448 NEW YORK STATE MUSEUM 



gg Comb scales in a triangular patch, about 16, each with one or 



two very short, subapical spines 



Culicelsa auroides 



ggg Comb scales in a curved line, about 15 and with a patch of 

 much finer, comblike scales anterioriy; a large species i^ 

 inches long. . . Giant mosquito, Psorophora ciliata 

 ddd Comb scales 25 or more 



e Antennal tuft before or at the middle 



/ Pecten pale, prolonged into setae; comb scales digitately 

 divided 



g Chitinized parts very dark, stout 



Theobaldia incidens 



gg Chitinized parts lighter and weaker 



h Comb scales about 60, pecten teeth with one or two basal 



processes Culiseta absobrinus 



hh Comb scales 40, pecten teeth with two or three basal 



processes 



Culiseta consobrinus (C. magnipennis) 

 // Pecten not as above 



g Tvift of antenna reduced to a single hair; comb scales about 

 46, in five rows, several pecten teeth widely separated from 



the remainder Culicada atropalpus 



gg Tuft of antennae normal 



h Comb scales with a moderate apical spine, narrowly 

 spatulate at base 

 i Comb scales 28-64; mouth brush moderate; tip of 



antennae dark 



Woodland pool mosquito Cu licada canadensis 



ii Comb scales 2 5 ; mouth brush large 



Culicada pullatus 



hh Comb scales each with a stout apical spine, broadly 

 spatulate at base 



i Air tube about three times as long as its greatest diameter ; 

 antennae moderately' long with a slight swelling near the 

 base, 25-50 comb scales and 16-24 pecten; head im- 

 maculate 



Brown wood mosquito, Culicada subcantans 



ii Air tube about twice as long as its greatest diameter; 



antennae shorter, without a swelling near the base; 



spines and scales as above ; head mactilate 



Brown salt marsh mosquito, Culicada cantator 

 hhh Comb scales with 4-6 stout, nearh^ equal apical spines, 



somewhat spatulate at base 



i Comb scales about 60 in number 



, Culicada lazarensis 



ii Comb scales about 30; pecten teeth 19 



Culicada curriei 



ee Antennal tuft beyond the middle 



/ Comb scales about 80, in a triangular patch of 10 rows, pecten 



apparently simple Culicella dyari 



// Comb scales 25-30, pecten small, 14-20, minutely toothed 

 Golden mosquito, Culicelsa aurifer 



