Ground-beetle
Guides
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.
Nippononebria altisierrae
high sierra false gazelle beetle
Nippononebria altisierrae, commonly known as the high sierra false gazelle beetle, is a black-colored ground beetle in the family Carabidae. It was originally described as Nebria altisierrae by Kavanaugh in 1984 and later transferred to the genus Nippononebria. The species belongs to the subgenus Vancouveria and is endemic to California's mountainous regions.
Nippononebria virescens
greenish false gazelle beetle
Nippononebria virescens is a species of ground beetle in the family Carabidae, commonly known as the greenish false gazelle beetle. It is native to western North America, where it inhabits meadow habitats. Adults are nocturnal and carnivorous. The species is relatively poorly documented, with limited observational records.
Nitidotachinus scrutator
Nitidotachinus scrutator is a species of rove beetle in the family Staphylinidae, subfamily Tachyporinae. It is a small beetle with a documented distribution across eastern North America, from Canada through the northeastern and midwestern United States. Like other members of its genus, it inhabits forest floor environments where it functions as a generalist predator or scavenger. The species was described by Gemminger and Harold in 1868.
Nomius
Nomius is a genus of ground beetles (Carabidae) in the tribe Psydrini, subfamily Psydrinae. The genus contains at least one well-documented species, Nomius pygmaeus, which exhibits a remarkable disjunct distribution across North America, Europe, and Asia. Members are characterized by their isolated phylogenetic position within the Harpalinae subfamily.
Nomius pygmaeus
stink beetle, stinking beetle
Nomius pygmaeus is a small ground beetle in family Carabidae, the sole representative of tribe Psydrini. Adults emit a distinctive repugnant odor when captured or disturbed, earning the common name "stink beetle." The species exhibits a remarkably disjunct global distribution, occurring in North America from Canada to California and sporadically across parts of Europe and southwestern Asia.
Notiobia cephala
Notiobia cephala is a species of ground beetle in the family Carabidae, first described by Casey in 1914. It is native to North America, with distribution records from the United States. As a member of the genus Notiobia, it belongs to a group of small to medium-sized carabid beetles often associated with riparian or moist habitats.
Notiobia mexicana
Notiobia mexicana is a species of ground beetle in the family Carabidae. It occurs across a broad geographic range from the southwestern United States through Mexico and Central America to Panama. As a member of the tribe Notiobiini, it belongs to a group of carabid beetles often associated with riparian and wetland habitats.
Notiobia purpurascens
Notiobia purpurascens is a species of ground beetle in the family Carabidae, found in North America. The specific epithet "purpurascens" refers to a purplish coloration. As a member of the tribe Notiobiini, it belongs to a group of carabid beetles characterized by particular morphological features. The species has been documented from both the United States and Mexico based on distribution records.
Notiobia sayi
Notiobia sayi is a species of ground beetle in the family Carabidae, first described by Blatchley in 1910. It occurs in North America, with confirmed records from Canada and the United States. As a member of the genus Notiobia, it belongs to a group of ground beetles whose ecology and natural history remain poorly documented in the scientific literature. The species is represented by 76 observations on iNaturalist, indicating it is encountered with moderate frequency by naturalists.
Notiophilus aeneus
Brassy Big-eyed Beetle
Notiophilus aeneus, commonly called the brassy big-eyed beetle, is a small ground beetle in the family Carabidae. Adults measure approximately 5–6 mm in length. The species is characterized by its dark coloration with a brassy metallic tinge and notably large eyes. It occurs in North America and exhibits diurnal activity during spring and summer months.
Notiophilus aquaticus
black-legged springtail-stalker
Notiophilus aquaticus is a Holarctic ground beetle in the family Carabidae, commonly known as the black-legged springtail-stalker. It occupies diverse open and semi-open habitats including moraines, meadows, and forest edges. The species is one of several in the genus Notiophilus, which are recognized for their specialized predation on springtails (Collembola).
