Linyphiidae
Guides
Agnyphantes
Agnyphantes is a genus of dwarf spiders (family Linyphiidae) containing only two species: A. arboreus and A. expunctus. The genus was established by J. E. Hull in 1932. These spiders belong to the sheet-web weaving spiders, though specific details about their biology remain poorly documented.
Agnyphantes arboreus
Agnyphantes arboreus is a species of sheet-web weaver spider in the family Linyphiidae, first described by Emerton in 1915 under the name Bathyphantes arborea. It is a small spider native to western North America, with confirmed records from Alberta and British Columbia in Canada. Like other linyphiids, it constructs flat sheet webs to capture prey. The species epithet 'arboreus' suggests an association with trees or woody vegetation.
Agyneta
dwarf spiders, sheet weavers
Agyneta is a genus of dwarf spiders (family Linyphiidae) containing over 200 species distributed across multiple continents. First described by J. E. Hull in 1911, these small sheet-weaving spiders are characterized by distinct genital structures used for species identification. The genus has been documented from Europe, South America, and other regions, with new species continuing to be described.
Agyneta barrowsi
Agyneta barrowsi is a species of sheet weaver spider in the family Linyphiidae, described by Chamberlin & Ivie in 1944. It occurs in the United States and Canada. The genus Agyneta belongs to the large family of dwarf sheet weavers, which are characterized by their small size and flat, sheet-like webs.
Agyneta olivacea
Agyneta olivacea is a species of sheet-web spider (family Linyphiidae) described by James Henry Emerton in 1882. It has a Holarctic distribution, occurring across northern regions of North America and Eurasia. The species was originally described under the basionym Microneta olivacea. As a member of the sheet weaver family, it constructs flat, horizontal webs rather than aerial orb webs.
Agyneta semipallida
Agyneta semipallida is a species of sheet weaver spider in the family Linyphiidae. It was described from the United States in 1944. The species is known from limited records and has not been documented on iNaturalist. It was originally described as Meioneta semipallida before being transferred to Agyneta.
Allomengea
dwarf spiders
Allomengea is a genus of dwarf spiders in the family Linyphiidae, first described by Embrik Strand in 1912. The genus contains six species with a primarily Holarctic distribution, ranging from North America across Eurasia to East Asia. Species occur in diverse habitats including boreal and temperate regions, with some showing broad transcontinental ranges while others are restricted to specific regions such as the Korean Peninsula or China.
Aphileta
Aphileta is a genus of dwarf spiders (family Linyphiidae) established by J. E. Hull in 1920. The genus contains three recognized species found in North America: A. centrasiatica, A. microtarsa, and A. misera. GBIF records indicate the genus also occurs in Scandinavia (Denmark, Norway, Sweden).
Aphileta misera
Aphileta misera is a species of dwarf spider in the family Linyphiidae. It has a broad distribution spanning North America, Europe, and Russia from Siberia to the Far East. As a member of the sheet-web weaving spiders, it constructs small webs in low vegetation. The species was first described by O. Pickard-Cambridge in 1882.
Arcuphantes
Arcuphantes is a genus of dwarf spiders (Linyphiidae: Micronetinae) comprising 57 species distributed across Asia and North America. The genus was established by Chamberlin and Ivie in 1943, with A. fragilis designated as the type species. Species diversity is concentrated in Japan and Korea, with additional representatives in China, Mongolia, and North America. The genus is characterized by distinctive genital morphology, particularly elaborate epigynal scapes and male palpal structures.
Arcuphantes arcuatulus
Arcuphantes arcuatulus is a species of sheetweb spider in the family Linyphiidae. It was described by Roewer in 1942 and is known from the United States and Canada. Members of this family construct small, flat sheet webs to capture prey.
Bathyphantes
dwarf spiders, sheetweb weavers
Bathyphantes is a genus of dwarf spiders (family Linyphiidae) comprising approximately 57 species distributed across the Holarctic region, with additional species in South America, Africa, Asia, and Oceania. These small spiders construct sheet webs and are characterized by complex male pedipalps and female epigyna used for species identification. The genus was first described by Anton Menge in 1866. At least one species, Bathyphantes simillimus, exhibits a triennial life cycle potentially adapted to cooler environments.
Bathyphantes alascensis
Three-spined Shield Sheetweaver
Bathyphantes alascensis is a small sheetweb spider in the family Linyphiidae, commonly known as the Three-spined Shield Sheetweaver. The species occurs across northern North America from Alaska through Canada to the northern United States. Like other linyphiids, it constructs horizontal sheet webs, often with a retreat at the edge. The genus Bathyphantes is part of the diverse sheetweb spider assemblage, with males possessing complex pedipalps used in mating.
Bathyphantes alboventris
Notch-tipped Shield Sheetweaver
Bathyphantes alboventris is a small sheetweb spider in the family Linyphiidae, first described by Banks in 1892. It is known from the United States and Canada. The species belongs to a genus of sheetweb weavers characterized by specific male genitalia structures. Limited information exists on its natural history and ecology.
Bathyphantes brevipes
Grey Sheetweb Weaver
Bathyphantes brevipes is a species of sheetweb spider in the family Linyphiidae, commonly known as the Grey Sheetweb Weaver. It is a small arachnid found across northern North America, with records from the United States and Canada including Alberta, British Columbia, and Manitoba. As a member of the Linyphiidae family, it constructs flat sheet webs typically positioned close to the ground or substrate.
Bathyphantes brevis
Short Sheetweb Weaver
Bathyphantes brevis is a species of sheetweb spider in the family Linyphiidae, first described by Emerton in 1911. It is found in the United States and Canada. As a member of the Linyphiidae, it constructs flat, horizontal sheet webs. The species is part of the diverse genus Bathyphantes, which contains numerous small-bodied spiders.
Bathyphantes canadensis
Canada Sheetweb Weaver
Bathyphantes canadensis is a small sheetweb weaving spider in the family Linyphiidae, found across northern North America and eastern Russia. It is one of approximately 4,000 species in the sheetweb weaver family, characterized by their flat, horizontal web architecture. The species is rarely encountered by casual observers due to its small size and cryptic habits.
Bathyphantes keeni
Hump-headed Shield Sheetweaver
Bathyphantes keeni is a species of sheetweb spider in the family Linyphiidae. It occurs in Canada and the United States. The species is part of the diverse sheetweb weaver group, which constructs flat or dome-shaped webs rather than orb webs. Little specific information has been published on its biology.
Bathyphantes orica
Short Shield Sheetweaver
Bathyphantes orica is a species of sheetweb spider in the family Linyphiidae, commonly known as the Short Shield Sheetweaver. It was described by Ivie in 1969. The species is known from the United States and Canada, though specific details about its biology remain poorly documented. Like other members of the genus Bathyphantes, it constructs sheet-like webs rather than orb webs.
Bathyphantes weyeri
Wide Shield Sheetweaver
Bathyphantes weyeri is a species of sheetweb spider in the family Linyphiidae, first described by Emerton in 1875. It belongs to a genus of small spiders that construct flat, horizontal sheet webs often accompanied by a dome-shaped retreat. The species is known from the United States, though specific details about its biology and ecology remain poorly documented. Like other linyphiids, it is presumed to be a small-bodied spider that occupies ground-level or low vegetation habitats.
