Subterranean
Guides
Campodeidae
slender entrophs
Campodeidae is a family of small, pale, eyeless hexapods in the order Diplura, distinguished by two long, many-segmented cerci at the abdomen tip. The family contains at least 30 genera and approximately 280 described species, distributed across soil and cave habitats worldwide. Members range from 5–12 mm in length, with the largest species being the cave-dwelling Pacificampa daidarabotchi from Japan. Abdominal spiracles are absent. The family exhibits diverse ecological strategies, with many species adapted to subterranean environments showing troglomorphic features such as elongated appendages and enhanced sensory structures.
Catopocerinae
Catopocerinae is a subfamily of small beetles within Leiodidae, containing at least two extant genera—Catopocerus and Pinodytes—in North America, plus the extinct genus Archaeocerus from Cretaceous Myanmar amber. All described extant species are eyeless and wingless, inhabiting forest soil and litter. The subfamily has been revised taxonomically with numerous new species described, particularly in western North America.
Catopocerus
Catopocerus is a genus of small beetles in the family Leiodidae, subfamily Catopocerinae. These beetles are primarily subterranean or cave-dwelling, with reduced eyes and elongated appendages adapted to dark environments. The genus was established by Motschulsky in 1870 and contains species distributed across parts of North America and Eurasia. Members of this genus are among the most troglomorphic beetles in their family.
Catopocerus appalachianus
Catopocerus appalachianus is a small beetle species in the family Leiodidae, subfamily Catopocerinae. It was described by Peck in 1975 and is endemic to the Appalachian region of the eastern United States. The species belongs to a genus characterized by reduced eyes and subterranean or cave-associated habits. Records indicate it has been collected from Alabama, Illinois, Kentucky, North Carolina, Tennessee, Virginia, and West Virginia.
Catops geomysi
Catops geomysi is a small carrion beetle in the family Leiodidae, described by Peck & Skelley in 2001. It belongs to the genus Catops, a group of beetles associated with decaying organic matter and small mammal burrows. The species is known from scattered records across the south-central and southeastern United States.
Catoptrichus
Catoptrichus is a genus of small carrion beetles in the family Leiodidae, subfamily Cholevinae. Members of this genus are eyeless, subterranean-adapted beetles associated with cave and soil habitats. The genus was established by Andrew Murray in 1856 and is placed in the subtribe Catopina.
Ceuthophilus guttulosus
Thomas' camel cricket
Ceuthophilus guttulosus, commonly known as Thomas' camel cricket, is a species of wingless orthopteran in the family Rhaphidophoridae. It was described by Francis Walker in 1869 and is native to North America. Like other members of the genus Ceuthophilus, it is adapted to cool, damp, dark habitats and possesses the characteristic hump-backed profile and elongated appendages typical of camel crickets.
Ceuthophilus nodulosus
camel cricket, cave cricket
Ceuthophilus nodulosus is a species of camel cricket in the family Rhaphidophoridae. It is a wingless, humpbacked insect with exceptionally long antennae adapted for navigating dark environments. The species is found in North America, with records from Missouri, New Mexico, and Texas. Like other members of its genus, it inhabits cool, damp, dark microhabitats and is primarily nocturnal.
Ceuthophilus utahensis
Utah camel cricket
Ceuthophilus utahensis, the Utah camel cricket, is a wingless orthopteran in the family Rhaphidophoridae. The species is native to western North America, with documented occurrences in Colorado, New Mexico, and Utah. Like other camel crickets, it is adapted to dark, moist microhabitats. The species was described by Thomas in 1876.
Ceuthophilus williamsoni
Ozark cave cricket
Ceuthophilus williamsoni, commonly known as the Ozark cave cricket, is a species of camel cricket in the family Rhaphidophoridae. It was described by Hubbell in 1934 and is endemic to the Ozark region of North America. Like other members of its genus, it is adapted to dark, humid cave environments. The species is part of a group of camel crickets that are sometimes mistaken for true grasshoppers due to their similar body plan and jumping ability.
