INSECTS AFFECTING HEALTH OF MAN OR ANIMALS. ll 
MALARIA MOSQUITOES. 
There are several kinds of mosquitoes that convey malaria, all 
belonging to the genus Anopheles (figs. 8 to 12). They do not differ 
greatly in appearance from other mosquitoes. In most Anopheles 
the wings are distinctly spotted. These mosquitoes have very slen- 
der legs and the body does not have the ‘‘humped-back”’ appearance 
of other mosquitoes. When resting upon a wall or other surface, 
or when biting, the body is tilted—that is, the tail end slants away 
= 
Fic. 9.—A malaria mosquito, Anopheles punctipennis: Female mosquito. Greatly 
enlarged. (Howard.) 
_ from the surface upon which the mosquito is resting. The malaria 
_ Mosquitoes usually bite late in the evening and early in the morning, 
_ but in shady places and when hungry they will bite in full daylight. 
_ They commonly breed in springs or in water holes in stream beds, 
and frequently even in running streams, along the edges, where the 
current is less rapid and where they find shelter among vegetation or 
obstructions. The larve are easily recognized by the fact that they 
float horizontally at the water surface, only diving down when 
thoroughly alarmed. 