Besciva
Besciva is a genus of sheetweb weavers in the family Linyphiidae. The genus is known from at least one undescribed species ('n-sp') encountered in the northern reaches of Door County, Wisconsin, USA. Sheetweb weavers in this genus construct flat, convex, or concave webs depending on the species, with spiders hanging upside down to capture prey. Mature males cease web-spinning to seek mates.
Carcinocephalus
Carcinocephalus is a genus of dwarf spiders (Linyphiidae: Erigoninae) characterized by distinctive cephalic modifications. These minute sheet-web building spiders are among the smallest arachnids, typically measuring only a few millimeters in length. The genus name refers to the crab-like or projecting head structure found in males. Members of this genus construct flat, sheet-like webs and are generally associated with ground-level or low vegetation habitats.
Centromerus
dwarf spiders
Centromerus is a genus of dwarf spiders in the family Linyphiidae, containing approximately 88 species and two subspecies. The genus has a broad distribution spanning the Holarctic region, with species recorded across Europe, North America, Asia, and North Africa. Many species exhibit restricted geographic ranges, while a few such as C. sylvaticus have exceptionally wide distributions. The genus was established by Dahl in 1886.
Ceraticelus
dwarf spiders
Ceraticelus is a genus of dwarf spiders in the family Linyphiidae, subfamily Erigoninae. First described by Eugène Louis Simon in 1884, the genus currently contains approximately 34 species and two subspecies distributed primarily in North America, with some species occurring in Europe and Asia. The genus definition has been historically problematic due to superficial treatment of male palpal bulb morphology. Recent taxonomic work has clarified diagnostic characters through examination of the type species, C. fissiceps.
Ceraticelus artemisiae
A small dwarf spider (subfamily Erigoninae) described from southern California in 2009. Often found co-occurring with its probable sister species Ceraticelus phylax, with which it shares distinctive male palpal bulb morphology. The genus Ceraticelus is taxonomically problematic due to inadequate definition and superficial treatment of diagnostic characters.
Ceraticelus bulbosus
dwarf spider
Ceraticelus bulbosus is a species of dwarf spider in the family Linyphiidae. It has been recorded across a broad geographic range spanning North America and Eurasia, including the Netherlands, Germany, Poland, Finland, and Russia from Europe to the Far East. The species was first described by Emerton in 1882. As a member of the subfamily Erigoninae, it belongs to a diverse group of small spiders commonly known as dwarf or money spiders.
Ceraticelus crassiceps
Thick-headed Dwarf Weaver
Ceraticelus crassiceps is a dwarf spider in the family Linyphiidae, described by Chamberlin and Ivie in 1939. It belongs to the subfamily Erigoninae, commonly known as dwarf spiders or money spiders. The species occurs in North America, with records from the United States and Canada.
Ceraticelus emertoni
Ceraticelus emertoni is a species of dwarf spider in the family Linyphiidae, subfamily Erigoninae. It is known from the United States. As a member of the dwarf spiders, it is likely small-bodied and ground-dwelling or associated with low vegetation, though specific natural history details remain poorly documented.
Ceraticelus fissiceps
dwarf spider
Ceraticelus fissiceps is a species of dwarf spider in the family Linyphiidae. It serves as the type species for the genus Ceraticelus, and examination of its specimens has been used to establish a formal definition of the genus. The species is found in the United States and Canada, with records from multiple provinces across Canada including Alberta, British Columbia, and Manitoba. As a sheet-web weaving spider in the Linyphiidae family, it likely constructs small horizontal webs in vegetation.
Ceraticelus similis
dwarf spider
Ceraticelus similis is a species of dwarf spider in the family Linyphiidae, first described by Nathan Banks in 1892. It belongs to a diverse family of small spiders commonly known as sheet-web weavers or money spiders. The species is known from the United States and has been recorded in Alberta, Canada.
Ceratinella
dwarf spiders
Ceratinella is a genus of dwarf spiders in the family Linyphiidae, first described by James Henry Emerton in 1882. As of January 2026, the genus comprises 28 recognized species. Members are morphologically similar to the related genera Ceraticelus and Idionella, and taxonomic revisions affecting these groups are anticipated.
Ceratinops
Ceratinops is a genus of dwarf spiders in the family Linyphiidae, restricted to North America. First described by Nathan Banks in 1905, this genus contains small-bodied species that inhabit diverse terrestrial environments. Members of this genus are part of the sheet-web building spider fauna, though specific behavioral details remain poorly documented for most species.
Ceratinopsidis formosa
Ceratinopsidis formosa is a species of dwarf spider in the family Linyphiidae. It is the sole member of its genus, which was established by Bishop and Crosby in 1930. The species was originally described by Banks in 1892. Very little is known about its biology or ecology.
Ceratinopsis
Ceratinopsis is a genus of dwarf spiders (family Linyphiidae) containing approximately 44–46 accepted species. These spiders are small-bodied sheet-web weavers first described by James Henry Emerton in 1882. The genus belongs to the diverse assemblage of linyphiid spiders commonly known as money spiders or sheet-web weavers.
Ceratinopsis nigriceps
dwarf spider
Ceratinopsis nigriceps is a dwarf spider species in the family Linyphiidae, first described by Emerton in 1882. The species is recorded from the United States and Canada. Members of this family are generally small-bodied spiders that construct sheet webs or occupy ground layer habitats. Available information for this species is limited.
Chimoptesis n-sp
Chimoptesis n-sp is an undescribed sheetweb weaver spider in the family Linyphiidae, recorded from Door County, Wisconsin. The specimen was observed on June 24, 2019, during a nocturnal survey of building exteriors. Linyphiidae spiders construct flat, convex, or concave sheet webs and hang inverted beneath them to capture prey.
Collinsia plumosa
dwarf spider
Collinsia plumosa is a species of dwarf spider in the family Linyphiidae, first described by James Henry Emerton in 1882. It belongs to a diverse family of small spiders commonly known as sheet-web weavers or money spiders. The species has been recorded from multiple locations across the United States and Canada, though specific details about its biology remain limited in the available literature.
Coreorgonal bicornis
Coreorgonal bicornis is a species of sheet-web weaver spider in the family Linyphiidae, first described by Emerton in 1923. The genus Coreorgonal belongs to a large family of small spiders commonly known as money spiders or sheet-web weavers, which construct horizontal sheet webs often with a retreat at one edge. The specific epithet "bicornis" (Latin for "two-horned") likely refers to a morphological feature of this species, though detailed descriptions of its appearance remain limited in available literature.
Diastema n-sp
Diastema n-sp is a sheetweb weaver spider in the family Linyphiidae, recorded from the exterior of a woodshed in northern Door County, Wisconsin during a nocturnal survey. The specimen was an unidentified male observed on June 24, 2019, in a cool, wet forested area on the shore of Lake Michigan. No further details about this particular species' biology are available from this record.
Dictyonia
Dictyonia n-sp is an undescribed species of sheetweb weaver spider (family Linyphiidae) documented from Door County, Wisconsin, USA. It was recorded during a nocturnal survey of building exteriors in a forested lakeshore habitat. As a member of Linyphiidae, it constructs a flat, sheet-like web and hunts by hanging inverted on the web surface.
