding-affinity-prediction protein-ligand-interaction protein-protein-interaction protein-structure-prediction AlphaFold protein-folding contact-prediction distance-prediction angle-prediction torsion-prediction secondary-structure-prediction tertiary-structure-prediction quaternary-structure-prediction protein-design protein-engineering directed-evolution rational-design computational-design de-novo-protein-design enzyme-design catalytic-antibody ribozyme aptamer DNAzyme synthetic-biology genetic-circuit metabolic-engineering metabolic-flux-analysis flux-balance-analysis genome-scale-metabolic-model dynamic-metabolic-model kinetic-modeling stoichiometric-modeling constraint-based-modeling optimization linear-programming mixed-integer-linear-programming quadratic-programming nonlinear-programming dynamic-programming stochastic-programming robust-optimization multi-objective-optimization Pareto-optimality evolutionary-algorithm genetic-algorithm genetic-programming differential-evolution particle-swarm-optimization ant-colony-optimization simulated-annealing tabu-search variable-neighborhood-search iterated-local-search greedy-randomized-adaptive-search scatter-search path-relinking memetic-algorithm hyper-heuristic metaheuristic local-search neighborhood-search hill-climbing random-walk randomized-search Monte-Carlo-tree-search upper-confidence-bound Thompson-sampling multi-armed-bandit contextual-bandit reinforcement-learning policy-gradient actor-critic Q-learning deep-Q-network policy-iteration value-iteration temporal-difference-learning SARSA expected-SARSA double-Q-learning dueling-Q-network prioritized-experience-replay distributed-reinforcement-learning impala A3C asynchronous-advantage-actor-critic PPO proximal-policy-optimization TRPO trust-region-policy-optimization DDPG deep-deterministic-policy-gradient TD3 twin-delayed-deep-deterministic-policy-gradient SAC soft-actor-critic model-based-reinforcement-learning model-predictive-control guided-policy-search imitation-learning inverse-reinforcement-learning apprenticeship-learning behavior-cloning dataset-aggregation DAgger generative-adversarial-imitation-learning third-person-imitation-learning one-shot-imitation-learning meta-reinforcement-learning hierarchical-reinforcement-learning option skill subgoal intrinsic-motivation curiosity-driven-exploration empowerment information-gain prediction-error novelty-seeking diversity-seeking multi-agent-reinforcement-learning mean-field fictitious-play correlated-equilibrium Nash-equilibrium game-theory mechanism-design auction-theory incentive-design social-choice-theory voting-theory fair-division matching-theory market-design algorithmic-game-theory computational-social-choice computational-complexity NP-completeness NP-hardness approximation-algorithm approximation-ratio inapproximability fixed-parameter-tractability parameterized-complexity kernelization treewidth graph-minor forbidden-minor-characterization well-quasi-ordering Robertson-Seymour-theorem graph-structure-theorem bidimensionality-theory meta-theorem Courcelle's-theorem automata-theory finite-automaton pushdown-automaton Turing-machine computability decidability halting-problem Rice's-theorem Gödel's-incompleteness-theorems lambda-calculus combinatory-logic type-theory proof-theory model-theory set-theory forcing large-cardinal axiom-of-choice continuum-hypothesis independence-result consistency-strength reverse-mathematics constructive-mathematics intuitionistic-logic modal-logic temporal-logic epistemic-logic deontic-logic description-logic ontology knowledge-representation semantic-web linked-data RDF SPARQL OWL knowledge-graph entity-linking relation-extraction event-extraction coreference-resolution named-entity-recognition part-of-speech-tagging dependency-parsing constituency-parsing semantic-parsing natural-language-inference textual-entailment natural-language-generation machine-translation summarization question-answering dialogue-system conversational-AI chatbot virtual-assistant speech-recognition speech-synthesis speaker-recognition emotion-recognition sentiment-analysis opinion-mining aspect-based-sentiment-analysis target-dependent-sentiment-analysis stance-detection rumor-detection fake-news-detection fact-checking claim-verification evidence-retrieval argument-mining persuasion-detection deception-detection personality-prediction mental-health-detection suicide-prevention crisis-intervention social-media-mining network-analysis community-detection influence-maximization information-diffusion cascade-modeling epidemic-modeling SEIR-model SIR-model agent-based-epidemic-model compartmental-model network-epidemic-model metapopulation-epidemic-model spatial-epidemic-model stochastic-epidemic-model branching-process renewal-equation generation-interval serial-interval incubation-period latent-period infectious-period basic-reproduction-number effective-reproduction-number herd-immunity-threshold vaccination-coverage vaccine-efficacy vaccine-effectiveness breakthrough-infection waning-immunity immune-escape variant-of-concern variant-of-interest variant-under-monitoring phylogenetic-analysis molecular-clock-analysis phylodynamics viral-evolution antigenic-drift antigenic-shift zoonotic-spillover reservoir-host intermediate-host amplifying-host dead-end-host vector-borne-disease mosquito-borne-disease