mesh web weaver
Emblyna olympiana is a small spider species in the family Dictynidae, commonly known as mesh web weavers. First described by Chamberlin in 1919, this species is documented from the United States. Members of this family construct irregular, mesh-like webs to capture prey. Published records for this species are limited, with few observations in biodiversity databases.
Emblyna saylori is a species of mesh-web weaver spider in the family Dictynidae, described by Chamberlin and Ivie in 1941. The species is known from the United States. Like other members of the genus, it likely constructs irregular, tangled mesh webs for prey capture.
mesh web weaver
Emblyna sublata is a species of mesh web weaver spider in the family Dictynidae. It was first described by Nicholas Marcellus Hentz in 1850. The species is known from North America, with records from the United States, Canada, and Mexico. As a dictynid spider, it constructs irregular mesh webs rather than the spiral orb webs typical of many other spider families.
Emblyna uintana is a species of mesh-web weaver spider in the family Dictynidae, first described by Chamberlin in 1919. It belongs to a genus of small spiders that construct irregular, tangled webs. The species is known from the western United States, with records from Utah and surrounding regions. Like other dictynids, it is a small-bodied spider with relatively simple web architecture compared to orb-weaving relatives.
windscorpion, sun spider, camel spider
Eremobates ajoanus is a species of solifuge (windscorpion) in the family Eremobatidae, described by Muma and Brookhart in 1988. Like other members of the order Solifugae, it is a nocturnal arachnid predator characterized by large, powerful chelicerae used to capture and subdue prey. The species is found in arid regions of North America, particularly in the southwestern United States and adjacent areas.
windscorpion, sun spider, camel spider, solifuge
Eremobates angustus is a species of solifuge (windscorpion or sun spider) in the family Eremobatidae, described by Muma in 1951. Solifuges are arachnids distinct from spiders and scorpions, characterized by their large, powerful chelicerae and rapid running ability. This species is part of a group of nocturnal, predatory arachnids found in arid and semi-arid regions of North America.
Coral Pink Sand Dunes Straight-faced Windscorpion
Eremobates corpink is a species of solifuge (windscorpion) in the family Eremobatidae, described in 2004 from the Coral Pink Sand Dunes region of southwestern Utah. Like other solifugids, it is a nocturnal, non-venomous arachnid with large, powerful chelicerae used to capture and kill prey. The species is named for its type locality in the distinctive pink sand dune ecosystem.
windscorpion, solifuge, sun spider, wind scorpion, camel spider
Eremobates gerbae is a species of solifuge (windscorpion) in the family Eremobatidae, described by Brookhart & Cushing in 2002. Solifuges are arachnids characterized by their large, powerful chelicerae (jaws) and are primarily nocturnal predators of small arthropods. They are not venomous and pose no medical threat to humans despite their fearsome appearance. E. gerbae is one of numerous species in the genus Eremobates, which is particularly diverse in arid regions of western North America.
camel spider, sun spider, wind scorpion, solifuge
Eremobates icenogelei is a species of solifuge (camel spider) in the family Eremobatidae. Solifugids are arachnids distinct from spiders and scorpions, characterized by their large, powerful chelicerae and rapid running ability. This species, like other members of its genus, inhabits arid and semi-arid regions of western North America. They are nocturnal predators that actively hunt small arthropods using their formidable jaws rather than venom. Despite their fearsome appearance, they pose no venomous threat to humans, though they can deliver a painful bite if handled carelessly.
solifuge, sun spider, wind scorpion
Eremobates inkopansis is a species of solifuge (order Solifugae), an arachnid group commonly known as sun spiders or wind scorpions. Like other members of the family Eremobatidae, this species possesses disproportionately large chelicerae used to capture and subdue prey. Solifugids are frequently mistaken for scorpions or spiders due to their appearance but represent a distinct arachnid lineage. They are primarily nocturnal predators of the arid southwestern United States and adjacent Mexico.
windscorpion, sun spider, camel spider
Eremobates kiseri is a species of solifuge (sun spider or windscorpion) in the family Eremobatidae, described by Muma & Brookhart in 1988. Solifugids are arachnids distinct from spiders and scorpions, characterized by their large, powerful chelicerae (jaws) and rapid movement. Like other members of the genus Eremobates, this species is native to arid and semi-arid regions of North America. The species name honors an individual, following the pattern of many Eremobates species named after collectors or researchers.
windscorpion, sun spider, camel spider
Eremobates norrisi is a species of solifuge (windscorpion) in the family Eremobatidae, described by Muma & Brookhart in 1988. Solifuges are arachnids distinct from spiders and scorpions, characterized by their large, powerful chelicerae and rapid running ability. Like other members of the genus Eremobates, this species is adapted to arid and semi-arid environments in North America.