Cholevinae
small carrion beetles, round fungus beetles
Cholevinae is a subfamily of small carrion beetles within the family Leiodidae (Coleoptera), containing more than 260 genera and over 1,100 described species. The subfamily includes diverse ecological groups: necrophagous species that feed on carrion and dung, mycophagous species associated with fungi, and numerous troglobitic and troglophilic lineages adapted to subterranean habitats. The tribe Leptodirini within Cholevinae represents one of the most diverse radiations of subterranean animals globally, with approximately 1,340 species and subspecies distributed from the Iberian Peninsula to Iran.
Cirolanidae
Cirolanidae is a family of aquatic isopod crustaceans established by Dana in 1852. The family encompasses approximately 70 genera and over 500 species, ranging from small interstitial forms to the supergiant deep-sea isopods of the genus Bathynomus that can exceed 30 cm in length. Members occupy diverse aquatic habitats including marine coastal waters, deep-sea environments, freshwater systems, and subterranean groundwater. The family is characterized by dorsoventrally flattened bodies and includes both free-living and troglobitic species.
Cirolanides
Cirolanides is a genus of eyeless isopods in the family Cirolanidae, first described by Benedict in 1896. The genus contains two species: C. texensis and C. wassenichae. Members are characterized by reduced visual structures and specialized appendages adapted for subterranean life. These crustaceans represent a lineage adapted to dark, aquatic habitats.
Cirolanides texensis
Cirolanides texensis is a subterranean isopod species endemic to Texas. It belongs to the family Cirolanidae, a group of predominantly aquatic isopods that includes many cave-dwelling species. The species was described in 1896 by Benedict and is known from limited observations in karst groundwater systems.
Clivinini
Clivinini is a tribe of ground beetles (Carabidae: Scaritinae) containing over 70 genera and more than 1,200 described species. Members are predominantly soil-dwelling or subterranean, with many species adapted to endogean (buried soil) or troglobitic (cave) habitats. The tribe includes several subtribes, most notably Ardistomina (containing Aspidoglossa, Semiardistomis, and Ardistomis) and Reicheiina. Species occur across all major biogeographic regions, with significant radiations in tropical and subtropical karst systems.
Conicera
coffin flies
Conicera is a genus of phorid flies in the subfamily Conicerinae, commonly referred to as coffin flies. The genus is notable for species such as Conicera tibialis, which are associated with buried human cadavers and have exceptional abilities to colonize underground environments. Adult females can burrow through soil to access enclosed spaces such as coffins. Some species can complete multiple generations entirely underground without surfacing.
Conicera tibialis
coffin fly
Conicera tibialis, commonly known as the coffin fly, is a phorid fly species known for its unique association with buried human cadavers. Adult females possess the remarkable ability to burrow through soil to access coffins and lay eggs on or near corpses. The species has been documented completing multiple generations entirely underground without surfacing, and has been found on cadavers years after death, with one recorded case of activity 18 years postmortem.
Coptotermes
Coptotermes is a genus of subterranean termites in the family Rhinotermitidae, containing approximately 71 described species. The genus is thought to have originated in Southeast Asia and includes some of the world's most economically destructive termite pests, notably Coptotermes formosanus (Formosan subterranean termite) and C. gestroi (Asian subterranean termite). A 2013 consensus among 31 termite experts reduced the number of validated species from 69 to 21 based on morphological and molecular evidence, with many historical names suspected to be synonyms. Species in this genus exhibit complex social behaviors including age-based task division and unique nitrogen recycling strategies.
