Asclepiadaceae
Guides
Chrysochus
dogbane leaf beetles, milkweed beetles
Chrysochus is a genus of leaf beetles in the subfamily Eumolpinae, established in 1836 by Louis Alexandre Auguste Chevrolat. The genus name derives from Greek χρυσοχόος, meaning 'goldsmith,' referencing the striking metallic coloration of its members. The genus contains at least eight described species distributed across North America, Europe, and Asia, with six species in the Palearctic realm and two in North America. Species in this genus are specialized herbivores of plants in the dogbane and milkweed families (Apocynaceae and Asclepiadaceae).
Tetraopes skillmani
Skillman's Milkweed Longhorn
Tetraopes skillmani is a longhorn beetle (Cerambycidae: Lamiinae) described in 2004 from Arizona. It belongs to the milkweed beetle genus Tetraopes, whose members are obligate specialists on Asclepiadaceae host plants. The type locality is near Duquesne in southeastern Arizona, where collectors found its host plant Sarcostemma sp. but did not encounter the beetles during the initial survey.