Tarantula-hawk-wasp-mimic
Guides
Megacheuma brevipenne
Megacheuma brevipenne is a longhorn beetle in the family Cerambycidae, subfamily Cerambycinae. The species was formerly treated as a subspecies of Tragidion armatum (as Tragidion armatum brevipenne) but has been elevated to full species rank as Megacheuma brevipenne. It is characterized by antennae significantly shorter than the abdomen, distinguishing it from related species. The beetle exhibits Batesian mimicry of tarantula hawk wasps (Pepsis and Hemipepsis).
Tragidion
Tragidion is a genus of longhorn beetles (Cerambycidae) distributed across North America and Mexico. Species are notable for their bright orange-red and black coloration, which functions in Batesian mimicry of tarantula hawk wasps (Pompilidae: Pepsis, Hemipepsis). The genus contains eleven recognized species, with seven occurring in North America and four restricted to Mexico. Taxonomic clarity was recently provided by Swift & Ray (2008), who described two new species, revalidated one from synonymy, and proposed four new synonymies to resolve long-standing identification challenges.
Tragidion deceptum
Tragidion deceptum is a longhorned beetle (Cerambycidae) described by Swift & Ray in 2008 during a comprehensive taxonomic revision of the genus. It occurs in montane habitats of the southwestern United States and northern Mexico, where it breeds in recently dead oak branches. The species exhibits Batesian mimicry of tarantula hawk wasps (Pompilidae: Pepsis, Hemipepsis), with bright orange-red and black coloration. It is one of several Tragidion species historically confused under the name T. 'annulatum' prior to the 2008 revision.