MOSQUITOES IN GENERAL 



Mosquitoes and their Allies. — As members of the 

 insect order Diptera the mosquitoes partake of the 



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Fig. ''. .1 shows portion of wing of Anopheles mosquito, illustrating characteristic 

 scales of the family Culicidae and spots of Anopheles. B, Diagram of the wing of a mos- 

 quito with nanus of cells and veins useful in classification. (Adapted after Coquilleii.) 



general characters of the order, namely, reduction of 

 the posterior pair of wings which are represented by 

 a pair of small, knobbed organs known as the halteres, 



3° 



