REPORT OF THE STATE ENTOMOLOGIST I904 44?. 



/ Comb scales 5-8 attached to a slight band; pecten teeth 5-8 

 dividing into 2-4 very long, slender processes 



G r a b h a m i a discolor 

 ee Comb scales rather broadly spatulate at the base, few, arranged 

 in a curved line 

 / Comb scales five, pecten teeth 7-9, minutely serrate near the 



middle Protoculex serratus 



ff Comb scales six, pecten teeth 12-16, stoutly toothed near the 



middle Culicada abserratus 



ffj Comb scales 8-10 in a curved line; 12 pecten teeth with short 



basal spines Culicada dupreei 



ffff Comb consisting of eight simple, spinelike processes attached 

 to the posterior margin of a large lateral plate ; air tube shghtly 

 curved; pecten with basal portion thick, margins and apical 



parts nearly transparent, serrate 



Uranotaenia sapphirina 



dd Comb scales ranging from 10-24 



e One or more pecten teeth widely separated from a continuous 

 row 



/ Two rows of slight tufts of hair on the dorsum of the air tube; 

 comb scales 14-16, usually four pecten teeth widely separated 



from the remainder of the row 



Northern gray mosquito, Culicada trichurus 

 ff No such dorsal tufts on the air tube 



g Air tube slender, tapering equally, the continuous pecten 

 extending only to the basal fifth of the air tube; pecten 



teeth 2-3, toothed; comb scales 10-14 (Smith 18-20) 



Swamp mosquito , Ecculex sylvestris 



gg Air tube slender, tapering slightly, the continuous pecten, 

 each usually with a single tooth, extending to the basal fourth ; 

 two or three somewhat flattened, isolated pecten teeth 

 extending beyond the middle, the tufts near the apical third; 



comb scales 12 nearly in a single row 



Aedes fuscus 



ggg Air tube stouter, slightly swollen, continuous pecten 

 extending to the basal third, 15-18, with 2 isolated pecten 

 teeth 1-2 toothed; comb scales 14 in a somewhat irregiilar 

 triangular patch, spatulate, each with a rather stout termi- 

 nal spine; Culicada impiger 



ee Pecten in a continuous row, distal teeth not widely separated 

 / Comb scales narrow, elongate, tapering, 12 in an irregular 



double row, finely setose apically 



Culicada triseriatus 



ff Comb scales 16, elongate, base slightly elliptic, sides and apex 



evenly spined Culicada varipalpus 



fff Comb scales with a distinct spatulate base and large apical 

 spine 



g Comb scales 14-22, the minor spines nearly as long as the 

 median one Culicada trivittatus 



