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Metepeira foxi
Metepeira foxi is an orb-weaving spider in the family Araneidae, first described by Gertsch and Ivie in 1936. The genus Metepeira is known for constructing distinctive combination webs consisting of a small orb web paired with a tangled, cobweb-like snare and a tubular retreat. Species in this genus are primarily found in North America, with highest diversity in western and southwestern regions. M. foxi occurs in the United States and Canada, though specific details of its biology remain poorly documented compared to better-studied congeners such as M. labyrinthea and M. incrassata.
Metylophorus purus
common barklouse
Metylophorus purus is a species of barklouse in the family Psocidae, originally described as Psocus purus by Walsh in 1862. It belongs to a group of small, soft-bodied insects commonly associated with bark, foliage, and decaying plant material. The species is considered common within its range and represents one of approximately 100 species in the genus Metylophorus.
Microcentrus perditus
Microcentrus perditus is a treehopper species in the family Membracidae, subfamily Stegaspidinae. It is native to the Nearctic region, with confirmed records from Texas, USA. The species was described by Amyot and Audinet-Serville in 1843 and belongs to the tribe Microcentrini, which is characterized by distinctive pronotal modifications typical of this group of treehoppers.
Mimetus hesperus
pirate spider
Mimetus hesperus is a species of pirate spider in the family Mimetidae, described by Chamberlin in 1923. It is found in the United States. Pirate spiders are specialized araneophagic predators that infiltrate the webs of other spiders to hunt them.
Mimetus notius
Reticulated Pirate Spider
Mimetus notius is a species of pirate spider in the family Mimetidae, described by Chamberlin in 1923. It is found in the United States and is commonly known as the Reticulated Pirate Spider. Like other mimetids, it is an araneophagic predator that infiltrates the webs of other spiders. Specific details about its biology and ecology remain limited in available literature.
Monalocorisca rostrata
Monalocorisca rostrata is a species of plant bug in the family Miridae, first described by Johnston in 1939. It belongs to the large and diverse family of true bugs, which are characterized by their piercing-sucking mouthparts. The species is currently accepted and documented in taxonomic catalogs, though detailed biological information remains limited.
Myrmedonota lewisi
Myrmedonota lewisi is a species of rove beetle in the family Staphylinidae, described by Maruyama & Klimaszewski in 2008. The species is known from Indiana, USA. It belongs to the tribe Lomechusini, a group noted for ant-associated behaviors. Members of the genus Myrmedonota are recognized for their ecological relationships with ants, including predation on ants attracted by alarm pheromones.
Nebria obliqua
Oblique Mountains gazelle beetle
Nebria obliqua is a species of ground beetle in the family Carabidae, first described by LeConte in 1867. It belongs to the subgenus Reductonebria and is one of two recognized subspecies: the nominate N. o. obliqua and N. o. chuskae. The species is distributed across northern North America, including Alaska, Canada, and the contiguous United States.
Nemotarsus rhombifer
Nemotarsus rhombifer is a species of ground beetle in the family Carabidae, first described by Henry Walter Bates in 1883. It belongs to the subfamily Lebiinae and tribe Cyclosomini. The species has been recorded from Guatemala, Mexico, and the United States, spanning parts of Central and North America.
Neoantistea magna
Thick-hooked Comb-tailed Spider
Neoantistea magna is a species of true spider in the family Hahniidae, a group commonly known as the sheet-web weaving spiders. It is found in the United States and Canada, with records from Alberta, British Columbia, and Manitoba. The species belongs to the marronoid clade, a genetically defined group of spiders that includes diverse ecologies and behaviors. The common name "Thick-hooked Comb-tailed Spider" refers to characteristic structures on the posterior abdomen.
Neobeyeria arizonensis
Neobeyeria arizonensis is a species of rove beetle (family Staphylinidae) described in 1987 from Arizona. It belongs to the tribe Crematoxenini within the subfamily Aleocharinae, a diverse group of small to medium-sized beetles characterized by their shortened elytra that leave much of the abdomen exposed. As a member of this tribe, it is likely associated with termite colonies, though specific host relationships for this species remain undocumented.
Nephrotoma altissima
Nephrotoma altissima is a species of large crane fly in the family Tipulidae. It occurs across northern and western North America, ranging from Alaska and northern Canada south to Oregon, Arizona, and New Mexico. As a member of the genus Nephrotoma, it belongs to a group commonly known as tiger crane flies, which are distinguished by patterned wings and bodies.
