Longhorned-beetle
Guides
Aegomorphus quadrigibbus
Four-humped Longhorned Beetle
Aegomorphus quadrigibbus is a longhorned beetle in the subfamily Lamiinae, originally described by Thomas Say in 1831 as Acanthoderes quadrigibba. The species is characterized by four prominent tubercles on the pronotum and distinctive heart-shaped elytral patterning. Historically associated with hardwood forests in eastern North America, it has recently emerged as an agricultural pest in Mexican Persian lime orchards. The species was transferred to the genus Aegomorphus by Yanega in 1996.
Anelaphus brevidens
Anelaphus brevidens is a species of longhorned beetle (family Cerambycidae) in the tribe Elaphidiini. It was described by Schaeffer in 1908. The genus Anelaphus includes species commonly known as twig pruners, whose larvae develop within living branches of deciduous trees and cut the branch internally before pupation. Specific biological details for A. brevidens remain poorly documented in published literature.
Anelaphus inermis
Anelaphus inermis is a species of longhorned beetle in the family Cerambycidae, described by Newman in 1840. It belongs to the tribe Elaphidiini, a group commonly known as flat-faced longhorns. The species is distributed across North America, Middle America, and the Caribbean.
Anelaphus magnipunctatus
Anelaphus magnipunctatus is a longhorned beetle in the family Cerambycidae, described by Knull in 1934. It belongs to the tribe Elaphidiini, a group commonly known as flat-faced longhorns. The species is native to North America. Like other members of the genus Anelaphus, it is likely associated with woody vegetation, though specific biological details remain poorly documented.
Anelaphus moestus moestus
Anelaphus moestus moestus is a subspecies of longhorned beetle in the family Cerambycidae. The species Anelaphus moestus belongs to the elaphidiine group of cerambycids, a diverse assemblage of small to medium-sized beetles often associated with woody vegetation. The subspecific epithet indicates this is the nominate form of the species. Records indicate presence in North America and Middle America, with documented occurrences in the United States and Mexico.
Anelaphus piceus
Anelaphus piceus is a species of longhorned beetle in the family Cerambycidae, tribe Elaphidiini. It was described by Chemsak in 1962. The genus Anelaphus, commonly known as twig pruners, includes species whose larvae bore into living branches of deciduous trees and characteristically cut the branch internally before pupation, causing the distal portion to fall to the ground.
Anelaphus subinermis
Anelaphus subinermis is a species of longhorned beetle in the family Cerambycidae, described by Linsley in 1957. It belongs to the tribe Elaphidiini, a group commonly known as flat-faced longhorns. The genus Anelaphus includes species commonly referred to as twig pruners, whose larvae develop within living branches of deciduous trees and prune the twigs before pupation. Specific details about this species' biology and host associations remain poorly documented compared to better-known congeners such as Anelaphus villosus and A. parallelus.
Anelaphus submoestus
Anelaphus submoestus is a species of longhorned beetle in the family Cerambycidae, described by Linsley in 1942. The genus Anelaphus includes several twig pruner species whose larvae develop in living branches of deciduous trees, particularly oaks. Adults are typically active in spring and early summer. The species is known from North America, including Mexico and the United States.
Arhopalus asperatus
Arhopalus asperatus is a longhorned beetle in the family Cerambycidae, described by John Lawrence LeConte in 1859. Adults range from 18 to 33 mm in length, with antennae measuring approximately 50-75% of body length. The species occurs across western North America, with records from Canada (Alberta, British Columbia, Manitoba) through the western United States. Like other members of the genus, it is associated with coniferous wood, particularly pines.
Arhopalus productus
New House Borer
Arhopalus productus is a longhorned beetle in the family Cerambycidae, commonly known as the New House Borer. It was described by John Lawrence LeConte in 1850. The species is attracted to fire and has been observed at night near campfires and on recently dead coniferous trees. It is distributed across western North America, including the Canadian provinces of Alberta, British Columbia, and Manitoba, and extends into the southwestern United States.
Arhopalus rusticus montanus
Arhopalus rusticus montanus is a subspecies of longhorned beetle in the family Cerambycidae, distributed across North America, Europe, and parts of Asia. The species is associated with coniferous forests and develops under the bark of dead or dying conifers. Adults are active during cooler periods, with some populations exhibiting winter activity patterns. This subspecies is part of a complex with Holarctic distribution, showing variation in host preferences across its range.
