6i 



the female Culicinae, however, the palps are quite 

 short and insignificant structures, whereas in the female 

 AnopbelinaethesQ are scaled and as long as the proboscis. 

 An examination of the female proboscis will at once 

 determine whether an insect belongs to the sub-family 

 Anophelina or other sub-family. 



2. The wings in nearly all species of Ano-phelines 

 are ' spotted,' but this is only a popular and not a 

 scientific criterion. By the use of the low power of the 

 microscope or an ordinary lens, these spots are seen 

 to be due to the presence of areas of dark scales upon 

 the wing veins, elsewhere covered with light scales. 



Fig. 19. Shewing distinction between 'palpi of Female Anopheline 

 (right) and a Culicine (left) 



There are, however, a few members of the 

 Anophelinae which have not spotted wings (e.g., 

 A. bifurcatus, and the Indian A. immaculatus). Also 

 there are other mosquitoes than Anophelines which 

 have spots, e.g., C. mimeticus (costal spots), also 

 mosquitoes of the genera Tbe'obaldia and Lutzia. 

 Nevertheless, as a general rough rule, mosquitoes with 

 spotted wings are Anophelines. 



3. The angle which the proboscis makes with the 

 rest of the body is very different in Anopbelines from 

 that of other mosquitoes. In Culex, Taeniorbyncbus, 

 or Stegomyia, the proboscis forms a distinct angle with 

 the line of the body (Taeniorhynchus, forty-five 

 degrees). In the case of Anophelines, the proboscis 

 continues on in the line of the body (P. stepbensi, 

 fifteen degrees). The result is to give to an Anofheline 



