DIPTERA 



MUSCINA. 



143 



saundersii Wil. 

 Phorantha nigrens Wulp. 



occidentalis Walk. 

 Phorichasta sequax Wil. 

 Plagia americana Wulp. 

 Plusia brevirostris Coq. 

 Polidea asros Walk. 

 Prospheripa cerebra — Chaetogaedia. 

 Pseudoch^ta argentifrons Coq. 

 Pseudomyothris tortricis — Hypostema. 

 Saundersia bicolor — Epalpus. 



signifera — Epa.pus. 

 Scopolia sequax — Phorichasta. 

 Senotainia decisa Town. 



rubriventris Macq. 



trilineata Wulp. 

 Siphona pluslas Coq. 

 Siphoplagia anomala Town. 

 Siphoturmia rostrata Coq. 

 Spallanzania antennalis Coq. 



hesperidarum Wil. 

 Sturmia albifrons Walk. 



distincta Wied. 



occidentalis Wil. 

 Tachina albifrons — Sturmia. 



aleti^ — Front! na. 



algens — Echinomyia. 



analis — Archytas analis. 



californica — Archytas analis. 



capitata — Gonia. 



decisa — Echinomyia. 



dlsjuncta — Sturmia. 



distincta — Sturmia. 



helumus — M eachaeta. 



mella Walk. 



r busta Town. 



robusta — Pelateria. 



sigtniferus — Epalpus. 

 Tachinomyia robusta — Tachina. 

 Tliereva plumipes — Trichopoda. 

 Trichopoda pennipes Fabr. 



plumipes Fabr. 



Figure 



Tachina 



Winthemia adusta Loew. 



antennalis Coq. 

 Xanthomelana arcuata Say. 



CESTRID/E. 



The bot flies are parasitic on animals, CEstrus on sheep, Hypoderma on 

 cattle, Gastrophilus on horses and Cuterebra and Bogeria on rodents. 

 SYNOPSIS OP GENERA. 



Cuterebra: mouth parts not rudimentary. Bogeria: arista bare. 



Gastrophilus. CEstrus and Hypoderma: first posterior closed or nearly so, 

 the first with the median groove of the face narrowed below. 



Bogeria princeps Hust. 

 Cuterebra latifrons Coq. 



leporivora Coq. 



nitida Coq. 



ternebrosa CCq. 

 Gastrophilus equi (Clark.) 



nasalis (Linn.) 

 Hypderma lineata Vill. 

 CEstrus equi — Gastrophilus. 



nasalis — Gastrophilus. 



ovis Linn. 