Neurocolpus johnstoni
Neurocolpus johnstoni is a species of plant bug in the family Miridae, described by Knight in 1934. It belongs to the genus Neurocolpus, a group of mirid bugs found in North America. The species is known from limited collection records in Texas, USA. Like other members of Miridae, it is a true bug with piercing-sucking mouthparts. Specific ecological details remain poorly documented.
Olethreutes astrologana
Astronomer Moth, astronomer
Olethreutes astrologana, commonly known as the astronomer or astronomer moth, is a species of tortricid moth in the family Tortricidae. It is a small moth in the subfamily Olethreutinae, tribe Olethreutini. The species was first described by Zeller in 1875 under the basionym Sericoris astrologana.
Omalonomus relictus
Omalonomus relictus is a rove beetle species in the family Staphylinidae, described by Campbell and Peck in 1990. The species has been recorded from western Canada (Alberta, Saskatchewan) and the northwestern United States (Utah, Washington). As a member of the subfamily Omaliinae, it belongs to a group of rove beetles often associated with forest floor habitats and decaying organic matter.
Onthophagus cynomysi
Onthophagus cynomysi is a species of dung beetle in the family Scarabaeidae, first described by Brown in 1927. It is part of the large and diverse genus Onthophagus, which contains hundreds of species distributed worldwide. Like other members of this genus, it is likely associated with mammalian dung as a food and breeding resource, though specific ecological details remain poorly documented. The species is known from scattered records in the south-central United States.
Onychomira floridensis
Onychomira floridensis is a darkling beetle (family Tenebrionidae) described by Campbell in 1984. The genus Onychomira is part of the speciose family Tenebrionidae, commonly known as darkling beetles, which are primarily detritivores and are abundant in arid and semi-arid environments. No specific ecological or behavioral studies have been published for this species.
Oodes amaroides
Oodes amaroides is a ground beetle species in the family Carabidae, first described by Dejean in 1831. It belongs to the subfamily Licininae and tribe Oodini. The species is documented from North America, with occurrence records from Canada and the United States. As a member of the genus Oodes, it shares characteristics with other oodine ground beetles, though specific biological details remain limited in published literature.
Orimarga mirabilis
Orimarga mirabilis is a crane fly species in the family Limoniidae, described by Osten Sacken in 1878. The species is known from the Nearctic and Neotropical regions, with records from the eastern and southern United States (Indiana to Georgia, south to Texas, Louisiana, and Florida) and Cuba. It is one of approximately 48 observed species in the genus Orimarga.
Oxycrepis duryi
Oxycrepis duryi is a species of ground beetle in the family Carabidae, first described by Wright in 1939. It is found in North America, with records from the United States. Like other members of the genus Oxycrepis, it is a ground-dwelling beetle, though specific details about its ecology and behavior remain poorly documented in the scientific literature.
Oxyomoides sepultus
Oxyomoides sepultus is a species of dung beetle in the family Scarabaeidae, subfamily Aphodiinae. It was described by Cartwright in 1944 and is known from a limited number of records in the south-central United States. The genus Oxyomoides is small and poorly studied, with most species remaining obscure in terms of biology and ecology.
Pachygnatha autumnalis
Big-eyed Thick-jawed Spider
Pachygnatha autumnalis is a long-jawed orb-weaver spider in the family Tetragnathidae, first described by Marx in 1884. The species occurs across a broad North American and Caribbean range, including the United States, Canada, and Cuba. As a member of the genus Pachygnatha, it shares the characteristic robust, enlarged chelicerae that distinguish this group from other tetragnathids. Observations suggest it is primarily active during autumn months, consistent with its specific epithet.
Parablastothrix
Parablastothrix is a genus of parasitic wasps in the family Encyrtidae, established by Mercet in 1917. Species in this genus are known to parasitize leaf-mining Lepidoptera. The genus includes at least two described species: P. nearctica from the USA and P. ninelpetrovae from Mexico. These wasps are part of the diverse Encyrtidae family, which contains numerous biological control agents used in agricultural pest management.
Pardosa californica
Pardosa californica is a species of thin-legged wolf spider in the family Lycosidae, first described by Keyserling in 1887. It belongs to the genus Pardosa, which comprises small to medium-sized wolf spiders characterized by long spines on their legs that are nearly perpendicular to the leg axis. The species is found in the United States and Mexico. Like other members of its genus, it is likely associated with moist habitats near water sources, though specific ecological details for this species remain limited.
