Glenn saw these tiny beetles (3.5mm – 6mm) everywhere on the saddle of Mount Jumbo as the sun got low in the evening. Unfortunately, we weren’t able to find a lot of information about this species, other than they are often found under pine bark. Sap-feeding beetles (family Nitidulidae) have an incredibly varied diet that includes nectar, sap, rotting wood, fruit, fungi, carcasses, seeds, and other insects. Some transmit fungi that cause disease of plants. Members of the genus Glischrochilus are all glossy black marked with yellow or red and may fly in fair numbers to sap and decaying fruit.
Photo by Glenn Marangelo on 10/3/20 on Mount Jumbo near Missoula, MT