Definitions for "Puparium"
Keywords:  diptera, instar, larval, hardens, larva
An oblong, cylindrical structure composed of the skin of the mature larva of flies, which hardens and turns brown. The pupa is formed inside the puparium, and the adult fly emerges from this structure.
in some Diptera, the hardened skin of the last larval instar which becomes a protective covering for the pupa
The hardened, thickened skin of a mature larva within which the pupa and adult are formed.