174 COMPARATIVE ANATOMY 



a fly, is a popular one, and in common language is loosely 

 applied to all sorts of insects belonging to the family Culicidae, 

 and even to other families. As a rule where Culicidae are very 

 abundant and pertinacious they are called mosquitoes ; 



Fig. 36. 



On the left hand a figure of a " dapple- winged" mosquito, Anopheles 

 iimculipennis, O. ; the small figure below indicates the natural size of 

 the animal. On the right hand a fully grown specimen of the aquatic larva 

 of the same species, about eight times the natural size. Ant, antennae ; 

 mxp, maxillary palp ; st, stigmatic opening of the respiratory organs of 

 the larvae. (After Nuttall and Shipley.) 



where less troublesome they are called gnats. The true 

 mosquitoes and gnats are dipterous insects of the family 

 Culicidae. They have small heads with large eyes ; slender 

 bodies and legs ; a single pair of narrow wings ; and long 



