browntail mothbrown·tail moth
a white moth (Euproctis chrysorrhoea) whose larvae are harmful to trees and cause an irritating skin rash
also written brown-tail moth
Origin of browntail mothso named from the brown coloration of the end of its abdomen
A tussock moth (Euproctis chrysorrhoea) with white wings and a tuft of brown hair at the tip of the abdomen, whose caterpillars defoliate shade trees and have irritating hairs that cause a skin rash on contact.