Family 36. 



ORDER DIPTERA. 



Tribe III. Homaloptera. 



Hoppoboscidae or Forest Flies. 

 Nycteribidae or Bat Lice. 

 Braulidse or Bee Lice. 



89 



Tribe IV. Aphaniptera, 

 Family 39. Pulicidas or Fleas. 



The number of families comprised in the Diptera is so great 

 that space will only permit us to deal very briefly with each. 



Fig. 122. — Epidosis Leuccpeza (Mng.) 



Tribe I. — Nemocera. 



This tribe contains many well-known insects — namely, the 

 Midges, Gnats, Daddy-longlegs, etc., which are divided into twelve 

 families. 



Family i, Cecidomyiidce. — These are small delicate species, 

 generally clothed with long hair. They are all vegetable feeders, 

 some of them being very destructive to crops. The Hessian Fly 

 {Ceddo?nyia destructor) is probably one of the best-known species, 

 on account of the terrible mischief which it has caused in various 

 countries, and particularly in the United States of America. Miss 

 E. A. Ormerod, the well-known economic entomologist, has 

 recently written a great deal concerning this insect, with the view 

 to preventing its increase in our own country. 



