Longhorned-beetle
Guides
Euderces pini
Euderces pini is a small longhorned beetle in the family Cerambycidae, notable for its striking ant-mimicking appearance. Adults measure 7–8 millimeters in length with slender bodies. The species occurs in the southern half of the eastern United States, with adults active from March to June. Larvae develop in various hardwood trees including Flowering Dogwood, Pecan, Winged Elm, and American Beech. Adults frequently visit flowers to feed on pollen and nectar, including dandelions before native trees bloom. The species is not considered an agricultural or forestry pest.
Eupogonius tomentosus
Tomentous Longhorned Beetle
Eupogonius tomentosus is a longhorned beetle (Cerambycidae) described by Haldeman in 1847. It is one of approximately 40 species in the genus Eupogonius, which is characterized by small to medium-sized beetles with dense pubescence. The species has not been evaluated for conservation status. It occurs in Canada and the United States, excluding Hawaii and Alaska.
Hemierana rileyi
Hemierana rileyi is a species of longhorned beetle in the family Cerambycidae, described in 2019. The species belongs to the subfamily Lamiinae and tribe Hemilophini. It is part of a genus of Neotropical flat-faced longhorned beetles. The specific epithet honors an individual named Riley, following the Latinized naming convention for patronyms based on male names.
Judolia gaurotoides
Black-banded Long-horned Beetle
Judolia gaurotoides is a species of longhorned beetle in the family Cerambycidae, described by Casey in 1893. It belongs to the subfamily Lepturinae, a group commonly known as flower longhorns. The species is known from North America, with records from both Canada and the United States. As a member of the genus Judolia, it shares characteristics with other small to medium-sized lepturines that are often associated with flowers and decaying wood.
Judolia quadrata
Judolia quadrata is a species of longhorned beetle in the family Cerambycidae, subfamily Lepturinae. First described by John Lawrence LeConte in 1873, it belongs to a genus of Holarctic flower longhorns. The species is distributed across northern North America including Canada and the northern United States.
Mallodon dasystomus
hardwood stump borer
Mallodon dasystomus is a large prionine longhorned beetle native to the southern United States, ranging through Mexico and Central America to northern South America. Adults measure 35–50 mm in length and possess conspicuously hairy mouthparts that inspired the species epithet (from Greek dasus 'hairy' and stoma 'mouth'). The species is strongly associated with hardwood trees, particularly sycamores, and larvae develop in dead or dying wood. Both sexes use volatile semiochemicals for host location, while females produce a sex pheromone that attracts males.
Malobidion brunneum
Malobidion brunneum is a species of longhorned beetle in the family Cerambycidae, described by Schaeffer in 1908. It belongs to the subfamily Cerambycinae and tribe Hesperophanini. The species is known from North and Middle America, with records from the United States and Mexico. Very little specific biological information is documented for this species.
Mannophorus laetus
Pleasant Aster Bycid
Mannophorus laetus is a species of longhorned beetle in the family Cerambycidae, described by John Lawrence LeConte in 1854. It belongs to the tribe Trachyderini, a group known for often bright coloration and association with flowers. The species is found in North America, particularly the southwestern United States and Mexico. Adults are frequently observed on flowers of Asteraceae, where they feed on pollen and nectar.
Mecas bicallosa
Mecas bicallosa is a species of longhorned beetle in the family Cerambycidae, first described by Martin in 1924. The species occurs in North and Central America. Like other members of the genus Mecas, it is associated with plants in the sunflower family (Asteraceae), where larvae bore into stems and roots.
Mecas confusa
Poplar Gall Borer
Mecas confusa is a longhorned beetle in the family Cerambycidae, described by Chemsak and Linsley in 1973. The species is known from the United States and Mexico. Its common name, Poplar Gall Borer, suggests an association with poplar trees, though specific biological details remain poorly documented.
Mecas pergrata
Mecas pergrata is a longhorned beetle in the family Cerambycidae, described by Thomas Say in 1824. Adults are 6–12 mm in length with gray pubescence. The species is a stem- and root-borer that exploits plants in the sunflower family (Asteraceae), including cultivated sunflowers. It is known from Mexico and the United States.
