Polytypic-species-complex
Guides
Crossidius hirtipes nigripennis
Crossidius hirtipes nigripennis is a subspecies of the highly variable longhorned beetle Crossidius hirtipes, described by Chemsak & Linsley in 1959. As one of 16 recognized subspecies within C. hirtipes, it represents part of a complex taxonomic group characterized by extensive variation in coloration, elytral pattern, and pubescence across the Great Basin region. The subspecies epithet "nigripennis" suggests distinctive dark or black wing covers (elytra), though specific diagnostic features for this taxon are not detailed in the provided sources. Like other C. hirtipes subspecies, adults are associated with rabbitbrush host plants (Chrysothamnus/Ericameria species). The taxonomic status of C. hirtipes subspecies remains under investigation, with ongoing molecular studies seeking to clarify whether these represent distinct species, subspecies, or elements of a single highly variable population.