Longhorn-beetle
Guides
Stenhomalus taiwanus
Stenhomalus taiwanus is a species of longhorn beetle in the family Cerambycidae, described by Matsushita in 1933. The species is native to East Asia and has been recorded from Taiwan, Japan, South Korea, and mainland China. It belongs to the tribe Stenhomalini, a group of small to medium-sized cerambycine beetles. The specific epithet refers to Taiwan, where the species was first described.
Stenocorus nubifer
Stenocorus nubifer is a species of longhorn beetle (family Cerambycidae) distributed across western North America. The species exhibits variable coloration, with individuals being either black or brown. As a member of the subfamily Lepturinae, it belongs to a group commonly known as flower longhorns, though specific floral associations for this species remain undocumented.
Stenocorus schaumii
Schaum's Longhorn Beetle
Stenocorus schaumii is a medium-sized longhorn beetle in the family Cerambycidae, measuring 17–29 mm in length. Adults exhibit variable coloration, appearing either black or brownish-red. The species shares diagnostic morphological features with other members of its genus, including wide shoulders and tuberculated lateral pronotal margins. Larval development occurs in hardwood trees, with documented feeding on Fraxinus (ash), maple, and other hardwood genera.
Stenocorus vittiger
Stenocorus vittiger is a species of longhorn beetle in the family Cerambycidae, subfamily Lepturinae. It is characterized by a brown pronotum bearing four black longitudinal stripes, a pattern shared with the related species Analeptura lineola. The species occurs in eastern North America, with records from Canada and the United States.
Stenosphenus dolosus
Stenosphenus dolosus is a species of longhorn beetle in the family Cerambycidae, described by George Henry Horn in 1885. It belongs to the tribe Elaphidiini, a diverse group of cerambycids often associated with woody vegetation. Field observations indicate adults are attracted to ethanol-baited traps and have been found resting on thorny branches of lotebush (Zizyphus obtusifolium) during evening hours. The species occurs in the southwestern United States and Mexico.
Sternidius alpha
Alpha Long-horned Beetle
A longhorn beetle species in the family Cerambycidae, first described by Say in 1827. Exhibits multiple color variants across its broad North American range, which led to the description of several subspecies later synonymized under the current name. Molecular analysis of the cytochrome oxidase I gene has revealed three distinct clades among color morphs, suggesting potential cryptic diversity. The species remains taxonomically unsettled pending further study of additional color morphs from different localities.
Sternidius centralis
Sternidius centralis is a species of longhorn beetle in the family Cerambycidae, subfamily Lamiinae, described by LeConte in 1884. It belongs to the tribe Acanthocinini, a group of small to medium-sized flat-faced longhorns. The species is part of the genus Sternidius, which contains multiple North American species that are often difficult to distinguish without close examination.
Sternidius decorus
Sternidius decorus is a species of longhorn beetle in the family Cerambycidae, subfamily Lamiinae. It was originally described as Liopus decorus by Fall in 1907. The species has been documented from Arizona and New Mexico, where it has been collected by beating oak vegetation. It appears to be associated with oak woodland habitats in the southwestern United States.
Sternidius punctatus
flat-faced longhorn
Sternidius punctatus is a species of flat-faced longhorn beetle in the family Cerambycidae. It is a small longhorned beetle that has been collected from woody vegetation, particularly New Mexico locust (Robinia neomexicana), in the foothills of the Rocky Mountains. The species was originally described by Haldeman in 1847 under the basionym Amniscus punctatus. Like other members of the genus Sternidius, it is associated with deciduous trees and shrubs.
Sternidocinus
Sternidocinus is a monotypic genus of longhorn beetles (Cerambycidae) in the subfamily Lamiinae. The genus contains a single species, Sternidocinus barbarus, described by Van Dyke in 1920. The genus itself was established by Dillon in 1956. The sole species is endemic to California.