Arhopalus rusticus obsoletus
Arhopalus rusticus obsoletus is a subspecies of longhorned beetle in the family Cerambycidae. It belongs to a species complex with Holarctic distribution, occurring in both North America and Eurasia. The subspecies is associated with coniferous wood, where larvae develop under bark. Adults are active during warmer months and can be found on or near dead conifers.
Asemum australe
Asemum australe is a species of longhorned beetle in the family Cerambycidae, described by John Lawrence LeConte in 1850. It is native to North America, with documented occurrences in the United States and Canada including Québec. The species has a brown, oval-shaped body. As a member of the genus Asemum, it belongs to a group of wood-boring beetles whose larvae develop in coniferous wood.
Asemum caseyi
Asemum caseyi is a species of longhorned beetle in the family Cerambycidae, described by Linsley in 1957. The genus Asemum comprises conifer-associated wood-boring beetles with Holarctic distribution. Like congeners, this species likely develops in dead or dying conifer wood, with adults active during warmer months. The species has been recorded from western North America including British Columbia, California, and Mexico.
Asemum nitidum
Asemum nitidum is a species of longhorned beetle (Cerambycidae) described by John Lawrence LeConte in 1873. It is native to parts of North America, with distribution records from Canada (British Columbia) and the United States. As a member of the genus Asemum, it belongs to a group of wood-boring beetles that develop in coniferous trees. The species has been documented through 286 iNaturalist observations, indicating it is encountered with some regularity by naturalists, though detailed biological studies appear limited.
Astyleiopus variegatus
Variegated Longhorned Beetle
Astyleiopus variegatus is a species of longhorned beetle in the family Cerambycidae, representing the sole member of its monotypic genus. It has been reared from dead branches of red buckeye (Aesculus pavia) in Missouri, constituting a documented larval host record. The species is distributed across eastern and central North America, with records from Canada and the United States.
Ataxia arizonica
Ataxia arizonica is a species of longhorned beetle in the family Cerambycidae, described by Warren Samuel Fisher in 1920. The species is known from Mexico and the United States. As a member of the genus Ataxia, it belongs to a group of beetles whose larvae typically bore into plant stems and roots.
Ataxia brunnea
Ataxia brunnea is a species of longhorned beetle in the family Cerambycidae, described by Champlain and Knull in 1926. The species is known from the United States and Canada. Like other members of the genus Ataxia, it belongs to the subfamily Lamiinae (flat-faced longhorns) and tribe Pteropliini. Available information on this species is limited, with only two observations recorded in iNaturalist and minimal published biological data.
Ataxia hubbardi
Ataxia hubbardi is a longhorned beetle (Cerambycidae) described by Warren Samuel Fisher in 1924. The species is distributed across the United States and Mexico. Adults are active in fall and have been observed on flower stalks of host plants. A distinctive population associated with prairie dock (Silphium terebinthinaceum) in Missouri dolomite glades exhibits smaller, darker, and narrower body proportions compared to typical individuals.
Ataxia spinicauda
Ataxia spinicauda is a longhorned beetle (family Cerambycidae) described by Schaeffer in 1904. It belongs to the subfamily Lamiinae and tribe Pteropliini. The species has been documented from the Bahamas, Cuba, Jamaica, and the United States, indicating a Caribbean-North American distribution pattern. Like other members of the genus Ataxia, it likely develops in living plant tissues, though specific host associations for this species remain undocumented.
Batyle ignicollis
Fire-necked Longhorn Beetle
Batyle ignicollis is a longhorned beetle in the tribe Trachyderini, known for its diurnal activity and flower-visiting behavior. It was described by Thomas Say in 1824. The species has been documented in sand dune habitats of northwestern Oklahoma, where adults have been observed resting on inflorescences of Styllingia sylvatica (Queen's delight), suggesting possible crepuscular or nocturnal roosting behavior. The species is attracted to ethanol-based traps, indicating a probable association with fermenting plant materials or dead wood.
Batyle ignicollis oblonga
Batyle ignicollis oblonga is a subspecies of longhorned beetle in the family Cerambycidae, described by Casey in 1912. It belongs to the subfamily Cerambycinae and tribe Trachyderini. Field observations indicate adults are associated with flowering plants in sand dune habitats, where they have been observed resting on inflorescences.
