Longhorn-beetle
Guides
Phymatodes nitidus
sequoia cone borer
Phymatodes nitidus is a longhorn beetle (family Cerambycidae) native to western North America. The species is notable for its specialized reproductive association with conifers, specifically laying eggs on giant sequoia and coast redwood cones. Larvae burrow into these cones to develop. The species was described by LeConte in 1874. Phymatodes mojavensis was synonymized under P. nitidus in 2010.
Phymatodes obliquus
Phymatodes obliquus is a species of longhorn beetle in the family Cerambycidae. It was formerly confused with P. decussatus due to misapplication of that name by Linsley (1964), but was correctly identified as a distinct species by Swift & Ray (2010). The species is primarily associated with oak (Quercus) hosts in western North America.
Phymatodes vilitatis
Phymatodes vilitatis is a species of longhorn beetle in the family Cerambycidae, first described by Linsley in 1940. It is distributed in the United States. The genus Phymatodes is part of the tribe Callidiini within the subfamily Cerambycinae. Like other members of this genus, it is associated with woody plants, though specific host relationships for this species remain poorly documented.
Pidonia scripta
Pidonia scripta is a species of longhorn beetle in the family Cerambycidae, described by John Lawrence LeConte in 1869. It belongs to the subfamily Lepturinae, commonly known as flower longhorns. The species is native to western North America and has been documented in both Canada and the United States.
Piezocera monochroa
Piezocera monochroa is a species of longhorn beetle (family Cerambycidae) described by Henry Walter Bates in 1885. It belongs to the tribe Piezocerini within the subfamily Cerambycinae. The species is known from limited records in Central America, with distribution confirmed in Costa Rica, Guatemala, and Honduras.
Piodes
Piodes is a monotypic genus of longhorn beetles (Cerambycidae) established by LeConte in 1850. It contains a single species, Piodes coriacea, distributed in the United States. The genus is classified in the subfamily Lepturinae and tribe Rhagiini.
Placosternus difficilis
Mesquite Borer
Placosternus difficilis is a wood-boring longhorn beetle in the family Cerambycidae. Adults exhibit Batesian mimicry, resembling black and yellow wasps. The species is strongly associated with mesquite trees (Prosopis spp.), though it has been recorded from multiple host plants and is considered polyphagous. Adults feed on nectar and pollen. The species ranges from the southwestern United States through Mexico and into Central America and the Caribbean.
Plectromerus dentipes
tooth-footed bycid
Plectromerus dentipes is a species of longhorn beetle (Cerambycidae) first described by Olivier in 1790. It is commonly known as the tooth-footed bycid. The species occurs across North America, the Caribbean, and the Bahamas. As a member of the subfamily Cerambycinae and tribe Plectromerini, it represents a typical cerambycid lineage within the diverse longhorn beetle fauna of the region.
Plectrura spinicauda
Thorn-tailed Longhorn Beetle
Plectrura spinicauda, commonly known as the Thorn-tailed Longhorn Beetle, is a species of longhorn beetle in the family Cerambycidae. It was first described in 1845 (authored as Mannerheim, 1852). The species occurs in northwestern North America, with records from Alaska, British Columbia, and adjacent regions. It is a member of the subfamily Lamiinae and tribe Parmenini.
Plesioclytus
Plesioclytus is a genus of longhorn beetles in the family Cerambycidae, established by Giesbert in 1993. The genus is monotypic, containing only Plesioclytus relictus. It belongs to the tribe Plesioclytini, which was erected to accommodate this genus. The genus is classified within the subfamily Cerambycinae.
Plesioclytus morrisi
Plesioclytus morrisi is a longhorn beetle species in the family Cerambycidae, described by Wappes and Skelley in 2015. It was previously known as Aegomorphus morrisii. The species has been documented in Mississippi, where specimens were collected in prairie habitats. It is considered uncommon and was historically known from very few specimens.
Plesioclytus relictus
Plesioclytus relictus is a species of longhorn beetle in the family Cerambycidae, first described by Giesbert in 1993. The species name 'relictus' suggests a relictual distribution, though specific details about its biology remain poorly documented. It belongs to the tribe Plesioclytini within the subfamily Cerambycinae.
Poecilobrium chalybeum
Poecilobrium chalybeum is a small longhorn beetle and the sole species in the monotypic genus Poecilobrium. It was first described from California in 1873 by John Lawrence LeConte. The genus was established by Horn in 1883. Records indicate presence in California, Mexico, and the broader United States.
