Infuscatus-group
Guides
Philodromus infuscatus utus
Philodromus infuscatus utus is a subspecies of running crab spider in the family Philodromidae, described by Chamberlin in 1921. It belongs to the infuscatus species group, which comprises 20 species and 2 subspecies distributed across North and Central America and the West Indies. This subspecies is distinguished from the nominate P. i. infuscatus by its occurrence in the western United States, whereas the nominate form occurs in the eastern United States. The infuscatus group as a whole is endemic to the Americas with primary habitats in arid regions of the United States and Mexico.