Cold-adapted
Guides
Allocapnia maria
Two-knobbed Snowfly
Allocapnia maria, the two-knobbed snowfly, is a small winter stonefly in the family Capniidae. The species was described by Hanson in 1942 and occurs in eastern North America. Like other winter stoneflies, it is active during cold months when most other insects are dormant.
Allocapnia nivicola
brook snowfly
Allocapnia nivicola is a small winter stonefly in the family Capniidae, commonly known as the brook snowfly. It is native to North America and has been documented across the eastern and midwestern United States. As a member of the winter stonefly group, it is active during cold months when most other insects are dormant. The species is one of approximately 40 described species in the genus Allocapnia.
Amara alpina
Amara alpina is an arctic-alpine ground beetle in the family Carabidae, first described by Gustaf von Paykull in 1790. It inhabits cold regions at high altitudes and high latitudes across the Holarctic, with populations in Scandinavia, Siberia, Mongolia, Alaska, and Canada. Molecular genetic evidence indicates that Beringian populations persisted throughout the Pleistocene, while other regions were recolonized following glacial retreat. The species has been observed feeding on dead insects on snowfields and is associated with specific alpine vegetation.
Arctacaridae
Arctacaridae is a small family of mites in the order Mesostigmata, discovered and described by Evans in 1955 from arctic regions of North America. The family contains two genera, Arctacarus and Proarctacarus, with six recognized species total. These mites are among the few mesostigmatid lineages specifically adapted to cold, high-latitude environments. The genus Proarctacarus was established in 2003 based on specimens from Canada and the northwestern United States.
Asynarchus
Asynarchus is a genus of caddisflies in the family Limnephilidae, first described by McLachlan in 1880. Species are found in small, cold, oligotrophic lakes and ponds across Eurasia and Northern America. The genus includes at least two species: A. contumax and A. lapponicus. Larvae and pupae of both species have been described from central Norway.
Bombus frigidus
frigid bumblebee, frigid bumble bee
Bombus frigidus is a rare, cold-adapted bumblebee species native to arctic and subarctic regions of North America. Described by Frederick Smith in 1854, this species exhibits several specialized adaptations to its harsh environment, including thermoregulatory abilities that allow it to maintain flight at low temperatures, shortened copulation duration compared to other bumblebees, and an early-emergence colony cycle synchronized with brief arctic summers. The species has developed a notable mutualistic relationship with Mertensia paniculata, using floral color cues to efficiently locate nectar. Despite its rarity, B. frigidus is currently classified as Least Concern, though climate change poses a significant long-term threat to its specialized habitat.
Boreidae
snow scorpionflies, snow fleas
Boreidae, commonly known as snow scorpionflies or snow fleas, are a small family of approximately 30 species of scorpionflies in the order Mecoptera. These tiny, wingless insects are notable for their unusual winter activity period, emerging on snow surfaces during cold months when most other insects are dormant. Recent molecular research indicates Boreidae are more closely related to fleas (Siphonaptera) than to other scorpionflies, a finding that has significant implications for understanding the evolutionary relationships within Mecoptera. The family has a boreal and high-altitude distribution in the Northern Hemisphere, with species documented across North America, Europe, and Asia.
Boreus californicus
California Snow Scorpionfly
Boreus californicus is a flightless species of snow scorpionfly endemic to western North America. It is active on snow surfaces across a broad elevation gradient from valley grasslands to alpine areas above tree line. The species exhibits a distinctive life history tied to snow cover, with mating occurring directly on snow surfaces. Surface activity has been documented at temperatures ranging from −5.0°C to 5.5°C, with pairs in copula observed between −0.5°C and 5.5°C.
Boreus elegans
snow scorpionfly
Boreus elegans is a species of snow scorpionfly in the family Boreidae, described by Carpenter in 1935. Like other members of its genus, it is adapted to cold environments and is active during winter months when most other insects are dormant. The species is found in North America. Snow scorpionflies are characterized by their reduced wings and distinctive jumping ability.
Boreus insulanus
Island Snow Scorpionfly
Boreus insulanus is a species of snow scorpionfly endemic to Vancouver Island, British Columbia. It belongs to the family Boreidae, a group of small, cold-adapted insects active during winter months. Like other snow scorpionflies, it lacks functional wings and is among the rarest insects encountered in its region. The species was described by Blades in 2002.
