Review of the species described in Leptostilbus Casey in North America (Coleoptera: Phalacridae: Xanthocomus Guillebeau)
- The species of Phalacridae (Coleoptera) historically included in Leptostilbus Casey, 1916, are reviewed.
Leptostilbus rutilans Casey, 1916, is here designated as the type species of Leptostilbus. The genus Leptostilbus is
synonymized with Xanthocomus Guillebeau, 1893, syn. nov., resulting in two new combinations, Xanthocomus
concinnus (Casey, 1916) and X. rutilans (Casey, 1916). Lectotypes are here designated for these two species.
Acylomus elongatulus (Casey, 1890), comb. nov., formerly placed in Leptostilbus, is excluded from Xanthocomus.
A key and illustrations are provided to aid in recognition of the two species of Xanthocomus in North America, and
detailed distribution maps are given for both species.