Larval hostplants of 169 species of butterflies (89% of the resident fauna) and many additional subspecies are reported for the state of Nevada. These encompass more than 3800 individual records including nearly 400 species of plants in 33 families. Although these are largely of plant taxa recorded elsewhere, more than 300 (40% of butterfly/plant combinations) are newly reported at the species-level taxonomy of both plant and butterfly, including 39 new generic records and seven new familial records for the butterfly in question. A large proportion of the newly reported associations are due to this investigation being conducted in a region with virtually no previous information.