Boreus nix
snow scorpionfly
Boreus nix is a species of snow scorpionfly in the family Boreidae, first described by Carpenter in 1935. It belongs to an unusual group of insects adapted to cold environments, with adults active during winter months when most other insects are dormant. The species is documented from North America, though specific details about its biology and ecology remain limited in published literature.
Capniidae
small winter stoneflies, winter stoneflies
Capniidae, the small winter stoneflies, is one of the largest families in the order Plecoptera, comprising approximately 300 species distributed throughout the Holarctic region. Adults are active during winter months, often observed on snow-covered stream banks when most other insects are dormant. The family exhibits notable adaptations to cold environments, including antifreeze compounds and winglessness in some species, which has led to high endemism and restricted distributions. Their closest relatives are the rolled-winged stoneflies (Leuctridae).
Chionea
Snow Flies, Snow Crane Flies
Chionea is a genus of wingless crane flies in the family Limoniidae, commonly known as snow flies. The genus contains approximately 37-40 recognized species distributed across the northern hemisphere, with two subgenera: the Holarctic Chionea and the Palearctic Sphaeconophilus. Adults are uniquely adapted to cold environments and are active during winter months, walking across snow surfaces at sub-zero temperatures. The wingless condition is associated with energy conservation in freezing conditions, with flight muscles replaced by expanded egg storage capacity in females.
Chionea albertensis
snow fly
Chionea albertensis is a wingless crane fly in the family Limoniidae, first described by Charles Paul Alexander in 1941. As a member of the 'snow fly' genus Chionea, it is adapted to cold environments and has been observed active on snow surfaces during winter months. The species is known from western North America, with records from Alberta, British Columbia, and southward to Oregon, Idaho, and Montana. Like other Chionea species, it lacks wings and has modified life history traits associated with subnivean habitats.
Chionea stoneana
snow fly
Chionea stoneana is a wingless crane fly species in the family Limoniidae, commonly known as a 'snow fly.' Adults are active during winter months and are frequently observed crawling on snow surfaces. The species occurs in the central United States, ranging from Minnesota and Indiana south to Kansas, Oklahoma, and Missouri. Like other members of its genus, it possesses physiological adaptations for cold tolerance, including glycerol in its body fluids that acts as an antifreeze.
Chionea valga
snow fly
Chionea valga is a wingless crane fly commonly known as the snow fly. It is active during winter months, crawling across snow surfaces in cold conditions when most other insects are dormant. Adults are dark-bodied and lack wings entirely, with females storing eggs in the thoracic cavity normally occupied by flight muscles. The species occupies subnivean microhabitats—spaces beneath snow created by vegetation and rodent tunnels—where temperatures remain milder than surface conditions.
Cicurina brevis
Cicurina brevis is a small araneomorph spider species distributed across northern North America. A 2024 study identified this species as a potential subnivium specialist, exhibiting higher population densities beneath seasonal snowpack in winter than during summer months. This seasonal activity pattern suggests adaptation to cold-weather environments, distinguishing it from typical summer-active forest floor spiders.
Colias behrii
Behr's sulphur, Sierra green sulfur, Sierra Sulphur
Colias behrii is a small alpine butterfly endemic to the Sierra Nevada of California, restricted to high-elevation habitats mostly around and above 9,000 feet. It has a wingspan of 35–42 mm and is active from July to August. The species has been subject to genetic study revealing a historical range-wide bottleneck approximately 531–281 years ago, coinciding with a period of global cooling.
Corymbitodes lobatus
Alaskan Click Beetle
A click beetle species in the family Elateridae, known from high-latitude regions of North America. The species is documented from Alaska and the Northwest Territories of Canada. Adults are active during the brief Arctic summer. The common name reflects its association with Alaskan habitats, though its range extends into northern Canada.
Culiseta
Culiseta is a genus of mosquitoes in the family Culicidae. Most species are cold-adapted and occur in warmer climates primarily during colder seasons or at higher elevations. The genus is distributed worldwide except South America. Several species are significant disease vectors, including C. melanura, the primary vector of eastern equine encephalitis virus in North America. Species exhibit diverse larval habitats ranging from bogs and marshes to tree holes, rock pools, and underground sites.