Sternidocinus barbarus
Sternidocinus barbarus is a longhorn beetle (Cerambycidae) and the sole species in its genus. It was described by Van Dyke in 1920 based on specimens from western North America. The species belongs to the subfamily Lamiinae, tribe Acanthocinini, a group characterized by often cryptic coloration and nocturnal habits. Its monotypic genus status makes it taxonomically distinctive within the diverse cerambycid fauna of North America.
Stictoleptura
Stictoleptura is a genus of longhorn beetles (Cerambycidae) distributed across the Holarctic region, with species in Europe, Asia, and North America. The genus includes medium-sized beetles typically associated with broadleaved woodland habitats. The first genome sequence for the genus was published for Stictoleptura scutellata, a scarce species in Britain associated with ancient woodland and wood pasture.
Stizocera floridana
Stizocera floridana is a small longhorn beetle (Cerambycidae) described by Linsley in 1949. It is known from a single specimen collected in Lee County, Florida, and reaches approximately 13 mm in length. The species belongs to the tribe Elaphidiini within the subfamily Cerambycinae. Very little is known about its biology or ecology due to its rarity and limited documentation.
Strangalepta
Strangalepta is a monotypic genus of longhorn beetles in the family Cerambycidae, established by Casey in 1913. The genus contains only one species, Strangalepta abbreviata, which belongs to the subfamily Lepturinae (flower longhorns). Members of this genus are found in North America.
Stromatium longicorne
Stromatium longicorne is a longhorn beetle in the family Cerambycidae, described by Newman in 1842. It belongs to the tribe Hesperophanini and has been recorded across multiple continents including North America, Oceania, and Southern Asia. The species is relatively well-documented with over 400 observations on iNaturalist. As a member of the genus Stromatium, it is associated with wood-boring habits typical of this group.
Stromatium unicolor
Stromatium unicolor is a species of longhorn beetle in the family Cerambycidae, currently treated as a synonym of Stromatium auratum. The species was described by Olivier in 1800. Records indicate occurrence in Brazil (Rio de Janeiro, São Paulo, Amazonas) and Albania, though the taxonomic status and distribution require verification given its synonymy with S. auratum.
Styloxus fulleri
Styloxus fulleri is a small longhorn beetle (Cerambycidae) described by George Henry Horn in 1880. It measures approximately 12–13 mm in length and is characterized by exceptionally long, thin antennae segments and disproportionately large eyes on a small head. The elytra are notably abbreviated, covering only about two-thirds of the body length and leaving the hind wings partially exposed. The species belongs to the tribe Methiini within the subfamily Cerambycinae.
Styloxus fulleri californicus
Styloxus fulleri californicus is a subspecies of longhorn beetle (Cerambycidae) described by Fall in 1901. It belongs to the tribe Methiini within the subfamily Cerambycinae. The taxon is currently accepted with valid status. Very few documented observations exist—only three records in iNaturalist—indicating it is rarely encountered or potentially underreported. Its distribution includes parts of North America, specifically the United States and Mexico.
Styloxus fulleri fulleri
Styloxus fulleri fulleri is a subspecies of longhorn beetle (Cerambycidae) in the tribe Methiini. The taxon was originally described by Horn in 1880. GBIF records indicate presence in Mexico and the United States. iNaturalist shows 17 observations of this subspecies. The taxon is currently treated as a synonym in some databases.
Susuacanga falli
Susuacanga falli is a species of longhorn beetle (family Cerambycidae) described by Linsley in 1940. The species belongs to the tribe Eburiini within the subfamily Cerambycinae. It has been recorded in Mexico and the United States, though specific ecological details remain poorly documented. The genus Susuacanga comprises several species of medium-sized cerambycid beetles primarily distributed in the Americas.
Susuacanga stigmatica
Speckle-necked Longhorn Beetle
Susuacanga stigmatica is a longhorn beetle species in the family Cerambycidae, first described by Chevrolat in 1835. The species belongs to the tribe Eburiini and is known from records in Guatemala, Mexico, and the United States. It is commonly referred to as the Speckle-necked Longhorn Beetle. The genus Susuacanga includes multiple species distributed in the Americas.