Notiophilus borealis
northern big-eyed beetle
Notiophilus borealis is a ground beetle in the family Carabidae, commonly known as the northern big-eyed beetle. The species has a Holarctic distribution, occurring in Europe, Northern Asia (excluding China), and North America. It inhabits open or partially shaded gravelly and sandy ground with sparse vegetation, including moraines, meadows, roadsides, and open forests. The genus Notiophilus is characterized by large, prominent eyes, an adaptation for visual predation.
Notiophilus intermedius
intermediate big-eyed beetle
Notiophilus intermedius is a species of ground beetle in the family Carabidae, described by Lindroth in 1955. It is commonly known as the intermediate big-eyed beetle. The species occurs in northern North America, including Alaska and several Canadian provinces. Adults are brachypterous (short-winged) and primarily diurnal in activity.
Notiophilus nitens
bright big-eyed beetle
Notiophilus nitens is a ground beetle in the family Carabidae, commonly known as the bright big-eyed beetle. It occurs in western North America, with documented populations in British Columbia, Idaho, Montana, Oregon, and Washington. Adults exhibit wing dimorphism, with some individuals having reduced wings (brachypterous) and others fully developed wings (macropterous). The species inhabits open, disturbed habitats including grasslands and agricultural areas.
Notiophilus semistriatus
semi-striate big-eyed beetle
Notiophilus semistriatus is a ground beetle in the family Carabidae, commonly known as the semi-striate big-eyed beetle. It exhibits wing dimorphism, with populations containing both fully-winged (macropterous) and short-winged (brachypterous) adults. The species is primarily active during daylight hours. It occupies a range of open and edge habitats across northern North America and extends into Russia.
Notiophilus sierranus
mountain big-eyed beetle
Notiophilus sierranus is a ground beetle species in the family Carabidae, endemic to California. Adults are characterized by reduced flight wings (brachypterous condition). The species belongs to a genus known for large, prominent eyes adapted for visual hunting.
Notiophilus simulator
Fall's big-eyed beetle
Notiophilus simulator is a ground beetle in the family Carabidae, commonly known as Fall's big-eyed beetle. The species exhibits wing dimorphism, with populations containing both short-winged (brachypterous) and long-winged (macropterous) individuals. It inhabits upland to mountainous environments across North America.
Notiophilus sylvaticus
forest big-eyed beetle
Notiophilus sylvaticus is a ground beetle in the family Carabidae, commonly known as the forest big-eyed beetle. It is native to North America and exhibits wing dimorphism, with populations containing both short-winged (brachypterous) and long-winged (macropterous) individuals. Adults are gregarious and primarily active during daylight hours. The species inhabits open forests and meadows.
Nyctoporini
Nyctoporini is a tribe of darkling beetles (family Tenebrionidae, subfamily Pimeliinae) established by Lacordaire in 1859. The tribe includes the genus Nyctoporis, which contains approximately five described species distributed in North America. Members of this tribe are ground-dwelling beetles associated with arid and semi-arid environments.
Olisthopus
Olisthopus is a genus of ground beetles in the family Carabidae, subfamily Platyninae. The genus is native to the Palearctic region, with records from Europe, the Near East, and North Africa. Additional distribution records include Scandinavia (Denmark, Norway, Sweden) and North America (Vermont, USA). As a member of Platyninae, species in this genus are likely associated with ground-dwelling habits in various terrestrial habitats.
Olisthopus micans
Olisthopus micans is a ground beetle species in the family Carabidae, first described by LeConte in 1846. It belongs to the subfamily Platyninae and is native to North America. The genus Olisthopus comprises small to medium-sized ground beetles, though specific ecological details for this species remain poorly documented.
Olisthopus parmatus
Olisthopus parmatus is a ground beetle species in the family Carabidae, first described by Thomas Say in 1823. It is native to North America, with documented occurrence in Canada and the United States. The species includes two recognized subspecies: O. p. parmatus and O. p. iterans. Like other members of the genus Olisthopus, it belongs to the subfamily Platyninae within the diverse ground beetle radiation.