Culiseta alaskaensis
Alaskan winter mosquito
Culiseta alaskaensis, the Alaskan winter mosquito, is a Holarctic mosquito species adapted to cold subarctic and arctic environments. It has a univoltine life cycle with larvae overwintering and adults emerging in late summer. Females exhibit a distinctive reproductive strategy: they are autogenous for their first egg batch, producing eggs without a blood meal, but require blood for subsequent batches. Adults enter hibernation shortly after emergence without mating or feeding, with mating deferred until spring.
Cyphoderris buckelli
Buckell's grig
Cyphoderris buckelli is a cold-adapted, hump-winged cricket (family Prophalangopsidae) found in high-elevation coniferous forests of western North America. Males produce acoustic calling songs and modify their chirp duty cycle in response to nearby conspecific males, though they do not defend fixed territories. The species exhibits low site fidelity and extensive male displacement between nights.
Cyphoderris strepitans
sagebrush cricket, sagebrush grig
Cyphoderris strepitans is a primitive orthopteran and one of few surviving members of the family Prophalangopsidae, a relict group known primarily from fossils. The species is endemic to the mountains of Wyoming and Colorado, where males produce loud calling songs by stridulation to attract females. A notable feature of its reproductive biology is sexual cannibalism during mating, where females consume the male's fleshy hind wings and hemolymph, and subsequently a proteinaceous spermatophore. Males experience significant energetic costs from this nuptial feeding, reducing their ability to call and remate. The species is cold-adapted and capable of singing at temperatures as low as -8°C.
Desoria
Desoria is a genus of springtails (Collembola: Isotomidae) characterized by cold-adapted, cryophilic species active in low-temperature environments. Members occur in diverse cold habitats including alpine glaciers, subnivean zones, and Antarctic ice-free areas. The genus is currently considered polyphyletic based on genetic analysis. Several species face elevated extinction risk due to climate change and habitat loss, particularly those restricted to shrinking glacial environments.
Desoria hiemalis
Desoria hiemalis is a springtail species in the family Isotomidae, first described by Schött in 1893. It is a winter-active species, as indicated by its specific epithet "hiemalis" (Latin for "of winter"). The species has been recorded from both European and North American localities, including the Pacific Northwest region. It belongs to a diverse genus of soil-dwelling springtails commonly found in cold environments.
Egira hiemalis
Egira hiemalis is a noctuid moth species native to western North America. Adults are active during winter and early spring, an unusual seasonality for Lepidoptera. The species is notable for its cold-weather activity pattern and association with coniferous and hardwood host plants. It was first described by Grote in 1874 under the basionym Xylomiges hiemalis.
Eurekapnia maculata
Spotted Snowfly
Eurekapnia maculata is a species of winter stonefly in the family Capniidae, commonly known as the Spotted Snowfly. It belongs to a group of small stoneflies adapted to cold environments, with adults typically emerging during winter months when temperatures are near freezing. The species is native to North America and shares characteristics typical of the Capniidae family, including reduced wing venation and small body size.
Formica glacialis
Icy Mound Ant
Formica glacialis is a cold-adapted ant species in the Formicinae subfamily, described by William Morton Wheeler in 1908. It belongs to the Formica fusca species group and is primarily found in montane and boreal environments of eastern North America. The species is notable for its association with cold, high-elevation habitats, including areas with persistent snow cover.
Gnaphosa orites
Gnaphosa orites is a ground spider in the family Gnaphosidae with the broadest latitudinal distribution of any species in its genus, ranging from 43° to 70°N across the Holarctic region. The species was first described by Chamberlin in 1922 and has since been recorded from northern Europe, Scandinavia, the Caucasus, and across Russia from Europe to the Far East, as well as North America. A 2011 study documented its southernmost record in the Russian Far East, extending the known range of this cold-adapted species.
Gynaephora rossii
Ross' tussock moth
Gynaephora rossii is a cold-adapted tussock moth distributed across the Holarctic tundra and alpine regions. The species is notable for its extended larval development period of 7–11 years and its ability to survive freezing temperatures. Adults are active during daylight hours in summer, with males actively searching for females while females are largely sedentary. The caterpillars feed primarily on Saxifraga species and certain willows.