termitepestinvasivestructural-pestsubterraneanRhinotermitidaeHeterotermitidaeeconomic-pesturban-entomologycolonysocial-insectmoltingnitrogen-recyclingexuviaeage-polyethismFormosan-subterranean-termiteAsian-subterranean-termiteSoutheast-Asia-originwood-feedingcellulosegut-protozoalower-termiteevolutionary-transitiontunnelingforagingtrophallaxisproctodeal-trophallaxiscarton-nestAhamitermesparasitechitin-synthesis-inhibitorCSI-baitmolting-site-fidelityinvasive-speciesurban-peststructural-damagequarantineshippingrailroad-tiesmulchHawaiiFloridaLouisianaTaiwanJapanChinaPhilippinesAustraliatemperature-limitationhumidity-requirementcolony-sizeseveral-millionalatesswarmingnematode-associationvertical-transfermorphological-plasticitymolecular-identificationmitochondrial-DNACOII12S-rRNA16S-rRNAconsortium-taxonomytaxonomic-cold-casesynonymyWasmann-1896Corydiidae
Sand Cockroaches, Sand Roaches
Corydiidae is a family of cockroaches in the order Blattodea, commonly known as sand cockroaches or sand roaches. The family was previously classified as Polyphagidae and contains approximately 40 genera divided among five subfamilies: Corydiinae, Latindiinae, Tiviinae, Euthyrrhaphinae, and Holocompsinae. Members are frequently associated with harsh, dry habitats including deserts and arid regions—environments not typically associated with cockroaches. Many species exhibit subterranean habits, making them easily overlooked. The genus Arenivaga (desert cockroaches) is particularly notable, with 39 new species described in a 2014 revision, expanding from 9 previously known species. The family has a worldwide distribution with significant diversity in North America, Asia, and other arid regions.
Corydioidea
Sand and Cave Cockroaches
Corydioidea is a superfamily of cockroaches (order Blattodea) containing two extant families: Corydiidae (sand cockroaches) and Nocticolidae (cave cockroaches). Together these comprise approximately 50 genera and 250 species. The superfamily also includes two extinct families: Liberiblattinidae and Manipulatoridae from the Cretaceous. Molecular dating places the origin of crown Corydioidea at the Triassic–Jurassic boundary.
Crangonyctidae
Crangonyctidae is a family of freshwater amphipod crustaceans containing both surface-dwelling and subterranean species. The family includes notable genera such as Crangonyx, Stygobromus, Bactrurus, and Synurella. Many species are obligate groundwater inhabitants adapted to cave and aquifer environments, while others occupy springs, streams, and lakes. The family has a broad geographic distribution across the Northern Hemisphere, with significant diversity in North America, Europe, and Asia.
Crangonyx
cave amphipods, spring amphipods
Crangonyx is a genus of freshwater amphipod crustaceans in the family Crangonyctidae. Species inhabit diverse aquatic environments including surface waters (marshes, swamps, lakes, rivers) and subterranean habitats (caves, springs, groundwater systems). The genus includes both native and highly invasive species, with some taxa exhibiting troglobitic adaptations such as reduced eyes and elongated appendages. Several species have been introduced outside their native ranges, notably Crangonyx pseudogracilis and C. floridanus in Europe and Asia, where they interact competitively and predatorily with native amphipods.
Crumomyia
Crumomyia is a genus of small flies in the family Sphaeroceridae, commonly known as lesser dung flies. Species in this genus have been documented from caves in Europe, including a troglophilous population in the Czech Republic that shows morphological adaptations to subterranean life. The genus is distributed across northern and central Europe, with records from Denmark, Norway, and Sweden.
Cryptops
cave centipedes
Cryptops is a genus of centipedes in the family Cryptopidae, commonly referred to as cave centipedes. The genus has a worldwide distribution with numerous species documented across Europe, Asia, and other regions. Some species exhibit troglobitic adaptations, including Cryptops speleorex from Romania's Movile Cave, which has evolved in isolation for millions of years in a chemosynthetic ecosystem. DNA barcoding studies have revealed greater species diversity than previously recognized, with cryptic species and large genetic distances between morphologically similar taxa.
