THE FLIES THAT CAUSE MYIASIS IN MAN 



37 



A 



B 



Figure 9. — Wohlfahrtia vigil, details of larvae; posterior spiracles of .1, first- 

 stage; B, second-stage; C, third-stage larva; /), posterior view of last segment 

 of mature larva. (After Walker ( 158, p. 173).) 



