April-august
Guides
Tetraopes basalis
western milkweed longhorn beetle
Tetraopes basalis is a longhorn beetle in the family Cerambycidae, commonly known as the western milkweed longhorn beetle. It was described by John Lawrence LeConte in 1852 and occurs in the United States. The species is closely associated with milkweed plants (Asclepias), on which adults feed and larvae develop. Adults are most active from April to August.