Olophrum consimile
Olophrum consimile is a Holarctic rove beetle (Staphylinidae: Omaliinae) found across northern North America and Eurasia. First described by Gyllenhal in 1810, this species has accumulated multiple junior synonyms due to morphological variability. The species is part of a genus of small, ground-dwelling beetles associated with moist forest habitats.
Omoglymmius americanus
American crudely carved wrinkle beetle
Omoglymmius americanus, commonly known as the American crudely carved wrinkle beetle, is a small ground beetle in the family Rhysodidae native to eastern North America. First described in 1836, this species is characterized by its distinctive sculptured exoskeleton with grooves and indentations. Adults are found in association with fungus-infested trees, where they inhabit decaying wood. The species represents one of approximately 38 observation records documented on iNaturalist.
Omophron dentatum
Toothed Round Sand Beetle
Omophron dentatum, known as the toothed round sand beetle, is a ground beetle in the family Carabidae. It occurs in Central America and western North America, including California and Baja California. Adults are nocturnal and both life stages construct burrows in sandy substrates near water margins. The species is associated with riparian habitats at the edges of rivers, brooks, and ponds.
Omophron labiatum
large-lipped round sand beetle
Omophron labiatum is a ground beetle species in the family Carabidae, commonly known as the large-lipped round sand beetle. It occurs in North America, where it inhabits margins of ponds, lakes, and rivers in coastal lowlands. Adults are nocturnal and gregarious, hiding in ground burrows during daylight hours. The larvae have been reported to feed on grains and corn, leading to occasional pest status in agricultural contexts.
Omophron nitidum
Shiny Round Sand Beetle
Omophron nitidum is a small ground beetle native to the United States. Adults are nocturnal, sheltering in burrows and leaf litter during daylight hours. The species has been recorded breeding from late summer through December. It is one of several North American species in the genus Omophron, which are adapted to sandy habitats.
Omophron ovale
Oval Round Sand Beetle
Omophron ovale, known as the oval round sand beetle, is a small ground beetle in the family Carabidae. It measures 4.5–6.6 mm in length and displays a distinctive color pattern of yellowish tan with metallic green markings. The species is riparian, inhabiting sandy and muddy margins of freshwater bodies as well as some coastal habitats.
Omophron robustum
Robust Round Sand Beetle
Omophron robustum, commonly known as the robust round sand beetle, is a species of ground beetle in the family Carabidae. It is found in North America, specifically in the central and northern United States and southern Canada. The species inhabits sandy beaches of lakes, rivers, and brooks. Adults are nocturnal and gregarious, hiding in burrows or under debris during the day.
Onichodon rugicollis
Onichodon rugicollis is a species of ground beetle in the family Carabidae. It belongs to the tribe Lebiini, a diverse group of small to medium-sized carabid beetles. The species is characterized by its distinctive sculptured pronotum, which contributes to its specific epithet. Like other members of its genus, it is likely associated with ground-level habitats in forested or vegetated environments.
Onota
Onota is a genus of ground beetles in the family Carabidae, established by Chaudoir in 1873. It belongs to the subtribe Agrina within the tribe Lebiini, subfamily Lebiinae. The genus is poorly documented in modern literature, with minimal observational records available.
Onota angulicollis
Onota angulicollis is a species of ground beetle in the family Carabidae, originally described as Lebia angulicollis by Reiche in 1842. It is distributed across the Americas from North America through Central America to South America. As a member of the subfamily Lebiinae, it belongs to a group of carabid beetles commonly known as colorful foliage ground beetles, many of which are associated with vegetation rather than ground-dwelling habits. The specific epithet angulicollis refers to the angular or angled collar (pronotum) characteristic of 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.
Oodes fluvialis
Oodes fluvialis is a ground beetle species in the family Carabidae, first described by LeConte in 1863. It belongs to the tribe Oodini within the subfamily Licininae. The species occurs in North America, with documented presence in Canada and the United States. Very little specific biological information has been published for this species.