Dicymbium
dwarf spiders
Dicymbium is a genus of dwarf spiders in the family Linyphiidae, established by Anton Menge in 1868. The genus name refers to the distinctive male palpal morphology, specifically a cup-shaped projection on the palpal tibia that surrounds the cymbium dorsally. The genus contains eight species and one subspecies distributed across the Northern Hemisphere, including Europe, Asia, and North America.
Dicymbium nigrum
Black Dicymbium
Dicymbium nigrum is a dwarf spider in the family Linyphiidae, first described by John Blackwall in 1834. The species exhibits a wide Palearctic distribution spanning Europe, Turkey, the Caucasus, Russia, Central Asia, and China. Two subspecies are recognized: the nominate form D. n. nigrum and D. n. brevisetosum described by Locket in 1962. As a member of the sheet-web weavers, this species constructs characteristic horizontal webs for prey capture.
Diplocentria
dwarf spiders
Diplocentria is a genus of dwarf spiders in the family Linyphiidae, first described by J. E. Hull in 1911. The genus contains eight recognized species distributed across North America, Europe, and Asia. These small spiders are part of the sheet-web weaving guild within their family.
Diplocentria rectangulata
Diplocentria rectangulata is a sheet web spider in the family Linyphiidae, first described by Emerton in 1915. The species occurs across northern regions of the Northern Hemisphere, including North America and Eurasia. As with other linyphiids, it constructs horizontal sheet webs to capture prey. It is among the smaller spiders, consistent with the dwarf spider morphology typical of this family.
Diplocephalus
Diplocephalus is a genus of dwarf spiders in the family Linyphiidae, subfamily Erigoninae, first described by Philipp Bertkau in 1883. The genus contains 49 species and one subspecies with a wide geographic distribution. Males of at least some species possess specialized glandular head structures that produce secretions transferred to females during courtship to trigger copulation. The genus is part of the diverse sheet-weaving spider fauna.
Dismodicus
dwarf spiders
Dismodicus is a genus of dwarf spiders in the family Linyphiidae, first described by Eugène Louis Simon in 1884. The genus contains six species distributed across the Northern Hemisphere, with centers of diversity in Europe and North America. These spiders are part of the sheet-web weaving guild, constructing horizontal webs close to the ground.
Drapetisca
sheetweb weavers
Drapetisca is a genus of dwarf sheetweb spiders in the family Linyphiidae, first described by Anton Menge in 1866. Members are exceptionally small, with females measuring 4–5 mm and males 3–4 mm in body length. These spiders are highly specialized tree trunk dwellers that construct minimal, nearly invisible sheet webs. The genus currently comprises approximately 7 species distributed across the Holarctic region, including North America, Europe, Asia, and Japan.
Entelecara
dwarf spiders
Entelecara is a genus of dwarf spiders (family Linyphiidae) described by Eugène Louis Simon in 1884. The genus contains 21 described species distributed across North America, Europe, Russia, Central Asia, China, Korea, Japan, and North Africa. Species within this genus are small-bodied spiders, consistent with the dwarf spider morphology characteristic of Linyphiidae. The type species is Entelecara acuminata.
Epiceraticelus
Epiceraticelus is a genus of dwarf spiders (family Linyphiidae) endemic to North America, containing two described species. The genus was established in 1931 with E. fluvialis from the Midwestern and Eastern United States. E. mandyae was added in 2019 from the Southeastern United States. Males of E. mandyae possess a distinctive curved proboscis extending from below the eyes.
Eridantes
dwarf spiders
Eridantes is a genus of dwarf spiders (family Linyphiidae, subfamily Erigoninae) established by Crosby & Bishop in 1933. The genus contains three described species: E. diodontos, E. erigonoides, and E. utibilis. It is distinguished from similar genera by two proposed synapomorphies: the mesal (rather than ectal) position of the paracymbium, and the broadly divided dorsal and ventral sclerites of the largely membranous radix. Species-level identification relies on detailed morphological characters including cephalic lobe height, prosomal pit position, male palpal tibia form, and the convolution of the m-shaped carinae of the female epigynum.
Erigone
dwarf spiders
Erigone is a genus of dwarf spiders in the family Linyphiidae, first described by Jean Victoire Audouin in 1826. Members of this genus are small-bodied spiders characterized by distinctive teeth bordering the carapace. They are carnivorous, preying on small insects. The genus is well-represented in temperate regions with numerous described species.
Erigone blaesa
Erigone blaesa is a dwarf spider species in the family Linyphiidae, first described by Crosby & Bishop in 1928. It is a small sheet-web spider distributed across northern North America. The species has been documented in multiple Canadian provinces and the United States.
Erigone capra
Erigone capra is a species of sheet-web weaving spider in the family Linyphiidae, first described by Eugène Simon in 1884. The species is known from North America and Eurasia, with records spanning from western Canada to Russia. As a member of the dwarf spider family, it constructs flat, horizontal webs close to the ground in vegetation. Taxonomic status varies between sources: Catalogue of Life treats it as accepted, while GBIF lists it as a synonym of Erigone dentigera.
Erigoninae
dwarf spiders, money spiders
Erigoninae is the largest subfamily of Linyphiidae (sheet-web weavers), itself the second largest spider family. These minute spiders are commonly called dwarf spiders in the United States and money spiders in England. The subfamily contains over 2,000 described species, making it the most numerous group within the sheet-web weavers. Many species inhabit leaf litter and construct small sheet webs, while others occupy diverse terrestrial habitats from coastal dunes to alpine timberlines.
Estrandia grandaeva
Estrandia grandaeva is a small sheet-web spider in the family Linyphiidae, first described by Keyserling in 1886. It has a broad circumboreal distribution spanning northern North America, Europe, and Asia. Like other linyphiids, it constructs flat, horizontal sheet webs with a retreat area and an overlying tangle of threads to knock down prey. The species is found in cool, moist habitats across boreal and montane regions.
Floricomus
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.
Florinda
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.
Florinda coccinea
Black-tailed Red Sheetweaver, Scarlet Sheetweb Weaver, Red Grass Spider
Florinda coccinea is a small, vividly colored sheetweb-weaving spider in the family Linyphiidae. It is the sole species in its genus. The spider is notable for its bright red body with black accents, particularly a distinctive black tubercle on the rear of the abdomen. Despite its striking coloration, it is rarely observed due to its minute size (3-3.5 mm body length) and the near-invisibility of its fine silk webs. The species occurs in grasslands, lawns, and agricultural fields across the southeastern United States, with records extending north to New England and west to Kansas, plus Mexico and the West Indies.
Frederickus
Frederickus is a genus of dwarf spiders (family Linyphiidae) endemic to North America. It was established in 2008 and contains two described species: F. coylei and F. wilburi. Both species are found in Canada and the United States. The genus belongs to the sheet-web weaving spiders, though specific web-building behaviors for Frederickus remain undocumented.
Frederickus coylei
Frederickus coylei is a species of dwarf spider in the family Linyphiidae, a large family of small spiders commonly known as sheet-web weavers or money spiders. The species was described in 2008 and is known from the United States and Canada. As a member of Linyphiidae, it likely constructs sheet webs to capture prey, though specific behavioral observations for this species are limited.
Frontinella huachuca
A small sheetweb spider species in the family Linyphiidae, described from the Huachuca Mountains of southeastern Arizona. The species constructs the distinctive "bowl and doily" web architecture shared with its congener F. communis, consisting of an inverted bowl-shaped sheet suspended above a flat doily-like platform. Known from the southwestern United States and Mexico, with two recognized subspecies: F. h. huachuca and F. h. benevola.
