MOSQUITO BIOLOGY 



197 



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Fig. lxvii. Adult of spotted-legged mosquito. Psorophora columhiae D. & K. 

 (After John B. Smith.) 1, female adult; 2, anterior, 3, middle and 4-, 

 posterior claws of male (all enlarged). 



of female. Wings hyaline with veins clothed with mixed black and white 

 scales ; at base of radius 4-1-5 small portion has no white scales, mak- 

 ing distinct black spot. 



Abdomen jet black, first segment with patch of yellowish white 

 scales in center of apical margin ; second banded with scales prolonged 

 forward in middle ; following segments with two C-shaped marks, back 

 to back, but divided by black. These marks sometimes diffused or be- 

 come less curved posteriorly, until apical segments have two longi- 

 tudinal marks. Brownish or slate colored beneath. 



HABITS OF THE ADULT 



Though this is scarcely to be considered a rare mosquito, it appears 

 to be very local, and as an adult does not seem to get away from the 

 immediate vicinity of its breeding pools. Although a lively breeding 

 place is only a few hundred feet from my house, the species has never 

 made its appearance on my porch. Adults could be collected easily 



