Milkweed-borer
Guides
Tetraopes femoratus
Red-femured Milkweed Borer
Tetraopes femoratus is a longhorned beetle (family Cerambycidae) in the subfamily Lamiinae, described by John Lawrence LeConte in 1847. It is one of several North American milkweed borer beetles in the genus Tetraopes, all of which are specialized feeders on milkweeds (Asclepias spp.). The species occurs across western and central North America from Canada to Mexico, with records from the western United States and Great Plains region. Adults are typically encountered in late summer and fall, with September collecting records from Oklahoma and late August observations from sagebrush habitats in Nevada.