pale windscorpion
Eremobates pallidus is a species of windscorpion (Solifugae) described by Muma and Brookhart in 1988. The specific epithet "pallidus" refers to its pale coloration. Windscorpions, also known as sun spiders or camel spiders, are arachnids characterized by their large chelicerae and rapid running speed. This species belongs to the family Eremobatidae, one of the most diverse families within the order Solifugae, which are primarily distributed in arid and semi-arid regions of North America.
pale windscorpion, pale sun spider
Eremobates pallipes is a species of solifugid (windscorpion or sun spider) in the family Eremobatidae. It occurs in western North America from Arizona northward to Canada. Males exhibit courtship and copulatory behaviors involving cheliceral engagement with females. The species is one of approximately 200 described species in the genus Eremobates, which is the most species-rich genus of solifugids in North America.
windscorpion, sun spider, camel spider
Eremobates palpisetulosus is a species of solifuge (windscorpion) in the family Eremobatidae, first described by Fichter in 1941. Solifuges are arachnids distinct from spiders and scorpions, characterized by their large, powerful chelicerae and rapid running speed. This species has been studied as part of desert arachnid community ecology, particularly in sympatric relationships with other desert predators including wolf spiders, tarantulas, whipscorpions, and scorpions.
Eremobates polhemusi is a species of solifugid (sun spider or camel spider) in the family Eremobatidae, described by Muma and Brookhart in 1988. It is endemic to Utah, United States. Like other solifugids, it is a nocturnal arachnid with large, powerful chelicerae used for capturing prey, but it lacks venom and poses no threat to humans.
windscorpion, sun spider
Eremobates socal is a species of solifuge (windscorpion or sun spider) in the family Eremobatidae, described by Brookhart and Cushing in 2004. The specific epithet 'socal' refers to its occurrence in Southern California. Like other solifuges, it is a fast-running, non-venomous arachnid often mistaken for a spider due to its appearance. The species is part of a group of arachnids characterized by their large chelicerae and rapid, erratic movement patterns.
Straight-faced Windscorpions, Sun Spiders, Wind Scorpions, Solpugids
Eremobatidae is a family of solifuges (camel spiders/wind scorpions) endemic to North America, first described by Karl Kraepelin in 1901. The family contains eight genera and approximately 187 species distributed across western North America and Central America. These arachnids are characterized by their exceptional speed, large chelicerae used for capturing prey, and adaptation to arid environments. They are non-venomous predators that rely on mechanical force to subdue prey.
windscorpion
Eremocosta striata is a species of solifuge (windscorpion) in the family Eremobatidae. Like other solifuges, it is a fast-moving, predatory arachnid with large chelicerae. The species has been recorded from both North America and Middle America. Windscorpions are not true scorpions and lack a stinger; they are also not spiders, though they share the class Arachnida with both groups.
windscorpion, sun spider
Eremothera drachmani is a species of solifuge (windscorpion or sun spider) described by Muma in 1986. It belongs to the family Eremobatidae, a diverse group of solifuges found primarily in arid and semi-arid regions. The species is known from Middle America, though specific details about its biology remain poorly documented. Like other solifuges, it is a fast-moving, predatory arachnid adapted to hot, dry environments.
windscorpion, sun spider, camel spider
Eremothera sculpturata is a species of solifuge (windscorpion) in the family Eremobatidae, described by Muma in 1951. It belongs to a group of arachnids commonly known as windscorpions, sun spiders, or camel spiders—fast-moving, predatory arachnids that are not true scorpions despite their common name. The species is part of the North American fauna of solifuges, which are primarily nocturnal and adapted to arid and semi-arid environments.
Erginulus subserialis is a harvestman (order Opiliones) in the family Cosmetidae, originally described by Pickard-Cambridge in 1905. The species belongs to the subfamily Metergininae, a group of tropical harvestmen characterized by often ornate dorsal ornamentation. It is one of several species in the genus Erginulus, which is distributed across Central and South America. The species has been documented through iNaturalist observations, indicating ongoing contemporary study.
Lime Felt Gall Mite
Eriophyes leiosoma is an eriophyid mite species in the family Eriophyidae. The genus Eriophyes contains species associated with plant galls and deformities, including economically significant pests of fruit crops. Some Eriophyes species, such as E. dimocarpi, are known to cause witches' broom disease in longan (Dimocarpus longan) through toxic saliva that induces curled, malformed shoot growth. E. leiosoma itself has been recorded in Scandinavia (Denmark, Norway, Sweden).
