Utah State University Extension
Asparagus beetle, Crioceris asparagi, and spotted asparagus beetle, C. duodecimpunctata are leaf beetles in the family Chrysomelidae. These beetles feed exclusively on asparagus and are native to Europe. Asparagus beetle is the more economically injurious of the two species.
Hodgson, Erin W. and Drost, Dan, "Asparagus Beetle and Spotted Asparagus Beetle" (2007). All Current Publications. Paper 847.