tick-borne-disease flea-borne-disease lice-borne-disease midge-borne-disease sandfly-borne-disease tsetse-borne-disease blackfly-borne-disease triatomine-borne-disease kissing-bug Chagas-disease trypanosomiasis leishmaniasis malaria dengue yellow-fever Zika-virus chikungunya West-Nile-virus Japanese-encephalitis tick-borne-encephalitis Lyme-disease Rocky-Mountain-spotted-fever ehlichiosis anaplasmosis babesiosis tularemia plague murine-typhus epidemic-typhus endemic-typhus scrub-typhus Q-fever trench-fever bartonellosis cat-scratch-disease rat-bite-fever leptospirosis brucellosis anthrax melioidosis glanders tularaemia francisellosis coxiellosis rickettsiosis orientia-infection ehrlichiosis neoehrlichiosis neorickettsiosis anaplasmataceae rickettsiaceae coxiellaceae bartonellaceae brucellaceae francisellaceae pasteurellaceae legionellaceae chlamydiaceae mycoplasmataceae ureaplasmataceae spiroplasmataceae achaenoplasmataceae entomoplasmataceae haloplasmataceae tenericutes mollicutes bacteroidetes fusobacteria spirochaetes synergistetes deferribacteres thermotogae aquificae caldiserica caldithrix deferrisoma desulfurobacterium thermovibrio thermocrinis hydrogenobacter sulfurihydrogenibium persephonella hydrogenobaculum hydrothermus thermothrix sulfuricurvum sulfurimonas sulfurovum thiovulum thiomicrospira pseudomonas vibrio aeromonas photobacterium aliivibrio gracilibacillus halobacillus halomonas chromohalobacter cobetia salinicola kushneria halotalea halovibrio salinivibrio thioalkalivibrio thiohalophilus ectothiorhodospira halorhodospira thiorhodospira halochromatium thioflavicoccus marichromatium thiocapsa lamprocystis thiodictyon thiopedia amoebobacter thiocystis chromatium allo-chromatium thermochromatium rhabdochromatium thiobaca thiohalocapsa halocapsa thiolamprovum thioploca thiomargarita beggiatoa methylococcus methylomonas methylomicrobium methylosinus methylocystis methylocella methylocapsa methylacidiphilum verrucomicrobia planctomycetes chlamydiae lentisphaerae kiritimatiellaeota calditrichaeota fervidibacteria
Thesprotia graminis
American grass mantis, grass-like mantis
Thesprotia graminis is a small, cryptic mantid native to the southeastern United States. It exhibits remarkable camouflage resembling pine needles or grass blades, achieved through both coloration and posture. The species is notable as the only member of its genus occurring outside South America. It can reproduce both sexually and parthenogenetically.
cryptic-coloration parthenogenesis sexual-dimorphism wing-dimorphism grass-mimicry pine-needle-mimicry southeastern-US-endemic hemimetabolous ootheca beneficial-insect Thespidae mantodea predatory camouflage-behavior pronotum-elongate single-dorsal-spine-foreleg non-feeding-first-instar pseudo-iteroparous-reproduction semelparous-with-multiple-oothecae tympana-present-(unstudied)sexual-cannibalism-unknown
Timema californicum
California timema
Timema californicum is a sexually dimorphic walkingstick insect endemic to California. Males are smaller than females and possess conspicuous cerci used to grasp females during copulation. The species exhibits hemimetabolous development with gradual morphological changes: hatchlings are phenotypically identical between sexes, juveniles show minor differences, and adults display pronounced sexual dimorphism. Males complete development with one fewer moult than females.
Phasmida Timematidae walkingstick stick-insect California-endemic sexual-dimorphism hemimetabolous X0-sex-determination
Zootermopsis nevadensis
Nevada Dampwood Termite, Nevada Termite
Zootermopsis nevadensis is a eusocial dampwood termite in the family Archotermopsidae, native to the western United States. It is a hemimetabolous species with complex caste differentiation including workers, soldiers, alates, and neotenic reproductives. The species has been extensively studied for its genomic characteristics, including exceptionally high DNA methylation levels and reduced opsin genes associated with its subterranean lifestyle. Two subspecies are recognized: Z. n. nevadensis and Z. n. nuttingi, with the latter having its genome sequenced.
termite dampwood-termite eusocial hemimetabolous wood-feeder protist-symbiosis vibrational-communication DNA-methylation western-USA California Nevada Zootermopsis Archotermopsidae lower-termite caste-differentiation neotenic-reproduction genome-sequenced opsin-reduction chemoreceptor-expansion
Zootermopsis nevadensis nevadensis
damp-wood termite, Nevada dampwood termite
Zootermopsis nevadensis nevadensis is a lower termite subspecies inhabiting cooler coastal and higher elevation areas of the western United States. It lives entirely within damp wood and does not forage outside its gallery system. The species exhibits hemimetabolous development with multiple progressive juvenile instars that function as workers. These workers retain developmental plasticity, capable of differentiating into alates (winged reproductives), neotenic reproductives, or soldiers depending on colony needs. The subspecies possesses exceptionally high levels of DNA methylation compared to other insects, with methylation patterns more similar to non-insect invertebrates than to holometabolous insects.
termite lower-termite damp-wood-termite eusocial hemimetabolous DNA-methylation vibrational-communication protist-symbiosis wood-decomposition