Glyphesis
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.
Gnathonargus unicorn
Unicorn spider
Gnathonargus unicorn is a small sheet-web weaving spider belonging to the family Linyphiidae. It is the sole species in its genus, which was established by Bishop & Crosby in 1935. The species was originally described by Banks in 1892 and is known from the United States. As with many linyphiid spiders, it is poorly studied and little is known of its natural history.
Gonatium
Gonatium is a genus of dwarf spiders (family Linyphiidae) comprising twenty species as of 2025. The genus was established by Anton Menge in 1868 and exhibits a broad geographic distribution spanning Europe, Asia, North Africa, and North America. Species within this genus occupy diverse habitats from Mediterranean regions to boreal and montane environments.
Goneatara
dwarf spiders
Goneatara is a genus of dwarf spiders in the family Linyphiidae, first described by S.C. Bishop and C.R. Crosby in 1935. The genus contains four recognized species, all endemic to the United States. These spiders are small-bodied members of the sheet-web weaving family, though specific ecological details remain poorly documented. The genus is rarely encountered in scientific literature beyond taxonomic descriptions.
Grammonota capitata
Grammonota capitata is a species of dwarf spider in the family Linyphiidae, first described by Emerton in 1924. It belongs to a large family of small sheet-web weaving spiders commonly known as money spiders or sheet-web weavers. The species has been recorded from the United States and parts of Canada including Alberta, Manitoba, and Ontario.
Grammonota maculata
dwarf spider
Grammonota maculata is a species of dwarf spider in the family Linyphiidae, first described by Nathan Banks in 1896. It belongs to a large family of small spiders commonly known as sheet-web weavers or money spiders. The species has been documented in two disjunct regions: the United States and Costa Rica. Like other linyphiids, it is likely associated with ground-level vegetation where it constructs flat sheet webs.
Grammonota texana
Grammonota texana is a dwarf spider in the family Linyphiidae, first described by Banks in 1899. It is known from the United States. Like other members of Linyphiidae, it is a small-bodied spider, though specific morphological details and natural history remain poorly documented in the literature.
Grammonota vittata
Grammonota vittata is a species of dwarf spider in the family Linyphiidae, first described by Barrows in 1919. The species is known from the United States, with additional records from several Canadian provinces including Alberta, British Columbia, and Manitoba. As a member of the sheet-web weaving spiders, it belongs to one of the most species-rich spider families. Very little is known about its specific biology or ecology.
Helophora
dwarf spiders
Helophora is a genus of dwarf spiders (family Linyphiidae) first described by Anton Menge in 1866. The genus contains five species with a disjunct distribution spanning North America, Europe, and East Asia. Members of this genus are small-bodied sheet-web weavers, characteristic of their family.
Helophora insignis
Helophora insignis is a sheetweb spider in the family Linyphiidae. It has been documented across a broad geographic range spanning North America, Europe, the Caucasus, Russia (from European regions to the Far East), Kyrgyzstan, and China. The species belongs to a genus characterized by the construction of horizontal sheet webs, a trait that distinguishes Linyphiidae from other spider families.
Helophora reducta
Helophora reducta is a species of sheetweb spider in the family Linyphiidae, first described by Keyserling in 1886. It is a small-bodied arachnid that constructs flat, horizontal sheet webs to capture prey. The species is known from the United States, though detailed ecological and behavioral studies remain limited.
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.
Hybauchenidium
dwarf spiders
Hybauchenidium is a genus of dwarf spiders in the family Linyphiidae, first described by Å. Holm in 1973. The genus contains four species distributed across high-latitude regions of the Northern Hemisphere, including boreal and arctic areas of North America, Europe, and Asia. Species in this genus are small-bodied spiders characteristic of the sheet-web building Linyphiidae.
Hypselistes florens
Peatland Sheetweb Weaver
Hypselistes florens is a dwarf spider in the family Linyphiidae, commonly known as the Peatland Sheetweb Weaver. It is found across northern North America, with records from the United States and Canada. The species includes two subspecies: the nominate H. f. florens and H. f. bulbiceps. It is one of the more frequently observed sheetweb weavers, with substantial observational data available.
Idionella
A genus of North American dwarf spiders (family Linyphiidae) comprising eight described species and one subspecies. First described by Nathan Banks in 1893, with members distributed across the United States and Mexico. The genus belongs to the sheet-web weaving spider family, though specific web architecture and behavioral details remain poorly documented.
Ipnista n-sp
Ipnista n-sp is an unidentified species of sheetweb weaver spider in the family Linyphiidae, documented from a single male specimen observed in Door County, Wisconsin. The spider was found during a nocturnal survey of building exteriors in a forested lakeshore habitat. As an unidentified male, it represents an undescribed or unrecognized species within this diverse family of small web-building spiders.
Islandiana
dwarf spiders, money spiders
Islandiana is a genus of minute sheet-web spiders (family Linyphiidae, subfamily Erigoninae) first described by J. Braendegaard in 1932. The genus currently comprises 15 described species, with the majority distributed across North America. Several species exhibit obligate cave-dwelling habits, making the genus notable among subterranean spider faunas. The most recently described species, Islandiana lewisi, was identified in 2018 from a single cave in southern Indiana after a 30-year gap in new species descriptions for the genus.
Islandiana flaveola
Unequal Whiskered Money Spider
Islandiana flaveola is a dwarf spider species in the family Linyphiidae, commonly known as sheet-web weavers or money spiders. First described by Banks in 1892, this species is distributed across the United States and Canada. Like other members of its genus, it constructs flat, sheet-like webs rather than the more familiar orb webs. The species is one of at least fifteen recognized species in the genus Islandiana.
Kaestneria
dwarf spiders
Kaestneria is a genus of dwarf spiders in the family Linyphiidae, first described by H. Wiehle in 1956. The genus contains eight species distributed across the Holarctic region and parts of Southeast Asia. Members are small-bodied spiders characteristic of the sheet-web building linyphiids.
Kaestneria pullata
Bog Sheet-web Weaver
Kaestneria pullata is a sheetweb spider in the family Linyphiidae, commonly known as the Bog Sheet-web Weaver. It has been documented across a broad geographic range spanning North America, Europe, and Asia, including Russia from European regions to the Far East, as well as China, Mongolia, and Japan. The species is one of approximately 4,600 described species in Linyphiidae, the second largest family of spiders.
Lepthyphantes
dwarf spiders
Lepthyphantes is a genus of dwarf spiders in the family Linyphiidae, containing 144 species and one subspecies as of October 2025. Species in this genus are found across Africa, Asia, Europe, and North America. The genus is notable for its members' adaptations to ephemeral and agricultural habitats, with documented life history strategies emphasizing high reproductive rates and dispersal capabilities.
Linyphantes pualla
Linyphantes pualla is a species of sheetweb spider in the family Linyphiidae, described by Chamberlin & Ivie in 1942. It is distributed across the United States and Canada. As a member of Linyphiidae, it constructs sheet webs for prey capture. The species has been documented in 21 iNaturalist observations, indicating it is encountered infrequently in the field.
