Cerambycidae
Guides
Nothopleurus madericus
Nothopleurus madericus is a large prionine longhorn beetle described by Skiles in 1978. It belongs to a genus characterized by robust, wood-boring beetles. The species name references Madera Canyon in the Santa Rita Mountains of Arizona, a known locality for this rare beetle. Field observations indicate adults may be crepuscular or nocturnal, with at least one individual observed in an emergence hole on oak during evening hours.
Oberea
Oberea is a genus of longhorn beetles (family Cerambycidae) in the tribe Obereini. Most species are stem borers of various plants, with documented associations including blackberries and their relatives, willows, aspen, and Euphorbia species. The genus has a broad distribution across North America, Europe, and parts of Asia and Africa. Several species have been investigated for biological control of invasive plants, including Oberea erythrocephala for leafy spurge management in Canada.
Oberea affinis
Raspberry Cane Borer
Oberea affinis is a species of longhorn beetle in the family Cerambycidae, first described by Leng & Hamilton in 1896. Commonly known as the Raspberry Cane Borer, this species belongs to the genus Oberea, which contains numerous stem-boring beetles associated with various host plants. The species is part of the tribe Saperdini (or Obereini, depending on classification system) within the subfamily Lamiinae.
Oberea caseyi
Oberea caseyi is a species of longhorn beetle in the tribe Obereini, described by Plavilstshikov in 1926. It belongs to the genus Oberea, a group of slender, elongate beetles commonly known as gall-making longhorns. The species is distributed in North America, with records from Canada and the United States. Like other members of its genus, it likely exhibits an elongate, cylindrical body form with relatively long antennae.
Oberea deficiens
Oberea deficiens is a species of longhorned beetle in the family Cerambycidae, described by Thomas Lincoln Casey Jr. in 1924. It belongs to the genus Oberea, a group of relatively slender, elongate beetles commonly associated with woody plants. The species is known from multiple provinces across Canada. Information regarding its biology, host plants, and detailed morphology remains limited in published literature.
Oberea delongi
Poplar Twig Borer
Oberea delongi is a species of flat-faced longhorn beetle in the tribe Obereini, described by Knull in 1928. It belongs to the genus Oberea, a group of slender, twig-boring beetles commonly known as twig borers. The species occurs in eastern North America, with records from Ontario, Québec, and surrounding regions.
Oberea erythrocephala
Leafy Spurge Stem Boring Beetle, Red-headed Leafy Spurge Stem Borer
Oberea erythrocephala is a slender, elongate longhorn beetle introduced to North America as a biological control agent for leafy spurge (Euphorbia esula). Adults have distinctive red heads, black eyes, and grayish-black hind wings. The species is univoltine and oligophagous, feeding and developing only on certain Euphorbia species in the subgenus Esula. It was approved for release in the United States in 1980 and has since established populations across at least fifteen states and several Canadian provinces. The beetle is considered secondary to Aphthona flea beetles in leafy spurge management due to its narrower host range.
Oberea gracilis
Oak-sprout Oberea
Oberea gracilis is a longhorned beetle (family Cerambycidae) in the subfamily Lamiinae. It was first described by Johan Christian Fabricius in 1801, originally placed in the genus Saperda before being transferred to Oberea. The species is known from North America, with observations concentrated in the United States. It is commonly referred to as the 'Oak-sprout Oberea', suggesting an association with oak vegetation.
Oberea oculaticollis
Oberea oculaticollis is a species of longhorned beetle in the family Cerambycidae, described by Thomas Say in 1824. It is distributed across central North America from Manitoba to Texas. The species is characterized by its dark integument covered with dense, grayish pubescence. An adult was observed on black willow (Salix nigra) in Oklahoma, which may represent the first documented host plant association for this species.
