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Chapter XIV 



ANOPHELINAE. EXTERNAL ANATOMY 

 OF THE IMAGO 



The Head 



The head is composed mainly of the two 

 large compound eyes. These meet below and 

 approach one another very closely above. 



Parts of the head. The following are the 

 usual names for the different regions of the head 

 (Fig. 42). 



1. The nape : the extreme back of the head. 



2. The occiput : the portion behind the eyes. 



3. The vertex : the space between the eyes. 



4. The frons : the space in front of the eyes. 



5. The gena : the side of the head below 



the eyes. 



The frons is triangular in shape, with one 

 angle directed downwards. From the upper two 

 angles arise the antennae, and from the lower 

 projects the clypeus, lying over the base of the 

 proboscis. 



The Clypeus. — Projects over the base of the 

 proboscis as a prolongation of the frons. The 

 character of the clypeus is of specific importance. 

 It is 



1. Hairy in Culex. 



2. Scaly in Stegomyia. 



3. Nude in Johlotia. 