Pogonocherus pictus
Pogonocherus pictus is a species of longhorn beetle (family Cerambycidae) described by Fall in 1910. The species is known from Canada and the United States, with records from Alberta, British Columbia, Ontario, and Québec. As a member of the subfamily Lamiinae, it belongs to a diverse group of wood-boring beetles, though specific details about its biology and ecology remain poorly documented.
Poliaenus californicus
Poliaenus californicus is a species of longhorn beetle in the family Cerambycidae, described by Schaeffer in 1908. It belongs to the subfamily Lamiinae and tribe Pogonocherini. The species is known from the United States, with records indicating presence in North America.
Poliaenus negundo
Poliaenus negundo is a species of longhorn beetle in the family Cerambycidae, first described by Schaeffer in 1905. The species is known from Mexico and the United States. As a member of the subfamily Lamiinae and tribe Pogonocherini, it belongs to a group of beetles commonly associated with woody plants. Information regarding its biology, host associations, and specific habitat requirements remains limited in published literature.
Prionus laticollis
broad-necked root borer, broad necked prionus
Prionus laticollis, commonly known as the broad-necked root borer, is a large root-boring longhorn beetle native to eastern North America. The species is a significant economic pest of apple orchards, where larvae tunnel through roots causing structural damage to trees. Adults are primarily nocturnal, with males attracted to lights and females using an elongated ovipositor to deposit eggs in soil. The species exhibits strong sexual dimorphism, with females substantially larger than males. The life cycle spans 3-4 years, with larvae developing underground while feeding on tree roots.
Prionus palparis
Prionus palparis is a species of longhorn beetle in the family Cerambycidae, first described by Thomas Say in 1824. It belongs to the subfamily Prioninae, a group of large, robust beetles commonly known as prionids or sawyers. The species has been recorded from sand dune habitats in the southwestern United States, particularly in New Mexico. Like other members of the genus Prionus, males are attracted to prionic acid, a sex pheromone component used in field studies to detect and collect specimens.
Prionus pocularis
Tooth-necked Longhorn Beetle
Prionus pocularis is a large longhorn beetle in the subfamily Prioninae, distributed across southeastern North America with its northwestern range limit in the Ozark Highlands of Missouri. The species is strongly associated with shortleaf pine forests, where larvae develop in decaying pine wood. Adults are nocturnal and have been documented responding to prionic acid pheromone lures, a trait shared with other Prionus species.
Pronocera collaris collaris
Pronocera collaris collaris is a subspecies of longhorn beetle (Cerambycidae) in the tribe Callidiini. It is currently considered a synonym of Pronocera collaris. The species is native to North America, with records from Canada and the United States. As a member of the Cerambycinae subfamily, it belongs to a diverse group of wood-boring beetles, though specific biological details for this subspecies remain poorly documented.
Pronocera collaris lecontei
A subspecies of longhorn beetle in the family Cerambycidae, originally described by Chemsak in 1963. It belongs to the tribe Callidiini within the subfamily Cerambycinae. The subspecies epithet 'lecontei' honors the prominent American entomologist John Lawrence LeConte.
Pseudastylopsis nebulosus
Pseudastylopsis nebulosus is a longhorn beetle species in the family Cerambycidae, described by George Henry Horn in 1880. It belongs to the subfamily Lamiinae (flat-faced longhorns) and tribe Acanthocinini. The species is known from North America, with records from the United States. Like other members of its genus, it is a wood-boring beetle with larvae that develop in dead or dying wood.
Pseudastylopsis nelsoni
Pseudastylopsis nelsoni is a species of longhorn beetle (Cerambycidae) in the subfamily Lamiinae. It was described by Linsley and Chemsak in 1995. The species belongs to the tribe Acanthocinini, a diverse group of flat-faced longhorn beetles. Very little is known about its biology or distribution beyond basic taxonomic records.
Pseudomethia arida
Pseudomethia arida is a species of longhorn beetle in the family Cerambycidae. It is the sole member of its genus, Pseudomethia. The species was described by Linsley in 1937 and is found in arid regions of the southwestern United States and northwestern Mexico.
Pseudopilema
Pseudopilema is a monotypic genus of longhorn beetles (Cerambycidae) containing a single species, Pseudopilema hoppingi. The genus was established by Linsley in 1940, with the sole species described earlier by Van Dyke in 1920. It belongs to the tribe Hyboderini within the subfamily Cerambycinae.
Pseudostrangalia cruentata
Pseudostrangalia cruentata is a species of longhorn beetle (Cerambycidae) native to eastern North America. It belongs to the subfamily Lepturinae, a group commonly known as flower longhorns due to their frequent association with flowers. The species was first described by Haldeman in 1847 and has been documented in the Canadian provinces of Ontario and Québec.