Oberea perspicillata
Raspberry Cane Borer
Oberea perspicillata, commonly known as the raspberry cane borer, is a species of flat-faced longhorn beetle in the family Cerambycidae. It is distributed across North America, with records from Canada (Manitoba, Ontario, Québec) and the United States. The species belongs to the genus Oberea, a group of small to medium-sized longhorn beetles often associated with woody plants.
Oberea praelonga
Oberea praelonga is a species of longhorn beetle in the family Cerambycidae, described by Thomas Lincoln Casey Jr. in 1913. It belongs to the genus Oberea, a group of small to medium-sized beetles characterized by their slender, cylindrical bodies and often cryptic coloration. The species is known from eastern Canada, with records from New Brunswick, Ontario, and Québec.
Oberea ruficollis
red-necked longhorn beetle
Oberea ruficollis is a longhorn beetle (family Cerambycidae) in the subfamily Lamiinae. First described by Fabricius in 1793, it occurs in North America including Canada and the United States. Like other members of the genus Oberea, it is characterized by an elongated, slender body form. The specific epithet "ruficollis" refers to the reddish coloration of the pronotum (collar region).
Oberea schaumii
Oberea schaumii is a cerambycid beetle that develops as larvae in trembling aspen (Populus tremuloides). The species has a variable life cycle duration: most individuals require three years to develop, though some complete development in two years and others require four. Adults emerge from late June through July. The beetle occurs in the crowns of large aspen trees and shows competitive interactions with Saperda inornata.
Oberea tripunctata
dogwood twig borer
Oberea tripunctata, commonly known as the dogwood twig borer, is a species of longhorn beetle in the family Cerambycidae. Adults emerge in early June and feed on dogwood twigs, causing girdling damage. Females lay eggs singly on healthy twigs; larvae bore into twigs and overwinter in stems, with some individuals taking up to two years to complete development. The species is considered a minor pest of flowering dogwood and has been recorded from additional hosts including elm, azalea, viburnum, and various fruit trees.
Obriini
Obriini is a tribe of longhorn beetles (Cerambycidae) in the subfamily Cerambycinae. The tribe is represented in Argentina by the genus Obrium, which includes at least eight species in that country. Members of this tribe are small to medium-sized cerambycids with elongated bodies.
Obrium californicum
Obrium californicum is a species of longhorn beetle in the family Cerambycidae, described by Van Dyke in 1920. It belongs to the subfamily Cerambycinae and tribe Obriini. The species is known from North America, with records from the United States. Like other members of the genus Obrium, it is likely a small to medium-sized beetle with relatively unmodified antennae.
Obrium constricticolle
Obrium constricticolle is a species of longhorn beetle (Cerambycidae) described by Schaeffer in 1908. It belongs to the tribe Obriini within the subfamily Cerambycinae. The species is known from the United States and Mexico.
Obrium discoideum
Obrium discoideum is a longhorn beetle species in the tribe Obriini, described by John Lawrence LeConte in 1873. It belongs to a genus of small to medium-sized cerambycids characterized by relatively short antennae. The species has been recorded from Central America and parts of North America.
Obrium glabrum
Obrium glabrum is a species of longhorned beetle in the family Cerambycidae, described by Josef N. Knull in 1937. It belongs to the tribe Obriini within the subfamily Cerambycinae. The species epithet "glabrum" (Latin for "smooth") suggests a relatively hairless or smooth-bodied appearance compared to congeners. Very little specific biological information has been published for this species.
Obrium maculatum
Beige Longhorned Beetle
Obrium maculatum is a species of longhorn beetle in the family Cerambycidae, described by Guillaume-Antoine Olivier in 1795. It is commonly known as the Beige Longhorned Beetle. The species is distributed across North America and Middle America, with records from Canada, the United States, and Mexico. As a member of the tribe Obriini, it belongs to a group of small to medium-sized cerambycine beetles.