Callidium violaceum
violet tanbark beetle
Callidium violaceum, commonly known as the violet tanbark beetle, is a longhorned beetle (family Cerambycidae) first described by Carl Linnaeus in 1758. It is one of the earliest described cerambycid species and remains taxonomically valid. The species is broadly distributed across the Northern Hemisphere, occurring in Europe, northern Asia, and North America. It is associated with coniferous woodlands and develops in dead or dying conifer wood.
Calloides lorquinii
Calloides lorquinii is a species of longhorned beetle in the family Cerambycidae, tribe Clytini. It is native to western North America. The species is named after the French entomologist Pierre Lorquin, who collected extensively in California during the 19th century. Like other members of the genus Calloides, it is associated with woody habitats and is likely attracted to fermenting baits.
Clytoleptus albofasciatus
Grape Trunk Borer
Clytoleptus albofasciatus is a longhorned beetle (family Cerambycidae) and the sole species in the genus Clytoleptus. It is commonly known as the Grape Trunk Borer. The species has been documented in North America, with records from Ontario, Québec, and other Canadian provinces, as well as the United States. It has been captured in baited jug traps using ethanol and wine mixtures, suggesting attraction to fermenting volatiles.
Crossidius ater
Grizzled Long-horned Beetle
Crossidius ater is a longhorned beetle in the family Cerambycidae, distinguished from congeners by its uniformly black coloration without the yellow, red, or orange markings typical of other Crossidius species. It was described by John Lawrence LeConte in 1861 and occurs across the Great Basin and surrounding mountainous regions of western North America. Unlike its more host-specific relatives, it utilizes multiple rabbitbrush species and shows minimal geographic variation across its range.
Crossidius coralinus
Red and Black Long-horned Beetle
Crossidius coralinus is a strikingly colored longhorned beetle in the family Cerambycidae, described by LeConte in 1862. Adults emerge in late August and September to feed and mate on yellow flowers of their larval host plant, gray rabbitbrush (Ericameria nauseosa). The species exhibits extensive geographic variation in coloration and size, with numerous described subspecies and locally distinct populations across western North America. Some populations display bright red and black coloration, while others are orange and black.
Crossidius coralinus coralinus
Crossidius coralinus coralinus is the nominate subspecies of a striking longhorned beetle endemic to western North America. Adults are active during late August and September, when they congregate on yellow flowers of their larval host plant, Ericameria nauseosa (gray rabbitbrush). The nominate subspecies is characterized by relatively large body size and extensive black markings on the elytra, particularly in females. It occurs in the southwestern Colorado region near Cortez, where some individuals exceed 20 mm in length.
Crossidius coralinus ferruginosus
Crossidius coralinus ferruginosus is a subspecies of longhorned beetle in the family Cerambycidae. It occurs in the San Joaquin Valley of California, where it is associated with the host plant Isocoma acradenia var. bracteosa. Adults exhibit considerable color variation, ranging from tan with coral-pink along the sides to dark red, with more red present in northern populations. The subspecies is part of a complex of geographically variable populations within C. coralinus that have been subject to taxonomic debate regarding subspecies validity versus potential species-level distinctions.
Crossidius coralinus fulgidus
rabbitbrush longhorned beetle
Crossidius coralinus fulgidus is a strikingly colored subspecies of longhorned beetle (Cerambycidae) endemic to the western United States. Adults are active in fall rather than spring or summer, a seasonal pattern unusual for the family. They are intimately associated with rabbitbrush and related composite shrubs, where adults feed, mate, and shelter among the yellow flowers. Males possess exceptionally long antennae relative to females. This subspecies exhibits the bright red and black coloration characteristic of the C. coralinus complex.
Crossidius coralinus jocosus
Crossidius coralinus jocosus is a subspecies of longhorned beetle in the tribe Trachyderini, endemic to North America. It is characterized by its notably small size compared to other C. coralinus subspecies and reduced black elytral markings. Adults emerge in late summer and early fall to feed on yellow flowers of gray rabbitbrush (Ericameria nauseosa). The subspecies occurs in southeastern Colorado, where it appears to be isolated from nominotypical populations by the San Juan Mountains.
Crossidius coralinus ruficollis
Crossidius coralinus ruficollis is a subspecies of longhorned beetle (Cerambycidae) endemic to the southern San Joaquin Valley of California. It is one of several geographically isolated subspecies of C. coralinus characterized by red and black coloration. Adults are active in late summer and early fall, feeding on flowers of Isocoma acradenia var. bracteosa (burrobrush). Historically isolated from the nominate subspecies by the now-dry Tulare Lake, this population exhibits distinct coloration with individuals ranging from tan to dark red depending on locality.