Hadromorphus inflatus
Hadromorphus inflatus is a species of click beetle (Elateridae) native to northeastern North America. The species was previously classified under the genus Porrhodites and has been identified as a potential subnivium specialist—an arthropod adapted to the air pocket beneath winter snowpack. Research suggests it dominates subnivium communities during winter months and is rare or inactive during summer, indicating a specialized cold-season life history.
Hahnia glacialis
Hahnia glacialis is a species of dwarf sheet spider in the family Hahniidae, first described by Sørensen in 1898. It is among the smallest members of its family, with adult body lengths under 4 millimeters. The species has a Holarctic distribution, occurring in cold-adapted regions of northern North America and Eurasia. Like other hahniids, it possesses the distinctive comb-like arrangement of spinnerets that gives the family its common name.
Helopini
darkling beetles
Helopini is a tribe of darkling beetles within the family Tenebrionidae, containing at least 50 genera. Members are distributed across diverse habitats from lowlands to high-altitude areas, including cold environments. Several species have been documented feeding on lichens, with some showing specialized associations with particular lichen families. The tribe includes both native and introduced species, with some taxa demonstrating cold-adaptation mechanisms including antifreeze proteins.
Hesperoboreus
Hesperoboreus is a genus of snow scorpionflies (Mecoptera: Boreidae) established by Norman Penny in 1977. Members of this genus are small, wingless insects adapted to cold environments. The genus is distinguished from the related Boreus by morphological features of the male genitalia. Very few observations exist, with only three records documented on iNaturalist as of the knowledge cutoff.
Hilaira
dwarf spiders
Hilaira is a genus of dwarf spiders in the family Linyphiidae, first described by Eugène Louis Simon in 1884. The genus contains 25 species distributed across the Holarctic region, with particularly high diversity in northern Eurasia and North America. Species occur in a range of cold-temperate to subarctic habitats including boreal forests, tundra, and mountainous regions. Several species are restricted to high-latitude or high-elevation environments.
Holoboreaphilus nordenskioldi
Holoboreaphilus nordenskioldi is a species of rove beetle in the family Staphylinidae, subfamily Omaliinae. It has a Holarctic distribution spanning northern regions of North America and Eurasia. The species was described by Mäklin in 1878 and is placed in the tribe Coryphiini. Like other members of this genus, it is associated with northern boreal and arctic-alpine habitats.
Lesteva cribratula
Lesteva cribratula is a small rove beetle (Staphylinidae) native to eastern North America. It has been identified as a likely subnivium specialist, active beneath winter snowpack and rare or inactive during summer months. The species inhabits the air gap between soil and snow, where it likely functions as a predator in cold, stable conditions. Climate change poses a threat to this species through declining snowpack, which exposes subnivium habitats to temperature extremes.
Mycomya
fungus gnats
Mycomya is a large genus of fungus gnats (family Mycetophilidae) containing at least 400 described species. Members are small flies associated with fungal habitats. The genus has a cosmopolitan distribution with records from multiple continents including South America, Australia, New Zealand, and Japan. Some species show cold adaptation and winter activity patterns.
Nebria frigida
frigid gazelle beetle
Nebria frigida is a ground beetle species in the subfamily Nebriinae, described by R.F. Sahlberg in 1844. It exhibits a Holarctic distribution spanning the Palearctic and Nearctic realms. Adults are nocturnal and carnivorous. The species inhabits cold-temperate and boreal regions, with populations established across northern Eurasia and western North America.
Nebria gebleri gebleri
Nebria gebleri gebleri is a subspecies of ground beetle in the family Carabidae, subfamily Nebriinae. It is native to boreal and montane regions of North America, with records from Alaska, Canada, and the contiguous United States. The species is part of the subgenus Catonebria, a group characterized by cold-adapted biology and often associated with high-elevation or high-latitude habitats.
Oemopteryx glacialis
Canadian willowfly
Oemopteryx glacialis, commonly known as the Canadian willowfly, is a winter stonefly species in the family Taeniopterygidae. It is one of several North American stoneflies adapted to cold-weather activity, with adults emerging during winter months when most other insects are inactive. The species has been recorded from the northeastern United States and adjacent Canada, including Connecticut, Michigan, Minnesota, New York, and Ontario.