Scalebroom Bud Mite
Eriophyes lepidosparti is an eriophyid mite commonly known as the Scalebroom Bud Mite. As a member of the family Eriophyidae, it is a microscopic, worm-like mite that inhabits plant tissues. Eriophyid mites are known for inducing various plant deformities including galls, erinea, and bud proliferation through their feeding activities. The specific host associations and geographic distribution of this species require further documentation beyond the available records.
Eris is a genus of jumping spiders in the family Salticidae. These spiders are generally small in size and, while prone to biting, are not considered venomous to humans. The genus is established and accepted in arachnological taxonomy.
pirate spider
Ero canionis is a species of pirate spider in the family Mimetidae, described by Chamberlin and Ivie in 1935. The species is known from North America, with confirmed records in the United States and Canada. As a member of the pirate spider family, it is presumed to exhibit the characteristic predatory behavior of attacking other spiders, though specific details for this species remain limited.
curtain web spiders
Euagrus is a genus of curtain web spiders in the family Euagridae, first described by Anton Ausserer in 1875. The genus contains 22 species as of October 2025. It is morphologically similar to the genus Allothele, with several species historically transferred between the two genera. The name "Evagrus" occasionally appears in literature but represents a transcript error rather than a valid synonym.
Eustala californiensis is a species of orb-weaver spider in the family Araneidae. It is known from the United States and Mexico. Like other members of the genus Eustala, it constructs spiral wheel-shaped webs for prey capture. The species was described by Eugen von Keyserling in 1885.
dwarf spiders
Floricomus is a genus of dwarf spiders in the family Linyphiidae, first described by C. R. Crosby and S. C. Bishop in 1925. The genus is endemic to North America, with species recorded from the United States and Canada. As of 2019, it comprises thirteen described species. These spiders belong to the sheet-web building family Linyphiidae, though specific web architectures for Floricomus species remain poorly documented.
Floricomus plumalis is a species of sheet-web weaving spider in the family Linyphiidae, first described by Crosby in 1905. It belongs to a genus of small spiders whose members construct flat, horizontal webs in vegetation. The species has been recorded from both Canada and the United States, though specific details about its biology remain poorly documented.
Scarlet Sheetweb Weaver, Black-tailed Red Sheetweaver, Red Grass Spider
Florinda is a monotypic genus of dwarf spiders in the family Linyphiidae, containing only Florinda coccinea. This small spider is notable for its bright scarlet coloration with distinctive black markings, including a diagnostic black tubercle on the rear of the abdomen. The genus was established by Octavius Pickard-Cambridge in 1896.
false scorpions
Garypoidea is a superfamily of pseudoscorpions (order Pseudoscorpiones) established by Simon in 1879. It comprises seven families and is classified within the infraorder Iocheirata. Members are small, arachnid predators characterized by their scorpion-like pincers and flattened bodies, lacking the stinging tail of true scorpions.
Garypus is a genus of pseudoscorpions in the family Garypidae, comprising at least 20 described species. These arachnids are primarily restricted to seashore habitats, occupying supralittoral and littoral zones in tropical and subtropical regions. The genus was established by Ludwig Carl Christian Koch in 1873 and shows highest diversity in the Indo-West Pacific region. Species-level taxonomy remains incompletely resolved, with many species known from single localities.
Geolycosa fatifera is a burrowing wolf spider in the family Lycosidae, found in the United States. As a member of the genus Geolycosa, it spends the majority of its life in a deep burrow. The species was first described by Nicholas Marcellus Hentz in 1842. Like other Geolycosa species, it exhibits traits associated with fossorial (burrowing) existence, including stout front legs adapted for digging.
Gertschius agilis is a species of scorpion in the family Vaejovidae, described by Sissom and Stockwell in 1991. It is distributed across Middle and North America. As a member of the order Scorpiones, it possesses the characteristic segmented tail with terminal stinger and pedipalps modified into pincers. The specific epithet "agilis" suggests an association with agility or quick movement.
Gertschosa is a genus of ground spiders in the family Gnaphosidae, established by Norman I. Platnick and M. U. Shadab in 1981. The genus contains four species distributed across the Caribbean, Central America, and southern North America. Its members are nocturnal hunting spiders that do not construct webs for prey capture.
