9 spp. in our area(1)(2)
byersi Karren (NY-VA-AL to MI-KS-TX-AZ)
deserti Pierce sw. US (CO-NV to TX-CA) into Mexico
gibber (Fabricius) s. US (PA-FL-TX); often on oaks
Resemble caterpillar/mouse droppings.
Key to spp. in Karren (1966) (2)
Most of our spp. associated with Asteraceae (1)