WHAT WE SHOULD KNOW ABOUT MOSQUITO BIOLOGY 273 



Table of Adult American Disease-Carrying Mosquitoes 



1. Palpus of female as long as the beak (see fig. 55b) and the wings 

 brown with jellowish-white spots or markings, (Anopheles), 3. 

 Palpus of female shorter than beak (see fig. 55a) and wings with- 

 out definite spots or markings, (Aedes, Cidex), 2, 



Fio. 55. — Types of mosquito mouthparts: a, Short palpus form; b. Long palpus form. 

 (Greene.) A = antenna, 6 = beak, P = palpus. 



2. A dark brown species with two curved, silvery white lines (resem- 

 bling an inverted lyre) on top of body. Yellow fever mosquito 

 (fig. 57), Aedes argent eus. 



/ \ 



Fig. 56 (left. — Adult Culex sollicitans. Much enlarged. (Howard.) From U. S. Dept. 



Agr. Farmers' Bull. 155, fig. la. 



Fig. 57 (right). — The yellow fever mosquito, Aedes argenteus: adult female. Much 



enlarged. (Howard.) From U. S. Dept. Agr. Office of Secy., circ. 61, fig. 13. 



Pale reddish-brown species with top of abdomen much darker and 



with five yellowish-white bands across the top (for a Culex 



see fig. 56), Culex quinquefasciatus. 



3. A dark brown species with a vein near the base of the wing 



yellowish-white and this vein having three distinct dark spots, 



Anopheles crucians. 



