Location: Safford, Arizona
August 20, 2011 6:59 pm
Can You identify this bug? Found in the Arizona desert on top of Mt Graham near Safford.
This is a Leaf Beetle Larva in the family Chrysomelidae, and larvae can often be quite difficult to properly identify. Knowing the food plant is often a tremendous assistance. There is a strong resemblance to the larva of the Colorado Potato Beetle (see BugGuide), however, this is not a Colorado Potato Beetle larva. We suspect it is another member of the genus, or perhaps a closely related genus. Though BugGuide does not picture the larva, circumstantial evidence leads us to speculate that this might be the larva of the Reddish Potato Beetle, Leptinotarsa rubiginosa, a species only reported from Arizona on BugGuide.