Synaphaeta guexi
Spotted Tree Borer
Synaphaeta guexi is a longhorn beetle and the sole species in its genus. It inhabits the Pacific coastal region of North America, from British Columbia to California. The species develops in hardwood trees and is known by the common name Spotted Tree Borer. It was described by John Lawrence LeConte in 1852.
Tessaropa tenuipes
Tessaropa tenuipes is a species of longhorn beetle (family Cerambycidae) described by Haldeman in 1846. It is currently classified in the subfamily Cerambycinae, tribe Methiini. The species is known from North America. Limited biological information is available for this taxon.
Tetraopes annulatus
Ringed Long-horned Beetle
Tetraopes annulatus is a species of longhorn beetle in the subfamily Lamiinae, described by John Lawrence LeConte in 1847. It is distributed across the northern United States and southern Canada, with records from Alberta, Manitoba, and Saskatchewan. Like other members of the genus Tetraopes, this species is a milkweed specialist, with larvae feeding on roots and adults feeding on foliage.
Tetraopes basalis
western milkweed longhorn beetle
Tetraopes basalis is a longhorn beetle in the family Cerambycidae, commonly known as the western milkweed longhorn beetle. It was described by John Lawrence LeConte in 1852 and occurs in the United States. The species is closely associated with milkweed plants (Asclepias), on which adults feed and larvae develop. Adults are most active from April to August.
Tetraopes linsleyi
A milkweed longhorn beetle described by Chemsak in 1963. Like other members of the genus Tetraopes, it is a specialist herbivore associated with milkweeds (Asclepias), possessing bright aposematic coloration and the characteristic divided eyes that give the genus its name. The species is known from the United States, though specific details about its range and biology remain limited.
Tetraopes mandibularis
Tetraopes mandibularis is a species of longhorn beetle in the family Cerambycidae, described by Chemsak in 1963. The species belongs to the genus Tetraopes, a group of milkweed-associated beetles. It is known from the United States, though specific details about its biology and ecology remain poorly documented in available literature.
Tetropium cinnamopterum
Eastern Larch Borer
Tetropium cinnamopterum is a native North American cerambycid beetle in the tribe Tetropiini. Adults are distinguished from the closely related T. parvulum by eye shape, scutellar structure, external genitalia, and pronotal puncture number; larvae are distinguished by urogomphi morphology. The species has been recorded from various conifer hosts, with larvae developing in conifer wood. It is transcontinental in Canada and occurs sympatrically with invasive T. fuscum in Atlantic Canada, where cross-attraction to the aggregation pheromone fuscumol may occur. Both sexes respond to (S)-fuscumol synergized by host monoterpenes and ethanol.
Tetropium fuscum
Brown Spruce Longhorn Beetle
Tetropium fuscum is a wood-boring cerambycid beetle native to Europe and Northern Asia, established as an invasive species in Atlantic Canada since at least 1990. The species is a documented pest of spruce trees (Picea spp.), with larvae developing in the phloem of host trees. Adult males produce an aggregation pheromone called fuscumol that attracts both sexes, particularly when combined with host tree volatiles. In its introduced Canadian range, it has been observed infesting stressed and moribund red spruce, with larval galleries sometimes girdling stems and causing tree mortality.
Thryallis undatus
Thryallis undatus is a longhorn beetle (Cerambycidae: Lamiinae: Anisocerini) first described by Chevrolat in 1834. The species has been documented as a pest of Persian lime (Citrus latifolia) in commercial orchards in Veracruz, Mexico, where adults oviposit on trunks and branches and larvae create galleries 2–5 cm deep. This represents the first record of the species associated with the Rutaceae family. Native distribution includes Middle America and North America, with records from Guatemala and Honduras.
Toxoleptura vexatrix
Toxoleptura vexatrix is a species of longhorn beetle (family Cerambycidae) in the subfamily Lepturinae. First described by Mannerheim in 1853, this species has been treated under the synonym Brachyleptura vexatrix in some taxonomic treatments. It occurs in North America. As a member of the flower-visiting lepturine beetles, adults likely feed on pollen and nectar, though specific ecological details remain poorly documented in published sources.
