Wing Fringe. (i) Long narrow pointed scales 

 attached to the edge of the wing by a 

 narrow stalk. 



(2) Short scales similar in shape. 



(3) Border scales are generally flat but may be 



variable. 



Leg Scales. Nearly always flat. In the sub- 

 family Anophelina examine the genus Lophoscelomyia 

 (e.g., L. asiatica), which, as the name implies, has dense 

 scale tufts on the hind femora. In the sub-family 

 Culicina examine Sabethes (e.g., S. remipes), with its 

 dense tufts (paddles) on the tibia and metatarsus ; 

 and Mucidus (e.g., M. africanus) and Psorophora (e.g.-, 

 P. ciliata), with the leg scales elongated and erect. 



To DETERMINE THE SPECIES 



Having determined firstly that a mosquito is an 

 Anopheline,* and secondly to what genus it belongs 

 (p. 152) the final step is to find out the species. The 

 most important distinguishing features are : 



(i) The Costal Spots. The main spots on the wing 

 are formed by areas of dark scales on the costal, 

 auxiliary and first longitudinal veins. These spots are 

 fairly constant in each species, but variations occur, 

 e.g., in the typical T spot of M. rossi and in the 

 characteristic spot of N. stephensi (Fig. 59), and they 

 may not even be the same on the right and left wings, 

 but notwithstanding, the costal spots are of great 

 importance in determining the species. 



The Wing Field. The accumulation of dark 

 scales, here again causes a number of minor spots on 

 the veins, thus the dark areas on the third longitudinal 

 vein in M. funesta, M. listoni and M. culicifacies are 



* We only attempt here to describe Anophelines. 