Oeme
Oeme is a genus of longhorn beetles (Cerambycidae) established by Newman in 1840. The genus contains two recognized species: Oeme costata LeConte, 1873 and Oeme rigida (Say, 1826). Members of this genus are associated with coniferous trees, particularly pinyon pines. Oeme costata has been documented from single-leaf pinyon pine (Pinus monophylla) in the Spring Mountains of Nevada, where adults are active nocturnally on tree trunks. The genus belongs to the tribe Oemini within the subfamily Cerambycinae.
Oeme costata
Oeme costata is a species of longhorn beetle in the family Cerambycidae, described by John Lawrence LeConte in 1873. It belongs to the tribe Oemini and is one of approximately 17 species in the genus Oeme. The species has been documented in the southwestern United States, with observations from high-elevation pinyon-juniper woodlands. It exhibits nocturnal activity, having been observed on tree trunks at night.
Oeme rigida
Rigid Oeme
Oeme rigida is a longhorn beetle (Cerambycidae) described by Thomas Say in 1826. The species is native to western North America, with records from the United States and Mexico. Two subspecies are recognized: O. r. rigida (nominate) and O. r. deserta Casey, 1924. Adults have been collected from dead pinyon pine (Pinus edulis) branches, suggesting larval development in coniferous wood.
Oeme rigida deserta
Oeme rigida deserta is a subspecies of longhorn beetle in the family Cerambycidae, described by Casey in 1924. It belongs to the tribe Oemini within the subfamily Cerambycinae. The subspecies has been documented from western North America, with specific collection records from pinyon-oak-juniper woodland habitats. It appears to be associated with dead coniferous wood, particularly Pinus edulis (Colorado pinyon pine).
Oncideres
Twig Girdling Beetles, Twig Girdlers
Oncideres is a genus of longhorn beetles (Cerambycidae: Lamiinae) containing over 120 species distributed throughout the Nearctic and Neotropics. These beetles are commonly known as twig girdlers due to the distinctive behavior of females chewing around branches to cause them to break and fall. The larvae develop within the girdled, decomposing wood. Several species are economically significant pests of fruit trees, pecans, and forest trees, while others play roles in ecosystem engineering by altering host plant population structure.
Oncideres cingulata
twig girdler, Eastern Twig Girdler
Oncideres cingulata, commonly known as the twig girdler, is a cerambycid beetle notable for its distinctive reproductive behavior where adult females girdle twigs of host trees to create larval habitat. The beetle is brownish-gray, 13–16 mm in length, with antennae 13–25 mm long. Adults are active in late summer and fall, and females cut through bark and wood of small branches (6–12.7 mm diameter) before laying eggs in the severed portion. Larvae develop within the fallen girdled twigs, feeding on woody tissue, and complete a single yearly generation. The species is economically significant as a pest of pecan plantations and other hardwood trees.
Oncideres pustulata
Coastal Huisache Girdler
Oncideres pustulata is a species of longhorn beetle in the family Cerambycidae, described by John Lawrence LeConte in 1854. It is distributed across Mexico and the southern United States. The species is a twig girdler, with larvae that develop within girdled branches of host plants in the genera Leucaena and Prosopis. It is known to feed on Leucaena leucocephala, Leucaena pulverulenta, Prosopis alba, and Prosopis chilensis.
Oncideres rhodosticta
Mesquite Girdler
Oncideres rhodosticta is a twig-girdling longhorn beetle (Cerambycidae: Lamiinae) native to the southwestern United States and Mexico. Adults emerge in late summer (August–September) and feed on mesquite foliage. Females engage in distinctive girdling behavior, chewing complete rings through the bark and cambium of living mesquite twigs to create oviposition sites in the dying distal portions. Larvae develop within the dead twigs, completing a one-year life cycle. The species is economically significant as a pest of mesquite in rangeland and agricultural settings.
Oplosia
Oplosia is a genus of longhorn beetles (Cerambycidae) in the tribe Acanthoderini. The genus contains three described species: Oplosia cinerea, Oplosia nubila, and Oplosia suvorovi. Members of this genus belong to the subfamily Lamiinae, one of the most diverse lineages within the longhorn beetle family. The genus was established by Mulsant in 1862.
