Formerly called Red-waisted Whiteface. Mature males are black with pruinose white on the top of the abdomen and usually some dark red between the wings. They resemble a large gangly version of Frosted Whiteface. The red form, which closely resembles Crimson-ringed Whiteface, has not been recorded in New Jersey to our knowledge.
Females may be recognizable if they develop pruinosity similar to the males. Otherwise they closely resemble Crimson-ringed Whiteface with a row of narrow yellow or red spots on S1-S7.