Beetles are shown alphabetically within taxonomic level. If you see an error, please let me know via the contact tab at the top of the page.
Cantharidae: Colorado Soldier Beetle (Chauliognathus basalis)
All three photos are of the same beetle, which I found on a tamarisk.
Cerambycidae: Longhorn Beetle (Tylosis maculatus)
The larvae of this beetle feed on the dead roots of globe mallow plants, and the adults hang out topside. There is no common name for the species; the family as a whole is known as longhorn beetles.
Chrysomelidae: Dogbane Beetle (Chrysochus auratus)
This beetle got its name because it eats dogbane (Apocynum) leaves.
Chrysomelidae: Spotted Cucumber Beetle (Diabrotica undecimpunctata)
Chrysomelidae: Three-Lined Potato Beetle (Lema daturaphila)
Both photos are of the same individual. Three-Lined Potato Beetles resemble, so are confused with, Striped Cucumber Beetles. Both have three black stripes with yellow between them, but the Three-Lined Potato Beetle has a narrower thorax that is brown or reddish with spots. Also, the head isn't black. This one was on Silverleaf Nightshade.
Chrysomelidae: California Willow Beetle? (Plagiodera californica?)
On an a cool September morning I found these beetles swarming on willow plants next to the Rio Grande. The Imported Willow Leaf Beetle (Plagiodera versicolora) is supposedly confined to the eastern half of the country, so I suspect this bunch of being the California Willow Beetle. However, I was unable to find satisfactory information on the range of either species.
Coccinellidae: LeConte's Giant Lady Beetle (Anatis lecontei)
Coccinellidae: Seven-Spotted Laydbug (Coccinella septempunctata)
Coccinellidae: Convergent Lady Beetle (Hippodamia convergens)
Meloidae: Desert Spider Beetle (Cysteodemus wislizeni)
Meloidae: Blister Beetle (Megetra)
To see my YouTube video of this little critter, click here.
Scarabaeidae: Figeater Beetle (Cotinis mutabilis)
These large June bugs resembles the Green June Bug, Cotinis nitida. That species supposedly ranges no farther west than Texas, but I have seen online assignments of New Mexico June bugs to that species. My reluctant ID is Figeater Beetle. Reluctant because of the dorsal coloration: a green central area that's so dull it can look black, flanked by broad areas of dull yellowish brown to brown. These bugs do have the dark femurs and uniformly colored pygidia (you'll have to look that one up) often used to characterize C. mutabilis. I threw in the thumbnail to show that while the end of each antenna often looks club-shaped, it consists of three "tines."