Crossidius coralinus temprans
Crossidius coralinus temprans is a subspecies of longhorned beetle in the tribe Trachyderini, described by Linsley & Chemsak in 1961. It is distinguished from other C. coralinus subspecies by its deep red coloration with faint bluish overtones, relatively fine but dense elytral punctation, and smaller average size. Females exhibit broadly expanded black elytral patterns extending along the suture to at least the basal third of the elytra and black humeri connected by a basal band, while males typically show reduced black markings. The subspecies occurs in sagebrush grasslands of western Nevada and Lassen County, California, where adults are found on flower heads of gray rabbitbrush (Ericameria nauseosa).
Crossidius discoideus
Orange-bracketed Longhorned Beetle
Crossidius discoideus is a species of longhorned beetle in the family Cerambycidae, described by Thomas Say in 1824. Adults are notable for their striking orange-and-black coloration, which closely mimics that of toxic soldier beetles (Chauliognathus spp.) and blister beetles (Epicauta spp.) through Batesian mimicry. The species is strongly associated with flowers of Gutierrezia sarothrae (broom snakeweed), where adults feed on pollen and nectar. Larvae develop in the root crowns of broom snakeweed and related Isocoma species (Jimmyweed).
Crossidius discoideus sayi
Crossidius discoideus sayi is a subspecies of longhorned beetle in the family Cerambycidae, native to western North America. It is recognized as a Batesian mimic of toxic soldier beetles (Chauliognathus spp.), sharing their characteristic orange and black color pattern despite being harmless itself. Adults are active in late summer and early fall, feeding on flower pollen and nectar, particularly from Gutierrezia sarothrae (broom snakeweed). The larvae develop as root-crown borers in their host plants.
Crossidius grahami
Ohoopee Dunes Crossidius Beetle
Crossidius grahami is a longhorned beetle (Cerambycidae) described in 2013 from southern Georgia. It is restricted to a highly specific host plant, woody goldenrod (Chrysoma pauciflosculosa), a perennial asteraceous shrub of coastal sand dunes and scrub. The species was discovered incidentally when collectors reared adults from root crowns while attempting to rear a different undescribed cerambycid. Adults are found primarily on lower stems of living plants.
Crossidius hirtipes allgewahri
Crossidius hirtipes allgewahri is a subspecies of longhorned beetle described by LeConte in 1878. It belongs to the highly polytopic and morphologically variable species C. hirtipes, which comprises 16 recognized subspecies distributed across the Great Basin and adjacent regions of western North America. The subspecies epithet honors Allgewahr, likely a collector or colleague of LeConte. Like other members of the genus, it is associated with rabbitbrush (Chrysothamnus/Ericameria) host plants.
Crossidius hirtipes nigripennis
Crossidius hirtipes nigripennis is a subspecies of the highly variable longhorned beetle Crossidius hirtipes, described by Chemsak & Linsley in 1959. As one of 16 recognized subspecies within C. hirtipes, it represents part of a complex taxonomic group characterized by extensive variation in coloration, elytral pattern, and pubescence across the Great Basin region. The subspecies epithet "nigripennis" suggests distinctive dark or black wing covers (elytra), though specific diagnostic features for this taxon are not detailed in the provided sources. Like other C. hirtipes subspecies, adults are associated with rabbitbrush host plants (Chrysothamnus/Ericameria species). The taxonomic status of C. hirtipes subspecies remains under investigation, with ongoing molecular studies seeking to clarify whether these represent distinct species, subspecies, or elements of a single highly variable population.
Desmocerus californicus
California Elderberry Borer, Valley Elderberry Longhorn Beetle
Desmocerus californicus is a longhorned beetle endemic to the United States, with two recognized subspecies. The nominate subspecies D. c. californicus occurs in California, while D. c. dimorphus (the valley elderberry longhorn beetle) is restricted to the Central Valley of California and is federally listed as threatened. Adults are active for only a few weeks per year and feed on Sambucus pollen.
Dryobius sexnotatus
Six-banded Longhorn Beetle
Dryobius sexnotatus is a species of longhorned beetle (Cerambycidae) and the sole member of its monospecific genus. It is endemic to North America. The species has been documented as a host for phoretic pseudoscorpions, which attach to adult beetles for dispersal.
