Astragalus
Guides
Pima occidentalis
snout moth
Pima occidentalis is a species of snout moth (family Pyralidae) native to the southwestern United States. The species was formerly treated as a subspecies of Pima albiplagiatella but is now recognized as distinct. Larvae are specialized feeders on Astragalus and Lathyrus species. Populations in Texas, New Mexico, and Arizona produce two generations annually.
Tychius semisquamosus
Tychius semisquamosus is a species of leguminous seed weevil in the family Curculionidae, described by Faust in 1893. It belongs to the semisquamosus group of North American Tychius species, which are associated with host plants in the genus Astragalus and Lotus. The species has been subject to taxonomic revision, with several previously described species (T. lamellosus, T. squamosus, T. intermixtus) now synonymized under this name. It represents part of a North American fauna derived from multiple independent dispersals from Eurasia.