Megacyllene caryae
painted hickory borer, hickory borer
Megacyllene caryae, known as the painted hickory borer or hickory borer, is a longhorned beetle species in the family Cerambycidae. It occurs in the eastern United States and has been introduced to the Marquesas Islands in French Polynesia. Adults are active exclusively in spring, emerging from dead hickory wood as temperatures warm. The species is frequently misidentified as the closely related locust borer (M. robiniae) due to their nearly identical appearance, though they differ in seasonality, host plants, and subtle morphological characters.
Megacyllene decora
Amorpha borer
Megacyllene decora, commonly known as the Amorpha borer, is a striking longhorned beetle distinguished by bold black and yellow banding. Adults are active in late summer and fall, feeding primarily on goldenrod (Solidago) and snakeroot (Eupatorium) flowers. The species is considerably less common than its congener M. robiniae due to the restricted distribution of its larval host plant, false indigo (Amorpha fruticosa).
Megacyllene robusta
Megacyllene robusta is a longhorned beetle (family Cerambycidae) described in 1963 from Arizona. It belongs to a genus of wood-boring beetles whose members typically exhibit yellow and black banded coloration resembling wasps. The species is poorly known, with minimal published biological information and few documented observations.
Methia necydalea
Methia necydalea is a species of longhorned beetle (family Cerambycidae) described by Johan Christian Fabricius in 1798. It is classified in the subfamily Cerambycinae and tribe Methiini. The species has been documented in Caribbean localities including Barbados (BB) and Bonaire, Sint Eustatius and Saba (BQ). As of the available data, 322 observations have been recorded on iNaturalist.
Molorchus bimaculatus bimaculatus
ant-mimic longhorned beetle
Molorchus bimaculatus bimaculatus is a small longhorned beetle in the family Cerambycidae, notable for its striking resemblance to ants—a clear example of Batesian mimicry. Adults measure less than 10 mm and are commonly encountered in early spring on flowering trees, particularly flowering dogwood (Cornus florida). The species belongs to a genus well-known among ant-mimicking cerambycids, though it can be distinguished from similar genera by specific morphological features. Its distribution includes parts of North America, with records from the eastern United States and Canada.
Monochamus clamator latus
Spotted Pine Sawyer
Monochamus clamator latus is a subspecies of the spotted pine sawyer, a large longhorned beetle in the family Cerambycidae. Adults are active during summer months and are attracted to blacklights. The species breeds in dead, dying, or stressed coniferous trees, particularly pines. Adults have been observed on trunks of stressed Pinus ponderosa, with males exhibiting mate-guarding behavior.
Monochamus clamator nevadensis
Spotted Pine Sawyer
Monochamus clamator nevadensis is a subspecies of the spotted pine sawyer, a longhorned beetle in the family Cerambycidae. It belongs to a genus of large woodboring beetles that infest coniferous trees, particularly pines. The subspecies was described by Dillon & Dillon in 1941 and is distributed in western North America, including Nevada and surrounding regions. Like other Monochamus species, it develops in dead, dying, or stressed coniferous wood and is attracted to blacklights at night.
Monochamus clamator rubigineus
Spotted Pine Sawyer (for species complex)
Monochamus clamator rubigineus is a subspecies of longhorned beetle in the family Cerambycidae, described by Bates in 1880. It belongs to the Spotted Pine Sawyer species complex, which are large woodboring beetles associated with coniferous forests. Adults are active during summer months and are attracted to blacklights. The species breeds in dead, dying, or stressed pine trees.
Monochamus maculosus
spotted pine sawyer
Monochamus maculosus, the spotted pine sawyer, is a longhorned beetle native to North America. It was formerly known as Monochamus mutator. Adults are attracted to monochamol, a sex-aggregation pheromone produced by males. The species breeds in stressed or recently dead conifers, with larvae tunneling in phloem and sapwood. It is a primary vector of the pinewood nematode, the causal agent of pine wilt disease.