Linyphantes victoria
Linyphantes victoria is a species of sheetweb spider in the family Linyphiidae, first described by Chamberlin & Ivie in 1942. It belongs to a family commonly known as money spiders or sheetweb weavers, characterized by their small size and construction of flat sheet webs often with a dome or tangle above. The species is documented from Canada, though specific details about its biology remain limited in published literature.
Linyphia rita
Linyphia rita is a species of sheetweb spider in the family Linyphiidae, described by Gertsch in 1951. It belongs to a genus known for constructing horizontal sheet webs, often with a dome or tangle above. The species is known only from the United States, though specific details about its biology, habitat preferences, and precise distribution remain poorly documented in the available literature.
Maro
Maro is a genus of dwarf spiders in the family Linyphiidae (sheet-web weavers), first described by Octavius Pickard-Cambridge in 1907. These small arachnids belong to the diverse group of linyphiid spiders, which are among the most species-rich spider families globally. The genus is known from limited records in northern Europe.
Maso sundevalli
Maso sundevalli is a species of sheet-web weaving spider in the family Linyphiidae, first described by Westring in 1851. Originally placed in the genus Erigone, it was later transferred to Maso. The species has a broad distribution across the Northern Hemisphere, including Europe, Asia, and North America. Like other linyphiids, it constructs flat sheet webs with a retreat and captures small flying insects.
Masoncus
Masoncus is a genus of dwarf spiders in the family Linyphiidae, first described by Ralph Vary Chamberlin in 1949. The genus contains four species distributed in Canada and the United States. One species, Masoncus pogonophilus, has been documented living in nests of the ant Pogonomyrmex badius, where it feeds on springtails. The genus is part of the diverse sheet-web weaving spider family.
Mecynargus borealis
Mecynargus borealis is a sheet-web weaving spider in the family Linyphiidae, first described by Jackson in 1930. The species has a Holarctic distribution, occurring in northern Europe, Russia, and North America including Canada and Svalbard. As a linyphiid spider, it constructs flat sheet webs with a retreat for capturing small flying and crawling prey.
Megalepthyphantes
Megalepthyphantes is a genus of dwarf spiders (family Linyphiidae) established by J. Wunderlich in 1994. The genus comprises seventeen described species distributed across Africa, Europe, and Asia. Its type species is Megalepthyphantes nebulosus (Sundevall, 1830), originally described under a different genus. The genus shows a notable concentration of species in the Mediterranean region and Central Asia.
Megalepthyphantes nebulosus
Megalepthyphantes nebulosus is a species of sheetweb spider in the family Linyphiidae. It is one of the more widely distributed linyphiid species, occurring across North America and Eurasia. The species was first described by Sundevall in 1830. Like other members of its family, it constructs sheet webs for prey capture. The specific epithet 'nebulosus' refers to the cloudy or nebulous appearance, likely describing coloration or pattern.
Mermessus albulus
Mermessus albulus is a species of sheet-web weaving spider in the family Linyphiidae, first described by Zorsch and Crosby in 1934. It belongs to a genus that has become notable in recent research as a model system for studying heritable bacterial symbionts and their effects on host reproduction. Related species in the genus, such as Mermessus fradeorum, host complex symbiont communities including Rickettsiella, Wolbachia, and Tisiphia, which can induce feminization in genetic males. The specific biology of M. albulus itself remains poorly documented in published literature.
Mermessus bryantae
dwarf spider
Mermessus bryantae is a species of dwarf spider in the family Linyphiidae, first described by Ivie & Barrows in 1935. Originally described as Eperigone bryantae, this species has a broad native distribution across North America, Cuba, and Venezuela, and has been introduced to the Azores archipelago. As a member of the Linyphiidae, it belongs to one of the most species-rich spider families, commonly known as sheet-web weavers or money spiders. The genus Mermessus is part of an emerging research system for studying heritable bacterial symbionts in spiders.
Mermessus index
Mermessus index is a species of sheet-web weaving spider in the family Linyphiidae, first described by Emerton in 1914. It belongs to a genus of small spiders commonly known as dwarf spiders or money spiders. The species is native to North America and has been recorded in both the United States and Canada. Like other members of Linyphiidae, it constructs horizontal sheet webs to capture prey.
Mermessus maculatus
dwarf spider
Mermessus maculatus is a dwarf spider in the family Linyphiidae, first described by Banks in 1892. The species exhibits a broad Nearctic distribution spanning from Canada to Guatemala, with additional records from the Commander Islands in Russia. As a member of the sheet-web weaving spiders, it belongs to a large family of small-bodied arachnids characterized by their distinctive web architecture.
Mermessus tridentatus
dwarf spider
Mermessus tridentatus is a species of dwarf spider in the family Linyphiidae, described by American arachnologist James Henry Emerton in 1882. It is a small sheet-web weaving spider with a documented distribution across the United States, Canada, and Puerto Rico. The species belongs to a genus that has become notable in recent research as a model system for studying heritable bacterial symbiont communities in spiders.
Mermessus trilobatus
Trilobate Dwarf Weaver
Mermessus trilobatus is a dwarf spider in the family Linyphiidae, native to North America and introduced to Europe and the Azores since the late 1970s. It has become the most invasive spider in Europe, expanding across multiple countries within fifty years. Unlike most invasive spiders in Europe, it occurs primarily in agricultural and semi-natural open habitats rather than buildings. First described by James Henry Emerton in 1882.
Micrargus
dwarf spiders
Micrargus is a genus of dwarf spiders (family Linyphiidae) described by Friedrich Dahl in 1886. The genus contains seventeen recognized species distributed across Europe, Asia, North America, and Africa. Several species form a distinct species group centered on M. herbigradus, characterized by specific male palpal and female epigynal structures. The genus exhibits considerable habitat flexibility, with species ranging from lowland forests to alpine meadows and caves.
Micrargus longitarsus
dwarf spider
Micrargus longitarsus is a dwarf spider in the family Linyphiidae, first described by James Henry Emerton in 1882. It is a small-bodied arachnid native to North America. The species has been documented in the United States and Canada, with specific records from Alberta and Ontario. Knowledge of its biology remains limited due to its small size and cryptic habits.
Microlinyphia
platform spider
Microlinyphia is a genus of dwarf spiders in the family Linyphiidae, first described by U. Gerhardt in 1928. The genus includes thirteen species and one subspecies as of October 2025. Members are commonly known as "platform spiders" due to their distinctive sheet-web architecture. Males possess a notable circular filament called an embolus on the pedipalp, a key diagnostic feature.
Microlinyphia dana
Dana Sheet-web Micro-weaver
Microlinyphia dana is a small sheetweb spider in the family Linyphiidae, commonly known as the Dana Sheet-web Micro-weaver. It constructs flat, horizontal sheet webs typically positioned close to the ground or vegetation. The species is documented from the United States and Canada, though detailed natural history information remains limited.
Microlinyphia mandibulata mandibulata
Microlinyphia mandibulata mandibulata is a subspecies of sheet-web weaving spider in the family Linyphiidae. Members of this genus are commonly known as "platform spiders" for their flat, sheet-like webs built close to the ground. Males are distinguished by a circular filament called the embolus that extends from the pedipalp. This subspecies has been documented from the United States.