Oeneis
Arctics, graylings
Oeneis is a genus of butterflies in the subfamily Satyrinae, commonly known as the Arctics or graylings. Members of this genus are remarkable for their adaptation to extreme cold environments, with most species restricted to Arctic, sub-Arctic, or high-altitude alpine habitats. The genus exhibits a disjunct distribution across the Northern Hemisphere, with species found in Europe, Arctic Russia, Siberia, Mongolia, Arctic North America, and the Rocky Mountains. Many species have biennial life cycles, with development typically spanning two years. The genus comprises approximately 32 recognized species arranged into several species groups based on phylogenetic relationships.
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.
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Apollos, snow Apollos
Parnassius is a genus of cold-adapted butterflies found in northern circumpolar regions and high-elevation montane habitats including the Alps and Himalayas. These butterflies exhibit altitudinal melanism—dark bodies and darkened wing bases that facilitate rapid solar warming in cold environments. Despite belonging to the swallowtail family Papilionidae, they lack the characteristic tail extensions. The genus comprises 38–47 disputed species and serves as an important model system for studying metapopulation dynamics, population genetics, and thermal ecology in the context of climate change.
Parnassius clodius
Clodius Parnassian, American Apollo
Parnassius clodius is a cold-adapted white butterfly in the snow Apollo genus, found in western North America from sea level to alpine zones. It inhabits diverse environments including coastal forests, sagebrush meadows, and subalpine habitats. The species is a model organism for studying thermal ecology and climate change impacts on high-elevation insects. Adults are poor dispersers with limited gene flow between populations. Larvae are specialized herbivores of Dicentra species and exhibit behavioral thermoregulation.
Parnassius clodius strohbeeni
Strohbeen's Parnassian
Parnassius clodius strohbeeni is a subspecies of the American Apollo butterfly, a cold-adapted member of the snow Apollo genus in the swallowtail family. As part of the Parnassius clodius species complex, this subspecies inhabits high-elevation environments in western North America. The species is notable for its physiological adaptations to cold climates, with research indicating that overwintering eggs can survive temperatures as low as -30°C. Like other Parnassius species, it is considered vulnerable to climate change due to its specialized alpine habitat requirements and limited dispersal ability.
Parnassius eversmanni
Eversmann's parnassian
Parnassius eversmanni, or Eversmann's parnassian, is a high-altitude butterfly in the swallowtail family Papilionidae. It occurs across a broad transcontinental range spanning eastern Russia, Mongolia, Japan, Alaska, and the Yukon. The species was named in honor of Eduard Friedrich Eversmann. Like other Parnassius species, it exhibits complex wing pattern variation with numerous described subspecies and forms, making identification challenging without examination of structural characters.
Pieris angelika
Arctic White
Pieris angelika, commonly known as the Arctic White, is a cold-adapted butterfly in the family Pieridae. It occurs in subarctic and boreal regions of northwestern North America. The species was described by Eitschberger in 1984, though its taxonomic status may be subject to revision due to potential earlier descriptions. It is one of the few Pieris species specialized for high-latitude environments.
Prenolepis
Winter Ants and Allies
Prenolepis is a genus of ants in the subfamily Formicinae with a wide geographic distribution spanning southeastern Asia, southern China, North America, southern Europe, Anatolia, Cuba, Haiti, and West Africa. The genus is best known for P. imparis, commonly called the winter ant or false honey ant, which exhibits unique cold-adapted activity patterns and serves as a model organism for thermal physiology research. Most Prenolepis species are small, ground-nesting ants that inhabit woodland and forest environments.
Prenolepis imparis
winter ant, false honey ant, false honeypot ant, American Winter Ant
Prenolepis imparis is a cold-adapted ant species widespread across North America, notable for being active during winter and early spring when most other ants are dormant. The species exhibits distinctive thermal physiology, with workers foraging at near-freezing temperatures and colonies undergoing summer aestivation. Workers are small (3-4 mm), brown, with shiny gasters. The species produces specialized replete workers that store fat and nutrients as living energy reserves. Five highly divergent genetic lineages occur across the continent, with limited gene flow between them. Nuptial flights occur unusually early, from February through April.