Monochamus notatus
northeastern pine sawyer, notable sawyer
Monochamus notatus is a large longhorned beetle (Cerambycidae) native to North America, occurring in Canada and the United States east of the Rocky Mountains. Adults are active from late spring through summer and are attracted to dead and dying conifers, particularly pines. The species is notable for its pronounced sexual dimorphism: males possess antennae up to twice their body length and elongated forelegs with expanded tarsi, while females have shorter antennae and unmodified legs. Like other Monochamus species, it responds to the aggregation pheromone monochamol and male-produced 2-(undecyloxy)-ethanol for mate location.
Monochamus obtusus
Monochamus obtusus is a longhorned beetle (family Cerambycidae) described by Thomas Lincoln Casey Jr. in 1891. It belongs to a genus of sawyer beetles that develop as wood-borers in coniferous trees. The species is known from western North America, with records from British Columbia, Canada and the western United States. Two subspecies have been recognized: M. o. obtusus (the nominate form) and M. o. fulvomaculatus described by Linsley & Chemsak in 1983. Like other Monochamus species, it likely plays a role in forest nutrient cycling through its association with dead and dying conifer wood.
Monochamus titillator
Southern Pine Sawyer
Monochamus titillator is a large longhorned beetle native to the United States, commonly known as the southern pine sawyer. Adults are notable for their elongated antennae, particularly in males, which may exceed body length. The species develops in pine trees and has been documented to respond to kairomones produced by bark beetles, suggesting ecological interactions with these forest pests. Larvae produce distinctive acoustic signals detectable in the 1000-2800 Hz range, a trait that has been explored for detecting southern pine beetle infestations.
Neandra marginicollis
Neandra marginicollis is a species of longhorned beetle in the family Cerambycidae, subfamily Parandrinae. It is one of two subspecies recognized within the species Neandra marginicollis, with the nominate subspecies N. marginicollis marginicollis described by Schaeffer in 1929 alongside the subspecies N. marginicollis punctillata. The species is found in North America. Members of this genus are unusual among cerambycids for their short, bead-like antennae and large, forward-projecting mandibles that give them a superficial resemblance to stag beetles.
Neoclytus approximatus
Neoclytus approximatus is a longhorned beetle (Cerambycidae) described by John Lawrence LeConte in 1862. It is among the most uncommonly encountered longhorned beetles in North America, with a disjunct distribution across the Great Plains and scattered records from the eastern United States. The species' larval host plant remains unknown, making it one of the most elusive cerambycids on the continent.
Neoclytus augusti
Neoclytus augusti is a species of longhorned beetle in the family Cerambycidae, described by Chevrolat in 1835. It belongs to the tribe Clytini, a group known for wasp-mimicking species with rapid, jerky movements. The species occurs in Middle America and North America, including Guatemala and Mexico. Specific details about its biology, host plants, and life history remain poorly documented in available literature.
Neoclytus interruptus
Neoclytus interruptus is a species of longhorned beetle in the family Cerambycidae, described by John Lawrence LeConte in 1873. Like other members of the genus Neoclytus, it likely exhibits wasp-mimic coloration with contrasting light and dark markings. The species is recorded from North America, though specific details about its biology and host associations remain poorly documented compared to better-known congeners such as N. caprea and N. acuminatus.
Neoclytus modestus
Neoclytus modestus is a species of longhorned beetle in the family Cerambycidae, described by Fall in 1907. It belongs to the tribe Clytini, a group known for wasp-mimicking species with rapid, jerky movements. The species is poorly documented in the literature compared to congeners such as N. caprea and N. acuminatus. Its distribution includes parts of North America, though specific details remain limited.
Neoclytus mucronatus vogti
Neoclytus mucronatus vogti is a subspecies of longhorned beetle in the family Cerambycidae, described by Linsley in 1957. It belongs to the tribe Clytini within the subfamily Cerambycinae. The subspecies is known from southwestern North America, with records from California and Mexico. Like other members of the genus Neoclytus, it is associated with woody plants and has been observed on western soapberry (Sapindus saponaria ssp. drummondii) in sand shrubland habitats.