Cydninae
burrower bugs, burrowing bugs
Cydninae is the largest and most diverse subfamily of burrower bugs (family Cydnidae), comprising approximately 11 genera and at least 40 described species worldwide. Members are characterized by their subterranean lifestyle and burrowing adaptations. The subfamily includes two recognized tribes, Cydnini and Geotomini. Several species are considered agricultural pests due to their feeding habits on crop plants and seeds.
Cyrtomenus
burrowing bugs, burrower bugs
Cyrtomenus is a genus of burrower bugs in the family Cydnidae, subfamily Cydninae, comprising approximately nine described species distributed in the Neotropics. Species in this genus are characterized by morphological adaptations for digging and exhibit polyphagous feeding habits. At least two species, C. bergi and C. mirabilis (now synonymized), are recognized as significant agricultural pests, particularly of cassava roots. The genus is distinguished among Neotropical Cydninae by the strongly flattened posterior tibia, a feature shared with the related genus Prolobodes.
Diaperinae
Diaperinae is a subfamily of darkling beetles (Tenebrionidae) comprising more than 120 genera organized into 11 tribes. The subfamily exhibits considerable ecological diversity, including fungivorous species that inhabit fruiting bodies of bracket fungi, myrmecophilous species that live commensally within ant nests, and free-living forms. Some species display specialized adaptations such as reduced eyes for subterranean life, compact rounded body shapes for physical defense against ants, and cuticular hydrocarbon mimicry of host ant recognition signals.
Diplura
Two-pronged Bristletails
Diplura is an order of small, wingless, eyeless hexapods within the class Entognatha, characterized by a distinctive pair of caudal appendages (cerci) that give them their common name "two-pronged bristletails." The group comprises approximately 800 described species worldwide, ranging from 2 to 50 mm in length, with some species reaching up to 8 cm. They inhabit moist soil, leaf litter, humus, and caves across all continents except Antarctica. Diplurans possess concealed mouthparts (entognathous), long bead-like antennae, and the ability to autotomize their cerci when threatened.
Dolopomyrmex
Dolopomyrmex is a monotypic genus of ants in the subfamily Myrmicinae, containing only Dolopomyrmex pilatus. The genus is endemic to arid regions of the western and southwestern United States. These ants are believed to be almost exclusively subterranean, making them rarely observed above ground.
Dytiscidae
predaceous diving beetles, diving beetles
Dytiscidae, the predaceous diving beetles, is a family of aquatic beetles containing over 4,000 described species. Adults range from 0.9 mm to 4.75 cm in length, with most species between 1–2.5 cm. They are characterized by enlarged, flattened hind legs adapted for swimming and a streamlined, oval body shape that reduces drag underwater. The family exhibits remarkable chemical ecology, producing unique defensive steroids found nowhere else in the animal kingdom. Larvae, known as "water tigers," are elongate predators with sharp, pincer-like mandibles that inject digestive enzymes into prey.
Emblyna borealis cavernosa
Emblyna borealis cavernosa is a subspecies of mesh-web weaver spider in the family Dictynidae. It is known from high-latitude and high-altitude regions of the northern hemisphere, including Greenland, northern Canada, and northeastern Siberia. The subspecies designation suggests cave-associated or subterranean habitat preferences, though specific ecological details remain poorly documented. Like other dictynid spiders, it constructs irregular mesh webs for prey capture.
Entomobrya zona
Rocky Mountain Springtail
Entomobrya zona, commonly known as the Rocky Mountain springtail, is a small springtail species endemic to the Rocky Mountains and known from three caves in the Grand Canyon. Adults reach approximately 2 mm in length and are characterized by tan coloration with black markings, including a distinctive wide dark band running down the center of the abdomen. The species occurs at elevations from 1,700 to over 3,000 meters in arid environments and coniferous forests. It is frequently found in subterranean habitats, where it is considered a troglophile.
