FAMILY PIOPHIIJD.T: 



311 



Piophilida?. — 1, 2, Piophila; 3, Prochyliza. 



folds roughened, the posterior segment with four fleshy protuberances. 

 The larva jumps by grasping the edge of the posterior truncature of 

 the body with its mouth hooks and suddenly releasing it. The puparium 

 is rugose and elliptic. 



The members of this family have been placed in the Sepsida? by 

 most authors. The family differs from the Sepsidse in several char- 

 acters, particularly in having the costa broken at the end of the aux- 

 iliary' vein, setulose mesonotum and the absence of a hair or fine bristle 

 arising on the posterior edge of the posterior spiracle of the thorax. 

 i\Ielandcr* has reviewed the family. 



KEY TO GENERA 



1. One or two pairs of frontal bristles 2 



No frontal bristles; face strongly receding; antennae variable in length 



(3) Prochyliza WalTcer 



2. Two pairs of dorsocentral bristles 3 



One pair of dorsocentral bristles (1, 2 and text fig.) Piophila Fallen 



3. One pair of frontal bristles (text fig.) Amphipogon Wahlberg 



Two pairs of frontal bristles Mycetaulus Lcew 



1924, Psyche, xxxi, pp. 78-86. 



Amphipogon spectrum. 