Elaphidion clavis
Elaphidion clavis is a species of longhorned beetle in the family Cerambycidae, described by Linsley in 1957. It belongs to the diverse genus Elaphidion within the tribe Elaphidiini. Very little specific biological information has been published for this species. Like other members of its genus, it likely develops in dead or dying hardwoods, though direct host associations remain undocumented.
Elaphidion cryptum
Elaphidion cryptum is a species of longhorned beetle in the family Cerambycidae, described by Linsley in 1963. It belongs to the diverse genus Elaphidion, which contains numerous North American species. Very little specific information has been published about this particular species. The genus Elaphidion is part of the tribe Elaphidiini, a group of cerambycine beetles whose larvae typically develop in dead hardwoods.
Elaphidion linsleyi
Elaphidion linsleyi is a species of longhorned beetle in the family Cerambycidae, described by Knull in 1960. The species belongs to the genus Elaphidion, a diverse group of cerambycine beetles distributed primarily in the Americas. Like other members of the tribe Elaphidiini, this species is characterized by its elongated antennae and association with woody vegetation. The specific epithet honors E. Gorton Linsley, a prominent American coleopterist who made substantial contributions to the taxonomy of North American Cerambycidae.
Elaphidion mimeticum
Elaphidion mimeticum is a species of longhorned beetle in the family Cerambycidae, described by Schaeffer in 1905. It belongs to the genus Elaphidion, a group of elaphidiine cerambycids characterized by relatively small to medium size and often cryptic coloration. The species is known from Middle and North America, with records from Belize and Guatemala.
Elaphidion mucronatum
Spined Oak Borer
Elaphidion mucronatum is a longhorned beetle in the family Cerambycidae, commonly known as the spined oak borer. Despite its common name, it is one of the most polyphagous wood-boring beetles in North America, developing in dead wood of numerous tree species across multiple plant families. The species is frequently encountered in the eastern and central United States, where adults are attracted to fermenting baits and can be observed in mate-guarding situations on tree trunks.
Elytrimitatrix undata
Wavy Longhorn Beetle
Elytrimitatrix undata is the only member of the subfamily Disteniinae (or family Disteniidae) occurring in the United States. This longhorned beetle was formerly classified in the genus Distenia but was split out by Santos-Silva & Hovore in 2007 based on morphological differences. The species occurs broadly across eastern and central North America and is regularly attracted to lights during warm summer nights. Adults are moderate-sized beetles with distinctive wavy elytral patterns.
Elytroleptus apicalis
Elytroleptus apicalis is a longhorned beetle species in the family Cerambycidae, described by LeConte in 1884. The species is a documented lycid beetle mimic and has been recorded as predaceous on its own lycid models (family Lycidae), making it one of only three Elytroleptus species known to exhibit this behavior. The genus Elytroleptus contains fifteen species distributed across the southwestern United States, Mexico, and Central America.
Elytroleptus divisus
Elytroleptus divisus is a longhorned beetle species in the family Cerambycidae, originally described by John Lawrence LeConte in 1884. The species was previously known as Elytroleptus dichromaticus until that name was synonymized with E. divisus in a 2013 taxonomic revision. The species exhibits intraspecific polychromatic variation in coloration. Like other members of its genus, E. divisus is a lycid beetle mimic, displaying orange and black coloration that resembles the aposematic warning coloration of distasteful net-winged beetles (family Lycidae). The genus Elytroleptus is distributed throughout the southwestern United States, Mexico, and Central America, with most species occurring in arid and semi-arid regions.
Elytroleptus limpianus
Elytroleptus limpianus is a longhorned beetle species in the family Cerambycidae, described by Skiles & Chemsak in 1982. It belongs to the genus Elytroleptus, which comprises fifteen species distributed across the southwestern United States, Mexico, and Central America. This species is notable as one of three Elytroleptus species documented to be predaceous on their own lycid beetle models, functioning as both a Batesian mimic and an active predator of the beetles it resembles.
Enaphalodes cortiphagus
Enaphalodes cortiphagus is a species of longhorned beetle in the family Cerambycidae, described by Craighead in 1923. It belongs to the tribe Elaphidiini and is considered rare in collections. The species has been documented at select locations in eastern North America, including Trail of Tears State Park in Missouri, where it occurs in mesic forest habitats with eastern tree species.