Dwarf Ground Long-jawed Spider
Glenognatha foxi is a species of long-jawed orb weaver spider in the family Tetragnathidae, commonly known as the Dwarf Ground Long-jawed Spider. It is distributed across a broad latitudinal range from Canada to Panama. The species belongs to a genus of small-bodied spiders characterized by elongated chelicerae and ground-dwelling habits, distinguishing them from the more web-associated Tetragnatha.
dwarf spiders
Glyphesis is a genus of dwarf spiders (Linyphiidae) established by Eugène Louis Simon in 1926. The genus contains seven described species distributed across North America, Europe, and Asia. Several species are considered rare, with limited known localities. The genus is taxonomically stable and accepted in major arachnological databases.
Gnaphosa borea is a ground spider species in the family Gnaphosidae with a Holarctic distribution. The species is found in boreal forest habitats across northern Eurasia and North America. It has been documented in Russia (Tuva, South Siberia), Alaska, Maine, and several Canadian provinces including Alberta, Saskatchewan, and Yukon. The species appears to be associated with post-fire conditions in boreal forests and is rarely collected in harvest-origin forest stands.
Gnaphosa sericata is a ground spider species in the family Gnaphosidae, first described by L. Koch in 1866. The species occurs across a broad geographic range spanning North America, Central America, and the Caribbean. Records indicate presence from the United States through Mexico, Guatemala, and Cuba, with additional documentation from Canada, Haiti, the Dominican Republic, and the Turks and Caicos Islands. As a member of Gnaphosidae, it belongs to a family characterized by active hunting behavior and the production of silk retreats rather than prey-capture webs.
A small scorpion species in the family Vaejovidae, originally described as Vaejovis glimmei in 1972 and later transferred to the genus Graemeloweus. The genus Graemeloweus was established in 2016 to accommodate several vaejovid species previously placed in Vaejovis. This species is known from a limited number of observations and specimens, primarily from western North America.
dwarf spider
Grammonota gentilis is a species of dwarf spider in the family Linyphiidae, first described by Nathan Banks in 1898. It belongs to a large family of small sheet-web weaving spiders commonly known as money spiders or dwarf spiders. The species has been recorded from North America, with specific observations from Alberta, Canada and the United States.
pale-footed patterned money spider
Grammonota pallipes is a dwarf spider (family Linyphiidae) first described by Banks in 1895. It belongs to a large genus of small sheet-web building spiders commonly known as money spiders. The species is known only from the United States, though specific details about its biology and ecology remain poorly documented.
Habronattus californicus is a species of jumping spider in the family Salticidae. It is native to western North America, occurring in California and the Baja California Peninsula in Mexico. Like other members of the genus Habronattus, males likely possess elaborate courtship displays involving visual and acoustic signals. The genus is known for having some of the most complex multimodal courtship behaviors among terrestrial invertebrates.
Habronattus cockerelli is a species of jumping spider in the family Salticidae, first described by Nathan Banks in 1901. The genus Habronattus is one of the largest genera of jumping spiders in North America, with approximately 100 species, most occurring in North America and the remainder in the neotropics. The highest diversity is found in the southwestern United States. Members of this genus are known for elaborate multimodal courtship displays involving both visual signals through modified leg structures and acoustic signals produced by drumming or tapping on substrates.
Habronattus kawini is a species of jumping spider in the family Salticidae. It was originally described as Pellenes kawini by Griswold in 1979 and later transferred to the genus Habronattus. The species is part of a large genus of small, ground-dwelling jumping spiders known for elaborate courtship displays. Like other Habronattus species, it is presumed to be a visual hunter with acute eyesight characteristic of salticids.
Habronattus pugillis is a species of jumping spider in the family Salticidae, described by Griswold in 1987. It belongs to a large genus of small, ground-dwelling spiders known for elaborate courtship displays. The species occurs in the southwestern United States and Mexico. Like other Habronattus species, males likely possess modified third legs used in visual courtship signaling, though specific details for this species remain poorly documented.
Habronattus tranquillus is a species of jumping spider in the family Salticidae. It occurs in the United States and Mexico. As a member of the large genus Habronattus, it shares the characteristic jumping spider traits of acute vision and active hunting behavior. The genus is known for complex multimodal courtship displays in males, combining visual signals with vibratory drumming.
Habronattus ustulatus is a species of jumping spider in the family Salticidae. It is found in the United States and Mexico. As a member of the genus Habronattus, it belongs to a diverse group of small, ground-dwelling jumping spiders known for elaborate male courtship displays.
Hadrobunus grandis is a harvestman (Opiliones) species found in the eastern and central United States. Adults are active in early summer. The species was first described by Thomas Say in 1821. It belongs to the family Sclerosomatidae, a diverse group of long-legged arachnids commonly encountered in temperate North American forests and woodlands.