Neoclytus muricatulus
Neoclytus muricatulus is a species of longhorned beetle in the family Cerambycidae, tribe Clytini. Like other members of the genus Neoclytus, it exhibits wasp-mimicry through rapid movement and contrasting color patterns. The species is recorded from Canada and the United States. Specific details regarding its biology, host associations, and ecology remain poorly documented in published literature.
Neoclytus senilis
Neoclytus senilis is a longhorned beetle in the family Cerambycidae, described by Johan Christian Fabricius in 1798. As a member of the genus Neoclytus, it likely exhibits wasp-mimic coloration and rapid movement characteristic of this group. The species has been recorded from the Bahamas, Cuba, and the Cayman Islands.
Neoclytus vanduzeei
Neoclytus vanduzeei is a species of longhorned beetle in the family Cerambycidae, described by Van Dyke in 1927. It belongs to the tribe Clytini, a group well-known for wasp-mimicry and rapid, erratic movement patterns. The genus Neoclytus contains approximately 25 species in North America, many of which are associated with dead or dying hardwood trees. Specific ecological details for N. vanduzeei remain poorly documented compared to better-studied congeners such as N. caprea and N. acuminatus.
Neomallodon arizonicus
Neomallodon arizonicus is a species of longhorned beetle in the family Cerambycidae, subfamily Prioninae. Originally described by Casey in 1912 under a different name, it was later recognized as a distinct species by Skiles in 1978. The species is found in the southwestern United States and Mexico, with records from Arizona, New Mexico, and Oklahoma. It is among the larger species in the genus and is associated with oak woodland habitats, particularly Gambel oak (Quercus gambelii). Adults are attracted to prionic acid lures and exhibit distinctive searching behavior when attempting to locate pheromone sources.
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 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.
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.
Parandra polita
Parandra polita is an unusual longhorned beetle belonging to the archaic subfamily Parandrinae. It exhibits a remarkable convergence with stag beetles (family Lucanidae) in appearance, featuring chestnut-brown coloration and large, forward-projecting mandibles. The species is uncommon and poorly known, with most records coming from blacklight collections in wet bottomland forests. It is one of only four parandrine taxa in North America and can be distinguished from the similar Neandra brunnea by its contiguous triangular mandibles and entire (non-emarginate) eyes.
Parelaphidion aspersum
Parelaphidion aspersum is a species of longhorned beetle in the family Cerambycidae, described by Haldeman in 1847. It belongs to the tribe Elaphidiini and is known to occur in North America. The species has been documented in Canada (Ontario and Québec) and the United States. It has been collected using fermenting bait traps, with 26 specimens recorded in a 2015 Missouri study using molasses/beer and red wine baits.
Parelaphidion incertum
Parelaphidion incertum is a species of longhorned beetle in the family Cerambycidae, described by Newman in 1840. It belongs to the tribe Elaphidiini, a diverse group of cerambycine beetles. The species is known from North America, with records from both Canada and the United States. Information regarding its biology, host associations, and detailed distribution remains limited in the available literature.
Perarthrus linsleyi
Perarthrus linsleyi is a species of longhorned beetle in the family Cerambycidae, described by Knull in 1942. The species is associated with creosote bush (Larrea tridentata) in arid and semi-arid environments. Adults feed on creosote bush flowers and mate on flowers and foliage. The species exhibits a scramble competition mating system characterized by male-wide ranging search behavior and absence of resource or mate defense.
Phymatodes blandus
Phymatodes blandus is a species of longhorned beetle in the family Cerambycidae. It is found in the United States. The species was formerly divided into subspecies, with P. blandus concolor recognized as a full species following nomenclatural revisions by Swift and Ray (2010).
Phymatodes huetheri
Phymatodes huetheri is a species of longhorned beetle (family Cerambycidae) described in 2019 by Wappes and Santos-Silva. It belongs to the genus Phymatodes, a group of woodboring beetles most diverse in western North America. The species was recently described and appears to have limited published biological information available.
