Trachyderini
Guides
Plionoma suturalis
Plionoma suturalis is a longhorned beetle in the tribe Trachyderini, characterized by bright coloration and diurnal flower-visiting behavior. The species was described by LeConte in 1858 and occurs from Texas west to California and south into northern Mexico. Its 2013 discovery in northwestern Oklahoma represented a significant northeastern range extension of over 200 miles from the nearest previous records in north-central Texas. Adults exhibit bimodal seasonal activity, appearing in spring, disappearing during summer, and reappearing in fall.
Purpuricenus dimidiatus
Scrub Oak Borer
Purpuricenus dimidiatus is a species of longhorned beetle in the family Cerambycidae, described by John Lawrence LeConte in 1884. The species is commonly known as the Scrub Oak Borer. Like other members of the genus Purpuricenus, it is a large, showy beetle that has been documented in North America. The genus is notable for containing species that are attracted to fermenting bait traps, though specific trapping records for P. dimidiatus are not detailed in the available sources.
Purpuricenus linsleyi
Purpuricenus linsleyi is a rare longhorned beetle species in the family Cerambycidae, described by John Chemsak in 1961. The species was originally known only from the holotype and one paratype from Texas, and was later rediscovered in the Texas hill country by Dan Heffern. It belongs to a genus of large, showy beetles with velvety black bodies and vivid red or orange elytral markings. The species can be confused with P. humeralis due to similar elytral patterning, but differs in having the posterior margin of the basal elytral markings more or less transverse rather than distinctly oblique.
Purpuricenus opacus
Purpuricenus opacus is a species of longhorned beetle in the family Cerambycidae, described by Knull in 1937. It is considered a west Texas specialty that has been recently documented from oak in the Lincoln National Forest of Eddy County, New Mexico, expanding its known range beyond Texas. The species is associated with oak woodlands in pinyon/oak/juniper habitats.
Purpuricenus paraxillaris
White Oak Branch Girdler
Purpuricenus paraxillaris is a large, showy longhorned beetle (family Cerambycidae) described by Ted C. MacRae in 2000 from specimens collected in Missouri. It was the first new species discovered by the author using fermenting bait traps. The species closely resembles P. axillaris but is larger and more robust, with reddish rather than pale orange elytral markings, more developed pronotal tubercles with polished apical lines, and distinctly dentate elytral apices. It is attracted to fermenting baits and has been documented across the eastern United States.
Rhodoleptus
Rhodoleptus is a genus of longhorn beetles in the family Cerambycidae, subfamily Cerambycinae, and tribe Trachyderini. The genus was established by Linsley in 1962 and currently contains four described species distributed in North America. Members of this genus are part of the diverse Trachyderina subtribe, which includes many colorful and patterned cerambycine beetles.
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.
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.
Sphaenothecus
Sphaenothecus is a genus of longhorn beetles (family Cerambycidae) in the tribe Trachyderini. The genus was established by Dupont in 1838 and contains seven recognized species distributed in North and Central America. Members of this genus are associated with flowering plants in arid and semi-arid regions. The genus is part of the diverse cerambycid fauna of the southwestern United States and Mexico.
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.
Sphaenothecus trilineatus
Sphaenothecus trilineatus is a longhorn beetle in the family Cerambycidae, described by Dupont in 1838. It belongs to the tribe Trachyderini, a group of often colorful and robust cerambycids. The species occurs in Central America, with records from Costa Rica, Guatemala, and Honduras. Little is known of its specific biology beyond general family characteristics.
Stenaspis
Stenaspis is a genus of longhorn beetles (family Cerambycidae) established by Audinet-Serville in 1834. The genus comprises seven recognized species distributed across North and Central America. Members are robust, medium-to-large cerambycids associated with woody vegetation, particularly leguminous trees and shrubs. Several species have been documented from Arizona and the southwestern United States, where they occur in desert scrub and oak woodland habitats.
Stenaspis verticalis
Stenaspis verticalis is a species of longhorn beetle in the family Cerambycidae, described by Audinet-Serville in 1834. It belongs to the tribe Trachyderini, a group known for robust, often strikingly patterned beetles. Field observations indicate this species is closely associated with Baccharis sarothroides (desert broom), on which adults have been found resting and mating. The species occurs in the southwestern United States and Mexico, with documented records from Arizona and potentially extending into Central America.
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.
Stenaspis verticalis insignis
Red-headed Beauty
Stenaspis verticalis insignis is a subspecies of longhorn beetle in the family Cerambycidae, tribe Trachyderini. It occurs in the southwestern United States and Mexico. The species was collected during a 2018 Arizona collecting trip in the Santa Rita Mountains, where specimens were found on Baccharis sarothroides (desert broom). The subspecies is characterized by its distinctive coloration, which includes a red head in adults.
Trachyderina
Trachyderina is a subtribe of longhorn beetles (Cerambycidae) within the tribe Trachyderini and subfamily Cerambycinae. The subtribe includes numerous genera and species distributed primarily in the Americas, with many members exhibiting robust body forms and often striking coloration patterns. These beetles are characterized by their relatively large size among cerambycines and diverse ecological associations with woody plants.
Tragidion agave
Tragidion agave is a species of longhorned beetle in the family Cerambycidae, described by Swift and Ray in 2008 from California and Baja California. It is one of two species in the genus known to breed in dead flower stalks of Agave (Agavaceae), the other being T. armatum. The species exhibits bright orange and black coloration characteristic of the genus, which functions as mimicry of spider wasps (family Pompilidae).
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.
Tylosis puncticollis
Tylosis puncticollis is a species of longhorned beetle (family Cerambycidae) described by Henry Walter Bates in 1885. It belongs to the tribe Trachyderini, a group of robust, often colorful cerambycids commonly known as trachyderines. The genus Tylosis is restricted to the Americas, with species distributed from the southwestern United States through Mexico. Like other members of its genus, T. puncticollis likely exhibits the characteristic elongated body form and long antennae typical of cerambycids, though specific morphological details distinguishing it from congeners require close examination.