Euhadenoecus fragilis
Tawney's Cave Cricket, tawneys cave cricket
Euhadenoecus fragilis is a species of camel cricket in the family Rhaphidophoridae. It was described by Hubbell in 1978. The species is known from cave environments in North America, with documented occurrences in Virginia. Like other members of the family Rhaphidophoridae, it is wingless and adapted to subterranean habitats.
Euzophera magnolialis
magnolia root borer
Euzophera magnolialis is a snout moth described by Capps in 1964, restricted to the southern United States. Its common name, magnolia root borer, reflects its specialized larval habit of boring into the roots of Magnolia grandiflora. The species has a wingspan of 34–41 mm. It is one of approximately 50 species in the genus Euzophera, a group of small moths whose larvae typically feed internally in plant tissues.
Evalljapyx hubbardi
forcepstail
Evalljapyx hubbardi is a species of forcepstail, a group of small, soil-dwelling arthropods in the class Diplura. Forcepstails are characterized by their distinctive pincer-like cerci at the posterior end of the abdomen. The species belongs to the family Evalljapygidae, which was historically placed within Japygidae. It has been documented in North America.
Feltia subterranea
granulate cutworm, subterranean dart moth, tawny shoulder, Subterranean Dart
Feltia subterranea is a noctuid moth whose larvae are subterranean cutworms feeding on plant roots and crowns. The species has a broad geographic range spanning North, Central, and South America, as well as Hawaii. Adults have a wingspan of 38–44 mm and are known to pollinate fetterbush lyonia. The larvae are polyphagous pests of numerous agricultural crops.
Flexamia huroni
Huron River Leafhopper
Flexamia huroni is a leafhopper species in the family Cicadellidae, described by Bess & Hamilton in 1999. It belongs to the genus Flexamia, a group of leafhoppers known for their specialized host plant associations with grasses. The species is named after the Huron River in Michigan, where it was first collected. Like other members of the genus, it likely exhibits strong ecological dependence on specific grass host plants.
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lobal-biodiversity-information-facilityesbiodiversity-image-portalspanish-collectionstype-specimenlichenantarcticabernensisliyellowstoneGeocolus
Geocolus is a monotypic genus of clown beetles (family Histeridae) containing a single described species, G. caecus. The genus is notable for its highly specialized subterranean ecology. The sole species exhibits extreme morphological adaptations for underground life, including near-complete eye reduction and depigmentation.
Geomysaprinus xerobatis
Geomysaprinus xerobatis is a species of clown beetle in the family Histeridae. It belongs to the genus Geomysaprinus, a group specialized for association with fossorial mammals. The species epithet "xerobatis" references its documented association with desert-dwelling pocket gophers.
Glacicavicola
Western Blind Cave Beetle
Glacicavicola is a genus of troglobitic (cave-dwelling) beetles in the family Leiodidae, endemic to caves in the western United States. The genus contains at least one described species, G. bathyscioides, which is completely eyeless and adapted to cold, humid cave environments with ice formations. These beetles exhibit specialized morphological adaptations for subterranean life, including elongated antennae and legs covered in fine setae for navigating difficult terrain.
Gnorimoschema subterranea
Gnorimoschema subterranea is a small moth in the family Gelechiidae, described by August Busck in 1911. The species is notable for its larval habit of forming stem galls at or beneath ground level on Aster species. It is distributed across North America from Massachusetts to California and north into Alberta and British Columbia.
Gryllotalpa gryllotalpa
European mole cricket
Gryllotalpa gryllotalpa, the European mole cricket, is a subterranean insect native to the Western Palaearctic and introduced to the eastern United States. It is characterized by fossorial forelegs adapted for digging, velvety body covering, and a subterranean lifestyle. The species is now understood to represent a cryptic species complex distinguishable by song patterns. In the United Kingdom, it is legally protected and considered endangered due to dramatic range contraction.
