Arid-grasslands
Guides
Idia occidentalis
Western Idia
Idia occidentalis is a small litter moth in the family Erebidae, first described by Smith in 1884. It was formerly treated as a subspecies of Idia lubricalis but is now recognized as a distinct species. The species is found in western North America, with adults active primarily in late summer in northern parts of its range. It inhabits dry, open environments including arid grasslands and badlands.