Physocnemum violaceipenne
Physocnemum violaceipenne is a species of longhorned beetle in the family Cerambycidae, subfamily Cerambycinae, and tribe Callidiini. The species was described by Hamilton in 1896. It belongs to a genus whose members are known for ant- or wasp-mimicking appearance and behavior, though specific details for this particular species remain poorly documented in the available literature. The genus name Physocnemum refers to the swollen or enlarged scape of the antennae characteristic of these beetles.
Placoschema dimorpha
Placoschema dimorpha is a small longhorned beetle (family Cerambycidae) and the sole member of its genus. Described from Mexico in 2010, it represents a significant range extension as the first U.S. record was documented from southeastern Arizona in 2013. The species exhibits pronounced sexual dimorphism in coloration: males have black elytra with red lateral margins on the basal half, while females have entirely reddish elytra or at most a darker apical fascia. At approximately 10 mm in length, its diminutive size and somber coloration contrast sharply with the typically large, colorful members of the tribe Trachyderini.
Plectrodera scalator
Cottonwood Borer
Plectrodera scalator, commonly known as the Cottonwood Borer, is a large and striking longhorned beetle (Cerambycidae) native to North America. It is the sole species in the genus Plectrodera. Adults are immediately recognizable by their robust body and distinctive checkered pattern of dense white pubescence on a glossy black background. The species is strongly associated with cottonwood (Populus deltoides) and other Populus species, where adults are most frequently encountered. Despite being described as common in the Great Plains, direct observations remain relatively infrequent, possibly due to cryptic behavior against foliage backgrounds.
Plinthocoelium
Plinthocoelium is a genus of longhorned beetles (Cerambycidae) in the tribe Callichromatini. The genus contains approximately 9 species distributed across North America, Central America, and the Caribbean. The most well-known species, Plinthocoelium suaveolens, is notable for its large size, brilliant iridescent green coloration, and extremely long orange-and-black banded legs. Members of this genus are associated with woody plants in the family Sapotaceae, particularly Sideroxylon species.
Plinthocoelium suaveolens plicatum
Bumelia Borer
Plinthocoelium suaveolens plicatum is the western subspecies of a striking longhorned beetle distributed from Texas west to New Mexico, Arizona, and northern Mexico. Distinguished from the nominate eastern subspecies by bronze or cupreous tints and weak transverse rugae on the pronotum, this beetle exhibits brilliant iridescent green coloration with contrasting orange and black legs. Larvae develop in the roots of living Sideroxylon lanuginosum (gum bumelia), with adults active during summer months. The subspecies intergrades with P. s. suaveolens in northeastern Texas.
Plionoma rubens
Plionoma rubens is a species of longhorned beetle in the family Cerambycidae, described by Thomas L. Casey in 1891. It belongs to the tribe Trachyderini, a group known for bright coloration, diurnal activity, and attraction to flowers. The species occurs in the southwestern United States and northern Mexico, with records from Texas west to California. Like other members of its genus, adults are associated with mesquite and other woody legumes.
Prionus arenarius
sandwalker prionid
Prionus arenarius is a species of longhorned beetle in the family Cerambycidae, first described by Hovore in 1981. It belongs to the subfamily Prioninae, a group of large, robust beetles commonly known as prionids or sawyers. The species is associated with sandy habitats, as suggested by its specific epithet "arenarius" (Latin for "of sand"). Field observations indicate it is attracted to prionic acid pheromone lures, with males being strong fliers active at dusk and early night, while females are rarely encountered and appear to be flightless.
Prionus cuneatus
Prionus cuneatus is a species of longhorned beetle in the family Cerambycidae, subfamily Prioninae. The species was described by Casey in 1924 and is currently considered a synonym of Prionus imbricornis in some taxonomic databases. Like other members of the genus Prionus, it is a root-boring beetle with subterranean larvae. The species belongs to a genus that has been the focus of recent collecting efforts in the Great Plains using synthetic prionic acid pheromone lures.