Psyrassa pertenuis
Psyrassa pertenuis is a species of longhorn beetle in the family Cerambycidae, tribe Elaphidiini. It was described by Casey in 1924. The species has been documented in North America, particularly in the southwestern United States. It is one of many Psyrassa species, a genus of small to medium-sized cerambycids typically associated with woody vegetation.
Purpuricenus humeralis
Red Triangle Long-horned Beetle
Purpuricenus humeralis is a large, showy longhorn beetle in the family Cerambycidae, first described by Fabricius in 1798. It is distinguished from congeners by triangular red or orange markings on the humeri (shoulders) of the elytra, rather than transverse bands covering the basal half. The species occurs in northeastern North America and is attracted to fermenting bait traps. It is one of three similar Purpuricenus species in eastern North America, historically confused with P. axillaris until careful study revealed consistent morphological differences.
Rhodoleptus femoratus
Rhodoleptus femoratus is a species of longhorn beetle in the family Cerambycidae, described by Schaeffer in 1909. It belongs to the tribe Trachyderini, a group of robust, often brightly colored cerambycids. The genus Rhodoleptus is small and primarily distributed in North America. This species is rarely encountered in entomological literature and appears to have limited published biological information.
Rhopalophora meeskei
Rhopalophora meeskei is a longhorn beetle in the family Cerambycidae, described by Casey in 1891. The species has been documented in the southwestern United States and Mexico, with confirmed records from Arizona and observations in Guatemala and Honduras. Field observations indicate adults are active during summer months and are associated with flowering plants, particularly milkweeds (Asclepias spp.) and Ceanothus species.
Rhopalophora prorubra
Rhopalophora prorubra is a species of longhorn beetle in the family Cerambycidae, described by Knull in 1944. It belongs to the tribe Rhopalophorini, a group characterized by club-shaped legs and frequent black-and-red coloration patterns. The species occurs in North America and Mexico. Like other members of its tribe, it is likely diurnal and associated with flowers, though specific behavioral observations for this species remain unrecorded.
Rosalia
Rosalia longicorn, Alpine longhorn beetle
Rosalia is a genus of longhorn beetles (Cerambycidae) established by Audinet-Serville in 1833. The genus includes the iconic Rosalia alpina, known as the Rosalia longicorn or Alpine longhorn beetle, a large and strikingly colored species protected under the European Union Habitats Directive. Members of this genus are associated with beech forests and have experienced significant range contractions across Europe due to habitat loss and forest management practices. The genus is characterized by elongated bodies, long antennae, and often distinctive coloration including blue-gray tones with black spots.
Rosalia funebris
Banded Alder Borer
Rosalia funebris, commonly known as the Banded Alder Borer, is a striking longhorn beetle in the family Cerambycidae. It is notable for its bold black-and-white coloration and elongated body form. Adults are active in spring and summer and are frequently observed on the bark of hardwood trees, particularly alders. The species is native to western North America, ranging from Alaska to California and New Mexico. Unlike many wood-boring beetles, it is not considered a significant pest as it generally lays eggs in downed rather than living trees.
Saperda moesta
Saperda moesta is a species of longhorn beetle in the family Cerambycidae, described by LeConte in 1850. It belongs to the subfamily Lamiinae and tribe Saperdini. The species is recognized as valid by major taxonomic databases including GBIF and NCBI, though Catalogue of Life lists it as a synonym. Distribution records indicate presence in Canada and the contiguous United States.
Saperda moesta moesta
A North American subspecies of longhorn beetle in the family Cerambycidae. Adults are characterized by elongated bodies with exceptionally long antennae typical of the family. The subspecific status indicates geographic variation within the broader species Saperda moesta, which belongs to a genus known for wood-boring larvae that develop in living or stressed trees.
Saperda obliqua
Alder Borer
Saperda obliqua is a longhorn beetle in the family Cerambycidae, described by Thomas Say in 1826. It is commonly known as the Alder Borer due to its association with alder trees (Alnus spp.). The species occurs in Canada and the United States, with its southwestern distributional limit in Missouri.
Saperda tridentata
elm borer
Saperda tridentata, commonly known as the elm borer, is a longhorn beetle (Cerambycidae) native to North America. The species was described by Guillaume-Antoine Olivier in 1795. It is notable for its specialized association with elm species (Ulmus), serving as both a direct pest and a vector of Dutch elm disease. The beetle's life cycle involves larval tunneling in cambium and sapwood, creating characteristic U-shaped galleries. It also acts as a host for the parasitoid wasp Cenocoelius saperdae.