Microlinyphia mandibulata punctata
Microlinyphia mandibulata punctata is a subspecies of sheet-web weaving spider in the family Linyphiidae. It was described by Chamberlin and Ivie in 1943. The genus Microlinyphia is known for the distinctive embolus structure in males—a circular filament that serves as the sperm delivery channel. Members of this genus construct flat, sheet-like webs close to the ground in grassy habitats.
Microlinyphia pusilla
Platform spider
Microlinyphia pusilla is a small sheet-web spider in the family Linyphiidae, characterized by strong sexual dimorphism and a distinctive hammock-shaped web built close to the ground in vegetation. Males actively wander in search of mates during autumn, while females and immature males remain on their webs. The species has a Holarctic distribution across North America and Eurasia.
Microneta
Microneta is a genus of dwarf spiders (family Linyphiidae) established by Anton Menge in 1869. The genus contains eleven described species distributed across North America, Europe, South America, and parts of Asia. One species, Microneta viaria, has an exceptionally broad distribution spanning multiple continents. Most species have more restricted ranges, with several endemic to specific regions such as Sweden, Peru, or Mexico.
Mythoplastoides
dwarf spiders
Mythoplastoides is a genus of dwarf spiders in the family Linyphiidae, first described by C. R. Crosby and S. C. Bishop in 1933. The genus contains two species, both restricted to the United States: M. erectus and M. exiguus (the type species). As members of Linyphiidae, these spiders are small-bodied and build sheet webs. The genus is poorly documented in scientific literature, with minimal ecological or behavioral data available.
Mythoplastoides exiguus
Mythoplastoides exiguus is a dwarf spider species in the family Linyphiidae, first described by Nathan Banks in 1892. It is known from the United States. As a member of the sheet-web weaving spiders, it belongs to one of the most species-rich spider families globally, though specific information about this particular species remains limited.
Neriene
Neriene is a genus of sheet-web weaving spiders (family Linyphiidae) first described by John Blackwall in 1833. As of 2025, the genus contains approximately 62 species distributed across Africa, Asia, Europe, North America, and Greenland. These spiders construct distinctive sheet webs—horizontal platforms of silk often accompanied by a dome or bowl-shaped structure above. Species in this genus are small-bodied, with mature females typically measuring only a few millimeters. The genus has been subject to behavioral research, particularly regarding mating plug function in species such as N. emphana.
Neriene clathrata
Latticed Sheet-web Weaver
Neriene clathrata is a sheetweb spider in the family Linyphiidae, commonly known as the Latticed Sheet-web Weaver. The species has an exceptionally wide geographic distribution spanning the Holarctic region, occurring across North America, Europe, North Africa, the Caucasus, Russia (from European to Far East), China, Korea, and Japan. Despite its broad range, detailed biological information remains limited. As a member of the Linyphiidae, it constructs sheet webs rather than orb webs.
Neriene digna
Neriene digna is a sheetweb spider in the family Linyphiidae, a large group commonly known as money spiders or sheetweb weavers. The species was originally described as Linyphia digna by Keyserling in 1886. It is recorded from the United States and Canada, though specific details about its biology and ecology remain poorly documented in the scientific literature. Like other members of the genus Neriene, it constructs flat sheet webs with a dome-shaped retreat.
Neriene radiata
Filmy Dome Spider
Neriene radiata, commonly known as the filmy dome spider, is a sheet-weaving spider in the family Linyphiidae with a Holarctic distribution spanning North America, Europe, and Asia. It constructs a distinctive dome-shaped web of fine silk, hanging upside-down beneath it to capture prey. The species is notable for its delicate web architecture and has been frequently observed in natural history studies.
Neriene variabilis
Neriene variabilis is a species of sheetweb spider in the family Linyphiidae, first described by Nathan Banks in 1892. It is known from the United States. As a member of the Linyphiidae, it constructs sheet webs—flat or dome-shaped silk structures used for prey capture. The genus Neriene includes multiple species distributed across North America and Eurasia.
Oedothorax
dwarf spiders
Oedothorax is a genus of dwarf spiders in the family Linyphiidae, subfamily Erigoninae, first described in 1883. The genus comprises approximately 39 species distributed across Europe, Asia, North America, and Africa. These spiders are characterized by their small size, typically measuring only about 2 mm in total body length. Males of certain species, such as O. trilobatus, exhibit distinctive cephalothoracic modifications including tumor-like swellings or horn-like extensions. The genus has gained scientific attention due to O. gibbosus hosting up to five different bacterial endosymbionts simultaneously, representing a unique system for studying host-endosymbiont interactions.
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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dwarf spiders
Oreonetides is a genus of dwarf spiders in the family Linyphiidae, first described by Embrik Strand in 1901. The genus contains 17 described species distributed across the Northern Hemisphere, with records from North America, Europe, Russia, and East Asia. Species occupy diverse habitats ranging from boreal and alpine regions to temperate forests. The type species, Oreonetides vaginatus, has the broadest distribution, spanning from North America across Eurasia to Japan.
Oreonetides vaginatus
Undergrowth Sheet-web Weaver
Oreonetides vaginatus is a small sheet-web weaving spider in the family Linyphiidae. It has been documented across a broad Holarctic distribution spanning North America, Europe, and Asia. The species inhabits undergrowth and ground-level vegetation, constructing characteristic sheet webs. Despite its wide geographic range, detailed natural history information remains limited.
Ostearius
Ostearius is a genus of dwarf spiders (family Linyphiidae) established by J. E. Hull in 1911. The genus contains two described species: O. melanopygius and O. muticus. These spiders have been recorded across a broad geographic range including Europe, Africa, Asia, and Oceania.
Pityohyphantes
hammock spiders, pine weavers
Pityohyphantes is a genus of sheetweb weavers (family Linyphiidae) commonly known as hammock spiders, named for their slightly convex sheet-like webs suspended by a maze of threads above. The genus name derives from Greek 'pitys' (pine) and 'hyphantes' (weaver), reflecting their frequent association with coniferous forests. Mature females measure approximately 5–7 mm in body length, with males slightly smaller. The genus contains at least 16 species distributed across Europe and North America, with most North American species occurring in western and northern coniferous forests.
Pityohyphantes minidoka
Pityohyphantes minidoka is a sheetweb spider in the family Linyphiidae, described by Chamberlin and Ivie in 1943. The genus name derives from Greek meaning 'pine weaver,' reflecting the typical habitat association of related species. As a member of the hammock spider group, it constructs a distinctive web architecture. The species is known from the United States, with records from Idaho and potentially broader western North American distribution.
Pityohyphantes rubrofasciatus
Hammock spider
Pityohyphantes rubrofasciatus is a species of sheetweb spider in the family Linyphiidae, commonly known as hammock spiders. The genus name derives from Greek meaning "pine weaver," though species occur in both coniferous and hardwood forests. The species constructs flat or slightly convex sheet webs suspended in foliage, typically well above ground level. It occurs across northern North America in the United States and Canada.
Pityohyphantes subarcticus
Taiga Sheetweb Weaver
Pityohyphantes subarcticus is a species of sheetweb weaver spider in the family Linyphiidae, commonly known as the Taiga Sheetweb Weaver. It occurs in boreal and subarctic regions of western Canada and Alaska. As a member of the genus Pityohyphantes, it constructs characteristic hammock-shaped webs suspended in vegetation. The species was described by Chamberlin and Ivie in 1943.