Oodinus alutaceus
Oodinus alutaceus is a ground beetle species in the family Carabidae, originally described by Henry Walter Bates in 1882. It belongs to the tribe Oodini within the subfamily Licininae. The species has a documented distribution spanning parts of North and Central America, including Mexico and the United States.
Opisthius
Opisthius is a monotypic genus of ground beetles in the family Carabidae, containing the single species Opisthius richardsoni. The genus is classified within the subfamily Nebriinae and tribe Opisthiini. Its sole species is distributed across northern North America, from Alaska and Yukon south to California and New Mexico. The genus is notable for its strong superficial resemblance to tiger beetles (Cicindelinae), which has led to frequent misidentification by collectors.
Opisthius richardsoni
Opisthius richardsoni is a ground beetle in the family Carabidae, native to northern North America. It is frequently mistaken for tiger beetles (Cicindelinae) due to its superficial resemblance, a common identification error among collectors. The species occurs across Alaska, Canada, and the northern United States.
Oxycrepis crenata
Oxycrepis crenata is a species of ground beetle in the family Carabidae, first described by LeConte in 1853. It is native to North America. The genus Oxycrepis is part of the tribe Harpalini, a diverse group of ground beetles. Available information on this species is limited to taxonomic records and basic distribution data.
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.
Oxycrepis erratica
Oxycrepis erratica is a species of ground beetle in the family Carabidae. It is found in the United States.
Oxycrepis intercepta
Oxycrepis intercepta is a species of ground beetle in the family Carabidae. It occurs in North America, with records from Mexico and the United States. As a member of the tribe Harpalini, it belongs to a diverse group of predominantly ground-dwelling beetles. Published information on its biology and ecology remains limited.
Oxycrepis recta
Oxycrepis recta is a ground beetle species in the family Carabidae, first described by Thomas Say in 1823. It is known from the United States, though specific details about its biology and ecology remain poorly documented. The genus Oxycrepis is part of the diverse carabid fauna of North America.
Oxycrepis saphyrina
Oxycrepis saphyrina is a species of ground beetle in the family Carabidae, tribe Lebiini. It was described by Chaudoir in 1843. Records indicate occurrence in the United States, though detailed biological information remains limited. The genus Oxycrepis comprises small to medium-sized carabid beetles, many of which inhabit forest floor habitats.
Oxycrepis sculptilis
Oxycrepis sculptilis is a species of ground beetle in the family Carabidae, originally described as Loxandrus sculptilis by Bates in 1884. It is distributed across parts of North America, with records from the United States, Mexico, and Panama. Like other members of Carabidae, it is a terrestrial beetle, though detailed biological information for this species is limited.
Oxycrepis velocipes
Oxycrepis velocipes is a ground beetle species in the family Carabidae, originally described as Loxandrus velocipes by Casey in 1918. It belongs to a genus of small to medium-sized carabid beetles found primarily in North America. The species is documented from Canada and the United States, though specific ecological details remain poorly recorded in the scientific literature.
Oxypselaphus pusillus
Oxypselaphus pusillus is a species of ground beetle in the family Carabidae. It is found in North America. The species belongs to the subfamily Platyninae and tribe Platynini. Limited information is available on its biology and ecology.
Panagaeus fasciatus
Panagaeus fasciatus is a small ground beetle in the subfamily Panagaeinae, found in dry forests across the United States and Canada. The species is readily identified by its orange coloration with two distinct black transverse lines across the pronotum. Adults measure approximately 5 mm in length. The beetle has been documented in states including Arizona and Kansas.
Panagaeus sallei
hairy ground beetle
Panagaeus sallei is a species of ground beetle in the family Carabidae, commonly referred to as a 'hairy ground beetle.' It is native to North America. The species was described by Chaudoir in 1862. Like other members of the genus Panagaeus, it is a predatory beetle inhabiting ground-level environments.
Paraclivina postica
Paraclivina postica is a species of ground beetle in the family Carabidae. It was described by LeConte in 1846. The species is currently classified under the genus Paraclivina, though it has been treated as a synonym of Clivina postica in some taxonomic treatments. Records indicate presence in the United States and North America generally.