Frass refers loosely to the more or less solid excreta of insects, and to certain other related matter.
Bedstraw hawk-moth caterpillar leaving the frass behind
Typical sculpting of a frass pellet of a large caterpillar
A thistle tortoise beetle larva carrying a mass of its own frass as a repugnatorial defence.
Lepidopteran larva frass after soaking in water
Hyles gallii, the bedstraw hawk-moth or galium sphinx, is a moth of the family Sphingidae. The species was first described by S. A. von Rottemburg in 1775.
Frass
…Bedstraw hawk-moth caterpillar leaving the frass behind Typical sculpting of a frass pellet of a large caterpillar A thistle tortoise beetle larva carrying a mass of its…