Pityohyphantes tacoma
Pityohyphantes tacoma is a species of sheetweb spider in the family Linyphiidae. It belongs to the genus Pityohyphantes, commonly known as hammock spiders. The species was described by Chamberlin and Ivie in 1942. Very little specific information is available about this particular species beyond its taxonomic classification and geographic occurrence in the United States.
Pocadicnemis pumila
dwarf spider
Pocadicnemis pumila is a species of dwarf spider in the family Linyphiidae, first described by John Blackwall in 1841. It has a notably wide distribution spanning multiple continents, including North America, Europe, Turkey, the Caucasus, Russia (from European Russia to the Far East), Iran, and Japan. The species belongs to a family commonly known as sheet-web weavers or money spiders, though specific behavioral details for this species remain poorly documented.
Poeciloneta
Poeciloneta is a genus of sheet web spiders (family Linyphiidae) established by Kulczyński in 1894, with Neriene variegata as the type species. The genus contains approximately 15 species distributed across the Holarctic region, including North America, Europe, Russia, and China. Most species are small-bodied spiders that construct flat sheet webs. The genus has not undergone modern taxonomic revision.
Poeciloneta lyrica
Poeciloneta lyrica is a species of sheetweb spider in the family Linyphiidae, first described by Zorsch in 1937. It belongs to a diverse family of small spiders known for constructing flat, sheet-like webs. The species has been recorded in North America, with confirmed observations in Alberta, Canada. Available information on this species remains limited.
Praestigia
Praestigia is a genus of sheet-weaving spiders (family Linyphiidae) described by Alfred Frank Millidge in 1954. The genus is distinguished by a unique male cephalic projection bearing a detachable cap composed of interconnected fibers bound with a waxy substance. Eight species are recognized, distributed across boreal and arctic regions of the Northern Hemisphere. The etymology combines Latin 'prae' (before/in front) and Greek 'stigios' (awl), referencing this distinctive projection.
Praestigia kulczynskii
Kulczynski's Dwarf Weaver
Praestigia kulczynskii is a dwarf spider in the family Linyphiidae, described by Eskov in 1979. The species has a transcontinental distribution spanning the Palearctic and Nearctic regions, with records from Russia, Japan, and Canada. As a member of the sheet-web weavers, it belongs to one of the most species-rich spider families, though specific ecological details for this species remain poorly documented.
Satilatlas marxi
Satilatlas marxi is a species of sheet-web weaving spider in the family Linyphiidae, described by Keyserling in 1886. It is a Holarctic species with documented occurrences in Alaska, Canada (Alberta, British Columbia, Manitoba), and South Siberia, Russia. The genus Satilatlas belongs to the diverse dwarf spider family, whose members construct horizontal sheet webs to capture prey. Very little is known about the specific biology of this species.
Scotinotylus pallidus
Scotinotylus pallidus is a species of sheet web spider in the family Linyphiidae. It was first described by James Henry Emerton in 1882. The species is known from Canada and the United States, with records from Alberta, Manitoba, and Ontario in Canada. Like other linyphiids, it constructs horizontal sheet webs to capture prey. The specific epithet 'pallidus' refers to its pale coloration.
Scylaceus
Scylaceus is a genus of sheet-weaving spiders in the family Linyphiidae, first described by Bishop and Crosby in 1938. The genus contains two described species: S. pallidus and S. selma. Both species are found in Canada and the United States. Members of this genus are small spiders that construct flat, horizontal sheet webs.
Sisicottus quoylei
Sisicottus quoylei is a species of dwarf spider described by Miller in 1999. It belongs to the family Linyphiidae, one of the largest families of spiders, commonly known as sheet-web weavers or money spiders. The species has been documented in North America.
Sisicus
Sisicus is a genus of sheet web spiders (family Linyphiidae) established in 1938. The genus contains three described species distributed across northern temperate regions including North America, Europe, Siberia, and East Asia. These spiders construct horizontal sheet webs to capture prey.
Souessa spinifera
Souessa spinifera is a sheet web weaving spider and the sole member of the monotypic genus Souessa. First described by O. Pickard-Cambridge in 1874 and later placed in its current genus by Crosby & Bishop in 1936, this small arachnid belongs to the dwarf spider family Linyphiidae. It has been documented only from the United States, with records from multiple states.
Spirembolus
Spirembolus is a genus of sheet web spiders in the family Linyphiidae, first described by Ralph Vary Chamberlin in 1920. The genus contains 41 species distributed across North America, with records from the United States, Canada, and Mexico. These spiders are small-bodied web-builders characteristic of the sheet weaver guild. The genus has been subject to taxonomic revision, with many species described by A.F. Millidge in 1980.
Spirembolus mundus
Spirembolus mundus is a species of sheet web spider (family Linyphiidae) described by Chamberlin & Ivie in 1933. It is found in the United States and Canada. The species belongs to a genus of small spiders that construct horizontal sheet webs, often with a dome or bowl shape. It was originally described as Spirembolus mundus by Chamberlin & Ivie, though some sources incorrectly cite Millidge (1980).
Stemonyphantes
Stemonyphantes is a genus of sheet-weaving spiders in the family Linyphiidae, first described by Anton Menge in 1866. The genus comprises approximately 20 species distributed across the Palearctic region, with some species extending into North America. As members of Linyphiidae, they construct flat, horizontal sheet webs for prey capture. The type species, Stemonyphantes lineatus (Linnaeus, 1758), is widespread across Europe and into Central Asia.
Tachygyna vancouverana
Tachygyna vancouverana is a dwarf spider in the family Linyphiidae, first described by Chamberlin and Ivie in 1939. The species is restricted to the Pacific Northwest region of North America. As a member of the sheet-web weaving family Linyphiidae, it constructs horizontal webs for prey capture. Like other members of its genus, it is small-bodied and ground-dwelling.
Tapinocyba
sheet weavers
Tapinocyba is a genus of sheet web spiders (family Linyphiidae) established by Eugène Louis Simon in 1884. The genus comprises approximately 40 species distributed across the Nearctic and Palearctic regions, including Europe, Asia, North America, and North Africa. Species are primarily found in leaf litter and forest floor habitats, often at montane elevations. Recent taxonomic work has clarified species boundaries and described new species from previously undersampled regions such as China and Nepal.
Tapinocyba cameroni
Tapinocyba cameroni is a species of sheet-web weaving spider in the family Linyphiidae, described in 2007 from Canada. The species is known from the prairie provinces of Alberta, Manitoba, and Saskatchewan. As a member of the dwarf spider family Linyphiidae, it is likely small-bodied with typical linyphiid morphology including reduced eyes and specialized setae on the tarsi.
Tapinocyba simplex
Simple Sheet-web Weaver
Tapinocyba simplex is a species of dwarf spider in the family Linyphiidae, commonly known as sheet-web weavers due to their characteristic web architecture. The species was described by James Henry Emerton in 1882. It is one of approximately 4,700 species in Linyphiidae, the second-largest spider family. Records indicate presence in the United States and Canada (Alberta, British Columbia, Manitoba).
Tapinopa bilineata
Tapinopa bilineata is a species of sheetweb spider in the family Linyphiidae, first described by Nathan Banks in 1893. It is a small arachnid found in North America, with records from the United States and Canada. Like other linyphiids, it constructs sheet webs to capture prey. The species is part of one of the most species-rich spider families, though specific ecological details for this particular species remain limited.
