Bark and Ambrosia Beetles of the World

Wood (1982) suggests that this might be a geographic race or subspecies of nitidus Swaine.

Known only from a single specimen collected at a light trap.

Bright (1981) included subopacus Blackman as a subspecies of P. segnis Blackman. Wood (1982, 1992) rejected this treatment. In Bright’s concept, segnis segnis is found in the southwestern U.S. and northern Mexico (Durango), with segnis subopacus restricted to central and southern Mexico. Wood (1982) cites specimens from the same locality in Durango from both nominal species. These species need to be re-examined.

This species is closely related to virilis Blackman and may not be distinct.