Pardosa dorsuncata
Pardosa dorsuncata is a species of thin-legged wolf spider in the family Lycosidae. It was described by Lowrie and Dondale in 1981. The species is found in the United States and Canada, with records from Alberta and British Columbia in Canada. As a member of the genus Pardosa, it shares characteristics typical of this widespread group of small to medium-sized wolf spiders.
Pardosa mercurialis
Pardosa mercurialis is a species of thin-legged wolf spider in the family Lycosidae, found in the United States. It belongs to the genus Pardosa, which comprises small to medium-sized wolf spiders characterized by long, perpendicular leg spines. Species-level identification requires microscopic examination of genitalia. Like other Pardosa species, it is likely ground-dwelling and associated with varied terrestrial habitats, though specific ecological details for this species remain poorly documented.
Pardosa tuoba
Pardosa tuoba is a species of wolf spider in the family Lycosidae, first described by Chamberlin in 1919. It belongs to the genus Pardosa, commonly known as thin-legged wolf spiders, which are among the most abundant wolf spiders in North America. The species is known from the United States, though specific details about its ecology and distribution remain limited in available sources. As with other Pardosa species, it is likely a ground-dwelling active hunter.
Pardosa vadosa
thin-legged wolf spider
Pardosa vadosa is a species of thin-legged wolf spider in the family Lycosidae, first described by Barnes in 1959. As a member of the genus Pardosa, it shares the characteristic long, perpendicular leg spines that distinguish this group from other wolf spiders. The species occurs in the United States and Mexico. Like other Pardosa species, it is likely ground-dwelling and associated with varied terrestrial habitats, though specific ecological details for this species remain limited.
Pardosa yavapa
Pardosa yavapa is a species of thin-legged wolf spider in the family Lycosidae. It belongs to the genus Pardosa, a diverse and abundant group of small to medium-sized wolf spiders characterized by their distinctive leg spination. The species was described by Chamberlin in 1925 and is known from the United States. As with other Pardosa species, microscopic examination of genitalia is required for definitive species identification.
Paurocoris punctata
Paurocoris punctata is a seed bug in the family Rhyparochromidae, first described by Distant in 1893. The species belongs to the tribe Antillocorini and is known from scattered records in the southern United States and Panama. As a member of the Lygaeoidea superfamily, it likely exhibits the typical seed-feeding habits common to this group, though specific ecological data remain limited. The genus Paurocoris is relatively poorly studied, with most species known from few specimens and limited geographic documentation.
Pelegrina pervaga
Pelegrina pervaga is a species of jumping spider (family Salticidae) described by G.W. Peckham and E.G. Peckham in 1909. It occurs in the United States. Like other salticids, it possesses excellent vision and active hunting behavior. The genus Pelegrina contains multiple species of small to medium-sized jumping spiders distributed primarily in North America.
Pelochrista floridensis
Pelochrista floridensis is a species of tortricid moth described by Wright in 2011. It belongs to the diverse genus Pelochrista within the subfamily Olethreutinae. The species epithet suggests a geographic association with Florida. Like other members of its genus, it is likely a small moth with larvae that feed internally on plant tissues, though specific natural history details remain poorly documented.
Phanias albeolus
Phanias albeolus is a species of jumping spider in the family Salticidae. It was described by Chamberlin & Ivie in 1941. The species is found in the United States.
Phantyna bicornis
mesh web weaver
Phantyna bicornis is a species of mesh web weaver spider in the family Dictynidae. It was described by Emerton in 1915. The species is known from North America, with records from the United States and Canada.
Phidippus comatus
Hairy Tufted Jumping Spider
Phidippus comatus is a species of jumping spider in the family Salticidae, distributed across North America including Canada, the United States, and Mexico. The species belongs to the genus Phidippus, which includes some of the largest jumping spiders in North America. Like other members of this genus, it possesses the characteristic enlarged anterior median eyes that provide excellent vision for hunting. The specific epithet 'comatus' refers to the hairy or tufted appearance.
Phidippus lynceus
Phidippus lynceus is a species of jumping spider in the family Salticidae, described by G.B. Edwards in 2004 as part of his revision of the genus Phidippus. As a member of this genus, it belongs to a group of relatively large, visually oriented hunting spiders known for their acute eyesight and complex behaviors. The species epithet "lynceus" derives from Greek mythology, referring to Lynceus, a figure noted for his exceptional vision. Specific details regarding its morphology, habitat preferences, and natural history remain poorly documented in the accessible literature, reflecting the challenges of studying this diverse genus of spiders.