Tenuiphantes
Tenuiphantes is a genus of sheet-weaving spiders (family Linyphiidae) comprising 44 described species as of 2019. The genus was established by Saaristo and Tanasevitch in 1996 to accommodate species previously placed in other genera, particularly within the Lepthyphantes complex. Species occur across diverse habitats in the Northern Hemisphere and have been introduced to multiple Southern Hemisphere locations, including New Zealand, Chile, and Argentina.
Tenuiphantes zebra
Zebra Thin Sheetweaver
Tenuiphantes zebra is a species of sheetweb spider in the family Linyphiidae, a group known for constructing flat, horizontal webs. First described by Emerton in 1882, this small spider is found in North America, with records from the United States and Canada. As a member of the dwarf spider family Linyphiidae, it contributes to terrestrial arthropod diversity in its range, though detailed ecological studies remain limited.
Tenuiphantes zelatus
Tenuiphantes zelatus is a small sheetweb spider species in the family Linyphiidae, originally described by Zorsch in 1937. It is known from scattered records across northern North America, particularly in western and central Canada. Like other members of its family, it constructs flat, horizontal sheet webs for prey capture. The species remains poorly documented in scientific literature beyond basic taxonomic and distributional records.
Tmeticus ornatus
Decorated Red-and-black Money Spider
Tmeticus ornatus is a species of dwarf spider in the family Linyphiidae. It is found in the United States and Canada. The species was described by Emerton in 1914. As a member of the money spider family, it belongs to one of the most species-rich spider families globally.
Walckenaeria
dwarf spiders
Walckenaeria is a genus of dwarf spiders in the family Linyphiidae, first described by John Blackwall in 1833. The genus contains approximately 195-198 species as of 2020, distributed across multiple continents. Males in this genus exhibit distinctive eye morphology, with some species having eyes elevated on mounds, turrets, or stalks that can exceed the height of the carapace. Walckenaeria is a senior synonym of several previously described genera including Paragonatium, Wideria, and Cornicularia.
Walckenaeria auranticeps
Walckenaeria auranticeps is a species of dwarf spider in the family Linyphiidae. It was described by Emerton in 1882. The species has a transcontinental distribution spanning northern Eurasia and North America, with records from Russia (South Siberia to Far East), Canada, and the United States. As a member of the sheet-web weaving spiders, it belongs to one of the most species-rich families of spiders.
Walckenaeria bifida
Walckenaeria bifida is a species of dwarf spider in the family Linyphiidae, described by Millidge in 1983. It belongs to a genus of small sheet-web weaving spiders distributed primarily in the Northern Hemisphere. The species epithet 'bifida' refers to a cleft or divided structure, likely describing a morphological feature of this spider. As with many Linyphiidae, it is a small-bodied spider that constructs sheet webs for prey capture.
Walckenaeria columbia
dwarf spider
Walckenaeria columbia is a species of dwarf spider (subfamily Erigoninae) in the sheet-web weaving family Linyphiidae. Described by Millidge in 1983, this small arachnid is distributed across the United States and Canada. As a member of the Erigoninae, it likely constructs simple sheet webs or inhabits vegetation in ground-level habitats, though specific behavioral and ecological details remain poorly documented.
Walckenaeria cornuella
dwarf spider
Walckenaeria cornuella is a species of dwarf spider belonging to the family Linyphiidae. The species was described by Chamberlin and Ivie in 1939. It is distributed across the United States and Canada, with confirmed records from Alberta and British Columbia. Like other members of its genus, it is a small-bodied spider typical of the sheet-web weaving linyphiids.
Walckenaeria directa
dwarf spider
Walckenaeria directa is a species of dwarf spider in the family Linyphiidae, first described by O. Pickard-Cambridge in 1874. The species is known to occur in the United States and Canada. As a member of the sheet-web weavers, it belongs to one of the most diverse spider families, though specific ecological details for this species remain limited.
Walckenaeria exigua
dwarf spider
Walckenaeria exigua is a species of dwarf spider in the family Linyphiidae, first described by Millidge in 1983. It belongs to a genus of small sheet-web weavers characterized by their diminutive size and specialized genital morphology. The species has been documented across much of North America, with confirmed records from both the United States and Canada. Like other members of Linyphiidae, it constructs flat sheet webs with a retreat area, though specific web architecture details for this species remain undocumented.
Walckenaeria occidentalis
Walckenaeria occidentalis is a species of sheet-web weaver spider in the family Linyphiidae, described by Millidge in 1983. The specific epithet 'occidentalis' indicates a western distribution pattern. Like other members of this large family of small spiders, it constructs flat sheet webs with a retreat and associated knockdown threads to capture prey. The genus Walckenaeria contains numerous species, many of which are poorly known and require specialist identification.
Walckenaeria pallida
dwarf spider
Walckenaeria pallida is a species of dwarf spider in the family Linyphiidae, first described by Emerton in 1882. It is a small sheet-web weaver found in North America. The species has been documented in the United States and Canada, with specific records from Manitoba.
Walckenaeria palustris
Walckenaeria palustris is a species of dwarf spider in the family Linyphiidae, described by Millidge in 1983. The specific epithet 'palustris' (Latin for 'of the marsh') suggests association with wetland or marshy habitats. Like other members of the genus Walckenaeria, it is a small-bodied spider with characteristic genitalic structures used for species identification. The species has been recorded in Canada based on available distribution data.
Walckenaeria spiralis
Spiraling Sheet-web Weaver
Walckenaeria spiralis is a dwarf spider species in the family Linyphiidae, first described by Emerton in 1882. It belongs to a large genus of small sheet-web weaving spiders distributed across the Holarctic region. The species is known from scattered records across northern North America and the Russian Far North-East, suggesting a boreal distribution pattern.
Wubana
Wubana is a genus of sheet-web weaving spiders (family Linyphiidae) endemic to the United States. First described by Ralph Vary Chamberlin in 1919, the genus contains seven recognized species as of 2019. These small spiders construct flat, horizontal sheet webs for prey capture. The genus is exclusively North American with no documented occurrences outside the United States.
Wubana atypica
Wubana atypica is a species of sheetweb spider in the family Linyphiidae, first described in 1936. It is distributed across the United States and Canada, with confirmed records from Alberta and British Columbia. As a sheetweb spider, it constructs flat, horizontal webs for prey capture. The species remains poorly documented in scientific literature, with limited information available on its biology and ecology.
Wubana pacifica
Wubana pacifica is a species of sheetweb spider in the family Linyphiidae. It was described by Nathan Banks in 1896. The species is known from the United States. As a member of Linyphiidae, it constructs flat, horizontal sheet webs rather than orb webs.
Zornella
Zornella is a genus of sheet-weaving spiders (family Linyphiidae) established by A. R. Jackson in 1932. The genus contains three described species with a disjunct distribution: two species occur in North America (USA and Canada), while one species ranges across northern Eurasia from northeastern Europe through Russia to Kazakhstan and Mongolia. As linyphiids, members construct horizontal sheet webs with a retreat.
Zornella armata
dwarf spider
Zornella armata is a species of dwarf spider in the family Linyphiidae. It was first described by Nathan Banks in 1906. The species has been recorded in the United States and Canada, with specific occurrence records from Alberta, British Columbia, and Manitoba in Canada.