Like all limacodids, the legs are shortened and the prolegs are reduced to suction cups. A high proportion of larvae have parasitoids. Their presence can be determined before emergence by a black spot formed by the breathing siphon of the fly.
The description highlights the shared features of limacodids, including their leg structure, proleg reduction, and parasitism prevalence in larvae. The presence of a black spot on the fly's breathing tube serves as an indicator for their presence before emergence.