Phidippus vexans
Phidippus vexans is a species of jumping spider in the family Salticidae, described by G.B. Edwards in 2004. As a member of the genus Phidippus, it shares the characteristic large anterior median eyes and active hunting behavior typical of salticid spiders. The species is known from the United States, though detailed ecological and behavioral information remains limited in published sources.
Philodromus anomalus
running crab spider
Philodromus anomalus is a running crab spider in the family Philodromidae, first described by Gertsch in 1934. It is a member of the infraorder Araneomorphae, the "true spiders." The species is known from the United States, though specific details about its biology and ecology remain limited in published literature.
Philodromus marginellus
Philodromus marginellus is a running crab spider in the family Philodromidae, first described by Banks in 1901. As a member of the genus Philodromus, it shares the family's characteristic laterigrade leg orientation, with legs extending sideways from the body rather than vertically. The species occurs in North America, with records from the United States and Mexico. Like other philodromids, it is an active hunter that does not build webs to capture prey.
Philodromus oneida
Oneida Running Crab Spider
Philodromus oneida is a species of running crab spider in the family Philodromidae, first described by Levi in 1951. It is distributed across the United States and Canada, with records from Alberta, British Columbia, and Manitoba in Canada. As a member of the genus Philodromus, it shares the characteristic laterigrade leg orientation that allows sideways movement, typical of running crab spiders.
Philophuga caerulea
Philophuga caerulea is a species of ground beetle in the family Carabidae, first described by Casey in 1913. It occurs in Central America and North America, with records from Mexico and the United States. As a member of the subfamily Lebiinae, it belongs to a diverse group of often small, active predatory beetles. Specific ecological details and morphological traits for this species remain poorly documented in available sources.
Phytocoris albifrons
Phytocoris albifrons is a species of plant bug in the family Miridae, described by Knight in 1968. It belongs to the large and diverse genus Phytocoris, which contains numerous species of predatory and phytophagous true bugs. The species is known from Arizona, USA, with limited published information on its biology and ecology.
Phytocoris nicholi
Phytocoris nicholi is a species of plant bug in the family Miridae, described by Knight in 1928. It belongs to a large genus of mostly phytophagous true bugs. The species is known from Arizona, USA. Like other Phytocoris species, it is likely primarily plant-feeding with occasional predatory behavior on smaller insects.
Phytocoris tuberculatus
A small mirid plant bug described by Knight in 1920, known from limited records in the eastern United States. Belongs to the genus Phytocoris, a diverse group of plant bugs characterized by their slender bodies and often cryptic coloration. Specific details of its biology remain poorly documented due to its apparent rarity and limited collection records.
Platycryptus arizonensis
Platycryptus arizonensis is a species of jumping spider in the family Salticidae. It is found in the United States, with records indicating presence in North America. The species belongs to a genus of jumping spiders characterized by their flattened body form and cryptic coloration.
Platynus parmarginatus
Platynus parmarginatus is a species of ground beetle in the family Carabidae, first described by Hamilton in 1893. It belongs to the subfamily Platyninae, a group of predominantly nocturnal predatory beetles. The species is documented from the United States within North America. Like other Platynus species, it is likely a generalist predator inhabiting forest floor environments.
Polpochila capitata
Polpochila capitata is a species of ground beetle in the family Carabidae. It was originally described as Melanotus capitatus by Chaudoir in 1852 and later transferred to the genus Polpochila. The species is known from North America, with records from Mexico and the United States. As a member of Carabidae, it belongs to a large family of predatory beetles commonly found in terrestrial habitats.
Prepops atripennis
Prepops atripennis is a species of plant bug in the family Miridae. It has been recorded from the United States (Nevada, New York, Texas), Cuba, and Brazil. The species was described by Reuter in 1876. As a member of the genus Prepops, it belongs to a group of mirids commonly known as leaf bugs.
Pseudagolius coloradensis
Pseudagolius coloradensis is a species of scarab beetle in the family Scarabaeidae, subfamily Aphodiinae. It is distributed across the Nearctic region from the Canadian prairies through the western and central United States to central Mexico. The species was described by Horn in 1870. Limited behavioral and ecological information is available for this species.
Pseudanophthalmus cerberus completus
Pseudanophthalmus cerberus completus is a subspecies of small carabid beetle described by Barr in 1985. It belongs to the genus Pseudanophthalmus, a group of troglobitic (cave-dwelling) ground beetles endemic to North America. The subspecies epithet "completus" indicates it represents a fully differentiated form within the P. cerberus species complex. Like other members of this genus, it is likely restricted to subterranean habitats in the eastern United States.