174 



4- Flat Scales like those on the head. They 

 cover the scutellum in Stegomyia, whereas in Culex 

 the scutellar scales are of the narrow curved type. 



5. Long Twisted Scales. — Characteristic of 

 Muctdus, a genus of mouldy-looking mosquitoes. 



Abdominal Scales. — The scales covering the 

 abdomen in all Culicidae, except the Anophelinae, 

 are overlapping flat scales. In the Anophelinae 

 they are not found, except to some extent in 

 My zorhynchiis and Nyssorhynchus. In the genus 

 Aldrichia, however, of Anophelina, the abdomen is 

 covered with flat scales as in Culex. 



P^ 



riJlOTHyt 0, 



lano^/t{t: 





Fig. 47. Varieties of Scales {after Theobald). 

 Panoplites = Mansonia 



Wing Scales. — Scales clothe the veins, except 

 the cross veins. Flat scales are arranged in a double 

 row along each vein. 



Many, or in some species all, of the veins 

 have also lateral scales. 