Oplosia nubila
Oplosia nubila is a longhorn beetle (Cerambycidae) described by John Lawrence LeConte in 1862. It belongs to the subfamily Lamiinae and tribe Acanthoderini. The species is native to North America, with confirmed records from Canadian provinces including Manitoba, Ontario, and Québec. As with other members of its genus, it is a wood-boring beetle whose larvae develop in dead or decaying wood.
Opsimini
Opsimini is a tribe of longhorned beetles within the subfamily Cerambycinae. The tribe comprises four genera: Dicentrus, Europsimus, Japonopsimus, and Opsimus, with a total of nine described species. Most species are geographically restricted, with distributions spanning North America, Europe, and East Asia. The tribe is characterized by relatively small body size and reduced antennal length compared to many other cerambycine tribes.
Opsimus
Opsimus is a monotypic genus of longhorn beetles (Cerambycidae) established by Mannerheim in 1843. The genus contains a single species, Opsimus quadrilineatus. It belongs to the tribe Opsimini within the subfamily Cerambycinae.
Ornithia mexicana
Ornithia mexicana is a longhorn beetle (family Cerambycidae) described by Sturm in 1843. It belongs to the subfamily Cerambycinae and tribe Dryobiini. The species occurs in Middle and North America, with documented presence in Costa Rica and Guatemala. As a member of the Cerambycidae, it is a wood-boring beetle whose larvae likely develop in dead or dying wood.
Orthochoriolaus
Orthochoriolaus is a monotypic genus of flower longhorn beetles in the family Cerambycidae, established by Linsley & Chemsak in 1976. The genus contains a single species, Orthochoriolaus chihuahuae, known from Arizona and western Mexico. It is classified within the subfamily Lepturinae and tribe Lepturini.
Ortholeptura insignis
flower longhorn
Ortholeptura insignis is a species of flower longhorn beetle in the family Cerambycidae. The species is distributed across Central America and North America, including Mexico and the United States. As a member of the subfamily Lepturinae, it is associated with flowers where adults are typically found feeding on pollen.
Ortholeptura obscura
Ortholeptura obscura is a species of flower longhorn beetle in the family Cerambycidae. It was described by Swaine & Hopping in 1928. The species is native to North America.
Orthosoma
brown prionid
Orthosoma is a monotypic genus of longhorned beetles (family Cerambycidae) containing the single species Orthosoma brunneum, commonly known as the brown prionid. The genus is classified in the subfamily Prioninae and tribe Prionini. Adults are attracted to lights and have been documented in fermenting bait traps. The genus name Orthosoma was previously used for a microsporidian genus, which has since been renamed Orthosomella due to this preoccupation.
Orthosoma brunneum
Brown Prionid
Orthosoma brunneum is a large, brown longhorned beetle in the subfamily Prioninae, commonly known as the brown prionid. It is the sole species in its genus and is widely distributed across eastern North America. Adults are nocturnal and frequently attracted to ultraviolet lights. Larvae develop in decaying logs and have been shown to tolerate and behaviorally respond to high carbon dioxide concentrations typical of their wood-boring habitat.
Orwellion
Orwellion is a genus of longhorn beetles in the family Cerambycidae, established by Skiles in 1985. The genus belongs to the tribe Elaphidiini within the subfamily Cerambycinae. It contains four described species distributed in western North America. The genus name is derived from George Orwell, the English author.
Orwellion gibbulum arizonense
Orwellion gibbulum arizonense is a subspecies of longhorn beetle in the family Cerambycidae. It belongs to the tribe Elaphidiini within the subfamily Cerambycinae. The subspecies was described by Casey in 1891 and is distributed in parts of North and Middle America. Very little specific information is documented about this particular subspecies beyond its taxonomic status and general geographic occurrence.
