INSECTS 



tion. Its skin now hardens and contracts until the 

 creature takes on the form of a small, hard-shelled, oval 

 capsule, called a puparium (Fig. 182 E). 



Fig. 182. The house fly, Musca domestica 



A, the adult fly (5 % times natural size). B, the house fly egg (greatly magnified). 



C, larvae, or maggots, in manure. D, a larva (more enlarged). E, the puparium, 



or hardened larval skin which becomes a case in which the larva changes to a 



pupa. F, the pupa 



I 344] 