Gryllotalpa major
prairie mole cricket
Gryllotalpa major, the prairie mole cricket, is the largest cricket species in North America, endemic to the tallgrass prairie ecosystems of the south-central United States. Males exhibit a classical lekking mating system, constructing specialized acoustic burrows that amplify their calling songs to attract flying females from distances up to 400 meters. The species is threatened by habitat loss due to prairie conversion, with current populations restricted to fragmented sites in Oklahoma, Kansas, Missouri, Nebraska, and Arkansas. Research has documented unique acoustic behaviors, including harmonic chirps rather than trills, and vibrational communication between neighboring males through the soil.
Hadenoecus
Eastern Cave Crickets, cave crickets
Hadenoecus is a genus of cave crickets endemic to the southeastern United States, comprising five recognized species. These crickets are obligate cave-dwelling insects characterized by elongated antennae and enlarged hind legs adapted for movement in darkness. The genus is ecologically significant as a key component of cave ecosystems, serving as both detritivores and prey for other cave fauna. Hadenoecus subterraneus, the common cave cricket, is particularly well-studied due to its abundance in the Mammoth Cave system of Kentucky.
Hadenoecus barri
Barr's Cave Cricket
Hadenoecus barri is a species of camel cricket described by Thomas H. Hubbell in 1978. It belongs to the family Rhaphidophoridae, a group of wingless, humpbacked crickets commonly known as cave crickets or camel crickets. The species occurs in North America, with confirmed records from Tennessee. Like other members of its genus, it is likely adapted to dark, humid cave environments.
Hadenoecus jonesi
Limrock Blowing Cave Cricket, Jone's cave cricket
Hadenoecus jonesi is a cave-dwelling camel cricket endemic to the Limrock Blowing Cave system in northern Alabama. This flightless, eyeless insect belongs to the family Rhaphidophoridae, a group specialized for subterranean life. The species was described in 1978 by Thomas Hubbell and represents one of several cave-adapted orthopterans in the genus Hadenoecus.
Hadenoecus subterraneus
Mammoth Cave cricket, common cave cricket
Hadenoecus subterraneus is a troglophilic camel cricket species in the family Rhaphidophoridae, endemic to cave systems of North America. It exhibits metabolic and water economy adaptations to subterranean environments, with physiological traits scaled to body size and temperature. The species serves as an important nutrient vector in cave ecosystems through its guano, eggs, and carcasses, which support diverse communities of cave-dwelling organisms. While primarily cavernicolous, it can survive in surface environments.
Haideoporus
Haideoporus is a monotypic genus of diving beetles in the family Dytiscidae, subfamily Hydroporinae. The genus contains a single species, Haideoporus texanus, described by Young & Longley in 1976. The species is a North American endemic stygobiont, meaning it is restricted to subterranean aquatic habitats. Larval morphology has been described, showing adaptations to hypogaeic (subterranean) life.
Haideoporus texanus
Edwards Aquifer Diving Beetle
Haideoporus texanus is a stygobiontic diving beetle endemic to the Edwards Aquifer of Texas. It is a subterranean aquatic species adapted to life in groundwater systems, with larvae possessing characteristic morphological features including a nasale and absence of primary pores MXd and LAc. The species was described in 1976 and represents an independently evolved lineage within the subfamily Hydroporinae.
Haplocampa
two-pronged bristletails
Haplocampa is a genus of two-pronged bristletails (Diplura: Campodeidae) established by Silvestri in 1912. The genus contains at least five described species, including four named by Silvestri in 1912 and 1933, and one described in 2019 from Vancouver Island, Canada. Species in this genus exhibit varying degrees of cave adaptation, with some showing only slight morphological modification for subterranean life. The genus demonstrates biogeographic connections across the North Pacific, with close affinities to Pacificampa (Japan/Korea), Metriocampa (Siberia), and Eumesocampa (North America), suggesting historical dispersal via the Bering Land Bridge.