REPORT OF THE STATE ENTOMOLOGIST 1904 44? 



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

 dividing into 2-4 very long, slender processes 



Grabhamia 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 



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



middle Culicada abserratus 



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



basal spines Culicada dupreei 



//// Comb consisting of eight simple, spinelike processes attached 

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

 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 

 f/ 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 irregular 

 triangula.r 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 



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



evenly spined Culicada varipalpus 



/// 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 