Psychoglypha
Snow Sedges
Psychoglypha is a genus of northern caddisflies in the family Limnephilidae, commonly known as Snow Sedges. The genus contains approximately 14 described species, with most species being cold-adapted and exhibiting late-season activity patterns. The majority of species are distributed in northern and western North America, including Oregon, California, Nevada, Idaho, and western Canada.
Pterostichus brevicornis
Woodland ground beetle
Pterostichus brevicornis is a circumpolar ground beetle in the family Carabidae, subgenus Cryobius. It is one of the most abundant and widespread tundra beetles, occurring across Arctic and Subarctic regions from Newfoundland to the Kola Peninsula and Arctic Ocean islands. The species exhibits high genetic and morphological variability across its range, with 23 documented COI haplotypes. It is cold-adapted with a two-year life cycle involving summer breeding and winter hibernation of both adults and larvae.
Sminthurinus
Sminthurinus is a genus of springtails in the family Katiannidae, described by Börner in 1901. The genus contains approximately 90 described species. Members of this genus are globular springtails (order Symphypleona), characterized by their rounded body shape. They are found across diverse geographic regions including Arctic, Antarctic, Andean, and oceanic island habitats.
Symmetrischema tangolias
South American potato tuber moth, Andean potato tuber moth, tomato stemborer
Symmetrischema tangolias is a gelechiid moth native to the Andean region of South America that has become a globally significant agricultural pest. The species infests solanaceous crops, particularly potatoes and tomatoes, with larvae burrowing into stems, leaves, petioles, and tubers. It has established invasive populations in North America, Australia, New Zealand, Indonesia, and Chile. The species is adapted to cooler temperatures than the related potato tuber moth Phthorimaea operculella, with optimal development occurring between 14–17°C.
Thanatophilus trituberculatus
Cold-shore Carrion Beetle
Thanatophilus trituberculatus is a carrion beetle in the family Silphidae. The species occurs across northern regions of both North America and Eurasia. It is associated with cold environments, as indicated by its common name "Cold-shore Carrion Beetle" and its distribution in subarctic and boreal zones. Like other members of its genus, it likely feeds on decomposing animal matter.
Trichocera
winter crane flies
Trichocera is a genus of winter crane flies comprising over 140 described species. Adults are among the few insects regularly active during winter months, often appearing at porch lights or forming aerial swarms on sunny days. The genus is distinguished from other crane flies by the presence of three ocelli on the crown of the head. Most North American species belong to this genus, with larvae developing in decaying organic matter including leaf litter, compost, fungi, and manure.
Trichocera salmani
Winter crane fly
Trichocera salmani is a species of winter crane fly in the family Trichoceridae. Like other members of this family, adults are active during cold months when few other insects fly. The species was described by Alexander in 1927 and has been recorded from Vermont and other parts of the United States.
Trichoceridae
winter crane flies, winter gnats
Trichoceridae, commonly known as winter crane flies or winter gnats, is a small family of delicate, long-legged flies in the order Diptera. Adults are active primarily during cold seasons, including fall, winter, and early spring, with some species observed in snow. They are distinguished from other crane fly families by the presence of three ocelli (simple eyes) on the crown of the head. The family contains approximately 160 described species worldwide, with most diversity concentrated in non-tropical, Holarctic regions. Larvae inhabit moist terrestrial environments where they feed on decaying organic matter.
Utacapnia
small winter stoneflies
Utacapnia is a genus of small winter stoneflies in the family Capniidae. The genus contains approximately 11 described species, most of which were first described by entomologists Alan V. Nebeker and Arden R. Gaufin during the 1960s. Species in this genus are primarily distributed in the Rocky Mountains of North America. As winter stoneflies, members of this genus are active during cold months, a trait characteristic of the family Capniidae.
Utacapnia trava
Yellowstone Snowfly
Utacapnia trava, commonly known as the Yellowstone snowfly, is a small winter stonefly in the family Capniidae. It is one of approximately 16 species in the genus Utacapnia, which is endemic to western North America. The species was originally described as Capnia trava in 1965 before being transferred to Utacapnia. Like other winter stoneflies, adults are active during cold months when most other insects are dormant.