Tragidion armatum
Tragidion armatum is a longhorn beetle (Cerambycidae) found in the southwestern United States and Mexico. Adults exhibit bright orange and black coloration that mimics tarantula hawk wasps (Pompilidae: Pepsis, Hemipepsis). The species breeds in dead flower stalks of Yucca and Agave plants. It was described by LeConte in 1858, with T. armatum brevipenne later synonymized under it.
Tragidion gracilipes
Tragidion gracilipes is a species of longhorn beetle in the family Cerambycidae, described by Linsley in 1940. The genus Tragidion comprises eleven recognized species distributed across North America and Mexico, characterized by bright orange and black coloration that mimics spider wasps (Pompilidae) in the genera Pepsis and Hemipepsis. Species of Tragidion have historically been difficult to identify due to morphological similarity, geographic variation, sexual dimorphism, and potential hybridization. A comprehensive taxonomic review by Swift and Ray (2008) clarified species boundaries within the genus, though T. gracilipes itself remains poorly documented in the literature.
Trichastylopsis albidus
Trichastylopsis albidus is a species of longhorn beetle in the family Cerambycidae, subfamily Lamiinae. It is the sole member of the monotypic genus Trichastylopsis. The species was described by John Lawrence LeConte in 1852. It is known from North America, with records from Mexico and the United States.
Trichocanonura linearis
Trichocanonura linearis is a species of longhorn beetle in the subfamily Lamiinae, and the sole member of its monotypic genus. It was described by Skinner in 1905 based on specimens from Mexico. The species is characterized by its elongated, linear body form typical of many lamiine cerambycids. It is distributed in Mexico and the southern United States.
Trichocnemis spiculatus
Spined Woodborer, Pine Sawyer, Western Pine Sawyer, Ponderosa Pine Borer
Trichocnemis spiculatus is a large wood-boring beetle in the family Cerambycidae, native to western North America. It is notable as the largest wood-boring beetle species in Colorado and has served as inspiration for technological innovation—its opposable mandibles inspired the design of modern chainsaw chains with alternating right and left cutting teeth. The species develops in dead and dying conifers, primarily ponderosa pine and Douglas fir, with a multi-year life cycle. Larvae create extensive tunnel systems through sapwood and heartwood.
Trichocnemis spiculatus neomexicanus
New Mexican ponderous borer
Trichocnemis spiculatus neomexicanus is a subspecies of the ponderous borer, a large prionine longhorn beetle native to western North America. The larvae are among the largest of any North American cerambycid, developing in dead or dying coniferous wood—particularly ponderosa pine. Adults are nocturnal and attracted to lights. This subspecies was described by Casey in 1890 and occurs in the southwestern United States and Mexico. The species has gained notoriety as the inspiration for modern chainsaw design, after Joe Cox observed the larva's opposable mandibles in action.
Triodoclytus lanifer
Triodoclytus lanifer is a species of longhorn beetle (Cerambycidae) in the tribe Clytini. It was originally described as Clytus lanifer by John Lawrence LeConte in 1873 and later transferred to Triodoclytus. The genus Triodoclytus contains small to medium-sized cerambycine beetles with distinctive antennal and elytral characteristics. Records indicate presence in the United States, though detailed biological information remains limited.
Tylcus
Tylcus is a monotypic genus of longhorn beetles (family Cerambycidae) containing a single species, Tylcus hartwegii. The genus was established by Casey in 1912 and is classified within the tribe Clytini of the subfamily Cerambycinae. As the sole representative of its genus, Tylcus hartwegii serves as the type species and defines the morphological characteristics of this otherwise poorly documented group.
Tylonotus bimaculatus
Ash and Privet Borer
Tylonotus bimaculatus is a longhorn beetle (Cerambycidae) described by Haldeman in 1847. Commonly known as the Ash and Privet Borer, this species is documented across North America with over 1,000 iNaturalist observations. As a member of the subfamily Cerambycinae and tribe Hesperophanini, it belongs to a group of wood-boring beetles whose larvae typically develop in hardwood trees.