Sarosesthes
Sarosesthes is a monotypic genus of longhorn beetles (family Cerambycidae) containing a single described species, Sarosesthes fulminans. The genus is classified within the tribe Clytini, a group known for wood-boring larvae and often striking adult coloration. The sole species has been documented in eastern North America, where adults have been collected using fermenting bait traps and ultraviolet light traps.
Schizax
Schizax is a genus of longhorn beetles (Cerambycidae) established by LeConte in 1873. It is monotypic, containing only the single species Schizax senex. The genus is placed in the subfamily Cerambycinae and tribe Trachyderini.
Schizax senex
Schizax senex is a species of longhorn beetle (Cerambycidae) and the sole member of the monotypic genus Schizax. The species was described by John Lawrence LeConte in 1873. It belongs to the tribe Trachyderini within the subfamily Cerambycinae. Based on distribution records, it occurs in the United States.
Semanotus amethystinus
Amethyst Cedar Borer
Semanotus amethystinus is a longhorned beetle in the family Cerambycidae, commonly known as the Amethyst Cedar Borer. The species is native to western North America and has been introduced to Hawaii. Adults are typically found on or near their coniferous host trees, particularly junipers and cedars. Larvae develop as wood-borers in the trunks and larger limbs of living or stressed trees, creating galleries packed with frass.
Smodicum cucujiforme
Flat Oak Borer
Smodicum cucujiforme, commonly known as the Flat Oak Borer, is a species of longhorn beetle in the family Cerambycidae. It was first described by Thomas Say in 1826, originally placed in the genus Callidium. The species is known from North and South America, with records from the United States, Canada (Ontario), and Argentina. It is attracted to ultraviolet and mercury-vapor lights, and has been captured in baited jug traps using ethanol and wine mixtures.
Smodicum pacificum
Smodicum pacificum is a species of longhorn beetle (family Cerambycidae) described by Linsley in 1934. It belongs to the tribe Smodicini within the subfamily Cerambycinae. The species has been recorded from North America and Middle America, with specific distribution including Mexico and the United States. Very few observations exist in public databases, suggesting it is rarely encountered or understudied.
Spalacopsis filum costulata
Spalacopsis filum costulata is a subspecies of longhorn beetle (family Cerambycidae) described by Casey in 1913. It belongs to the subfamily Agapanthiinae and tribe Agapanthiini. As a cerambycid, it is characterized by elongated antennae, though specific morphological traits distinguishing this subspecies from the nominate form remain poorly documented in accessible literature.
Spalacopsis stolata
Spalacopsis stolata is a longhorn beetle (Cerambycidae) described by Newman in 1842. It belongs to the subfamily Agapanthiinae and is native to the continental United States. The species is known from limited occurrence records and sparse observational data.
Spalacopsis suffusa
Spalacopsis suffusa is a species of longhorn beetle (Cerambycidae) first described by Newman in 1842. It belongs to the subfamily Agapanthiinae and tribe Agapanthiini. The species is known from North America, with presence confirmed in the United States. Available records indicate it is a rarely observed species, with only four documented observations in iNaturalist.
Spalacopsis texana
Spalacopsis texana is a species of longhorn beetle in the family Cerambycidae, described by Thomas L. Casey in 1891. It belongs to the subfamily Agapanthiinae and tribe Agapanthiini. The species is known from the southern United States and Mexico. Like other members of its genus, it is likely associated with woody vegetation, though specific ecological details remain poorly documented.
Sphaenothecus cylindricollis
Sphaenothecus cylindricollis is a species of longhorn beetle in the family Cerambycidae, subfamily Cerambycinae, tribe Trachyderini. Described by Casey in 1924, this species belongs to a genus of trachyderine cerambycids distributed in North America. The genus Sphaenothecus contains species that are typically associated with flowering plants, where adults are often found feeding on pollen and nectar.
Stenaspis solitaria
Stenaspis solitaria is a longhorn beetle species in the family Cerambycidae, described by Thomas Say in 1824. It occurs in the southwestern United States and Mexico, where it has been collected from various woody hosts including Acacia species and Baccharis sarothroides. Field observations indicate adults are active during summer months, particularly July and August, and are often found by beating vegetation or sweeping flowering plants.
Stenaspis verticalis arizonicus
Stenaspis verticalis arizonicus is a subspecies of longhorn beetle in the family Cerambycidae, subfamily Cerambycinae, tribe Trachyderini. It was described by Casey in 1912 and is known from the southwestern United States and Mexico. The subspecies is associated with desert scrub and woodland habitats, particularly in Arizona and adjacent regions. Adults have been observed on Baccharis sarothroides (desert broom), where mating pairs have been documented.