(from the article `dipteran`) ...visible in the pupa. The pupa, however, is not always exposed to view; it may be enclosed either in a cocoon of extraneous matter (e.g., soil, or ...
(pl., puparia)
Pupal stage of certain families of Diptera.
an outer covering that protects the pupae of some flies (the Cyclorrhapha).
dried skin of a fly maggot that surrounds the pupa in much the same way as a cocoon surrounds a moth pupa