Tylosis
Tylosis is a genus of longhorn beetles (Cerambycidae) in the tribe Trachyderini. Species are characterized by bold red and black coloration, robust bodies, and relatively long antennae. The genus contains species such as Tylosis maculatus and Tylosis jiminezi, which are found in arid and semi-arid regions of western North America. Adults are active during late summer and fall, often associated with flowering host plants.
Tylosis jimenezii
Tylosis jimenezii is a species of longhorn beetle in the family Cerambycidae, first described by Dugès in 1879. It belongs to the tribe Trachyderini, a group of often large and strikingly colored cerambycids. The species is currently considered a synonym of Tylosis jimenezi, with records from both the United States and Mexico. Limited field observations suggest it may be associated with Malvaceae host plants in arid regions of the southwestern United States.
Tylosis maculatus
Spotted Tylosis
Tylosis maculatus is a species of longhorn beetle in the family Cerambycidae, described by John Lawrence LeConte in 1850. It belongs to the tribe Trachyderini, a group known for often striking coloration patterns. The species is recognized by its spotted pattern, as indicated by its specific epithet 'maculatus'. It occurs in North and Middle America, with records from the United States and Mexico.
Tylosis oculatus
Tylosis oculatus is a species of longhorn beetle (Cerambycidae) described by John Lawrence LeConte in 1850. The specific epithet "oculatus" refers to eye-like markings, suggesting the species bears distinctive ocular patterns on its body. As a member of the subfamily Cerambycinae and tribe Trachyderini, it belongs to a group of robust, often strikingly marked longhorn beetles. The genus Tylosis is native to the Americas, with species distributed across North and Central America.
Urgleptes celtis
Urgleptes celtis is a species of longhorn beetle (family Cerambycidae) described by Schaeffer in 1905. The specific epithet 'celtis' suggests an association with hackberry trees (genus Celtis), though direct host records for this species are limited. It belongs to the tribe Acanthocinini within the subfamily Lamiinae. The genus Urgleptes comprises small to medium-sized longhorn beetles, many of which are associated with dead or dying wood of various hardwood trees.
Urgleptes facetus
Urgleptes facetus is a species of longhorn beetle in the family Cerambycidae, described by Thomas Say in 1827. The species belongs to the subfamily Lamiinae and tribe Acanthocinini. It is distributed across parts of eastern North America, with records from Canada (Ontario, Québec) and the United States. Like other members of the genus Urgleptes, this is a small to medium-sized cerambycid beetle.
Urgleptes foveatocollis
Urgleptes foveatocollis is a small longhorn beetle species in the family Cerambycidae, described by Hamilton in 1896. It belongs to the subfamily Lamiinae and tribe Acanthocinini. The species is documented from North America, with records from the United States. Like other members of its genus, it is likely associated with dead or dying wood, though specific ecological details remain poorly documented.
Urgleptes sandersoni
Urgleptes sandersoni is a species of longhorn beetle (family Cerambycidae) described by Gilmour in 1963. It belongs to the subfamily Lamiinae, tribe Acanthocinini. The species is known from the Caribbean region, with records from the Dominican Republic and Haiti. As a member of the genus Urgleptes, it is part of a group of small to medium-sized cerambycids.
Urgleptes signatus
Urgleptes signatus is a species of longhorn beetle in the family Cerambycidae, described by John Lawrence LeConte in 1852. It belongs to the subfamily Lamiinae and tribe Acanthocinini. The species is known from eastern North America, with records from Canada (New Brunswick, Ontario, Québec) and the United States. Like other members of the genus Urgleptes, it is a small to medium-sized cerambycid beetle. Specific details about its biology and ecology remain poorly documented in the available literature.
Valenus inornatus
Valenus inornatus is a species of longhorn beetle in the subfamily Lamiinae, and the sole member of its genus. It was described by Thomas L. Casey in 1891. The species is distributed in Mexico and the United States. As the only species in Valenus, it represents a monotypic genus within the tribe Acanthocinini.