Osmidus
Osmidus is a genus of longhorn beetles in the family Cerambycidae, established by LeConte in 1873. The genus is monotypic, containing only the single species Osmidus guttatus. It belongs to the subfamily Cerambycinae and tribe Hesperophanini. The genus has been documented in 76 iNaturalist observations.
Osmidus guttatus
Osmidus guttatus is a species of longhorn beetle in the family Cerambycidae, described by John Lawrence LeConte in 1873. It belongs to the tribe Hesperophanini within the subfamily Cerambycinae. The species has been recorded from North America and Mexico.
Osmopleura
Osmopleura is a monotypic genus of longhorn beetles in the subfamily Cerambycinae, tribe Agallissini. The genus contains a single species, Osmopleura chamaeropis, described by George Henry Horn in 1893. It is endemic to the southeastern United States.
Osmopleura chamaeropis
Cabbage Palm Longhorn
Osmopleura chamaeropis is a longhorn beetle (Cerambycidae) and the sole species in its genus. It was described by George Henry Horn in 1893. The species is endemic to the southeastern United States, where it is associated with cabbage palm (Sabal palmetto). Its common name reflects this host relationship.
Oxymerus
Oxymerus is a genus of longhorned beetles in the family Cerambycidae, subfamily Cerambycinae, and tribe Trachyderini. The genus contains ten described species distributed exclusively in the Neotropical region, ranging from Nicaragua and the West Indies south to Bolivia and Uruguay. Species within this genus are medium to large-sized, brightly colored, and diurnal. Oxymerus aculeatus is the most widespread species and has been detected in Florida, raising concerns about potential establishment in the United States.
Oxymerus aculeatus
Oxymerus aculeatus is a medium to large-sized longhorned beetle (Cerambycidae) in the tribe Trachyderini, characterized by bright coloration and diurnal activity. The species was described by Dupont in 1838 and is the most widely distributed member of its exclusively Neotropical genus, ranging from Nicaragua and the West Indies south to Bolivia and Uruguay. Several subspecies have been described, with the nominate subspecies O. a. aculeatus occurring throughout central, eastern, and southeastern Brazil. Like most cerambycids, larvae presumably develop in dead or dying wood, though specific host plants remain undocumented. The species has been detected in Florida, raising concerns about potential establishment and economic impact as an invasive wood-boring pest.
Oxymirini
Oxymirini is a tribe of longhorn beetles (Cerambycidae) in the subfamily Lepturinae. The tribe contains a small number of genera, with Oxymira being the most notable. Members of this tribe are associated with coniferous forests and are characterized by their distinctive morphology within the flower longhorn group. The tribe has a primarily Holarctic distribution, with species found across northern regions of Eurasia and North America.
Pachyta
Pachyta is a genus of longhorn beetles (Cerambycidae) in the subfamily Lepturinae, tribe Rhagiini. The genus contains approximately 12 described species distributed across the Holarctic region. Members of this genus are associated with coniferous forests and share the characteristic short antennae and compact body form typical of the Rhagiini.
Pachyta lamed
Pachyta lamed is a Holarctic long-horned beetle (Cerambycidae) in the subfamily Lepturinae. The species occurs across northern Eurasia and North America, with two recognized subspecies: P. lamed lamed (Eurasian) and P. lamed liturata (North American). Adults are associated with coniferous trees, particularly spruce. Larvae develop in dead or decaying conifer wood, completing development over multiple years.
Parandrinae
Parandrinae is a morphologically distinctive subfamily of longhorn beetles (Cerambycidae) comprising approximately 14 genera and over 120 described species worldwide. The group is notable for its atypical features among cerambycids: short, equal-segmented antennae rather than the elongated antennae characteristic of most longhorn beetles, and distinctly pentamerous tarsi with five visible segments. These traits produce a remarkable superficial resemblance to stag beetles (Lucanidae), leading to frequent misidentification. The subfamily has a disjunct global distribution with centers of diversity in South America and Africa, while North America contains only four taxa. Two tribes are recognized: Erichsoniini and Parandrini.