Puncticeps-species-group
Guides
Thyreocephalus arizonicus
Thyreocephalus arizonicus is a rove beetle (Staphylinidae: Xantholinini) described by Smetana in 1982 from Arizona, USA. It belongs to the 'puncticeps' species group, a cluster of five closely related Mexican species characterized by shared morphological features. The species was first recorded from Mexico in 2016, with specimens documented from Estado de México, Jalisco, and Morelos. As with other members of its genus, it is a small to medium-sized staphylinid beetle with the characteristic short elytra exposing most of the abdomen.