26 THE MOSQUITOES OF NEW JERSEY 



23b Comb of eighth segment of many scales in a triangular patch: 24 

 24a Anal gills as long as or longer than the anal segments: Aides 



trivittatus Coq. 

 24b Anal gills shorter than the anal segment; bud-like or almost ves- 

 tigial: 25 

 25a Lateral abdominal hairs double on segments three to six: A'edes 



sollicitans Walk. 

 25b Lateral abdominal hairs triple on segments three to five, single 



on six: A'edes taeniorhynchus Wied. 

 26a Air-tube with tuft within the pecten ; anal gills three times as long 



as anal segment: A'edes atropalpus Coq. 

 26b Air-tube with the tufts beyond the pecten : 27 



27a Pecten of the air-tube with outer teeth unevenly spaced: 28 



27b Pecten of the air-tube with evenly spaced teeth: 31 



28a Air-tube elongate; comb a patch of scales three rows deep, and 

 gills about as long as the anal segment: A'edes excrncians Walk. 

 28b Air-tube less elongate; about three times as long as wide: 29 



29a Antennae large, enlarged basally; tuft rather beyond the middle: 



A'edes aurifer Coq. 

 29b Antennae moderate only; tuft before the middle: 30 



30a Lateral abdominal hairs double on third to fifth segments; with 

 from ten to fifteen scales in comb on eighth segment, arranged in 

 an irregular double row ; last three or four spines of pecten larger 

 than others: A'edes vexans Meig. (was sylvestris Theob.). 

 30b Lateral abdominal hairs single beyond second segment; air-tube 

 slender; twelve scales on eighth segment in an irregular single 

 row; spines of pecten equal in length: A'edes cinereus Meig. (was 

 fuscus O.S.). 

 31a Anal gills at least twice as long as the anal segment: 32 



31b Anal gills about as long as, or shorter than the anal segment : 33 



32a Anal gills three times as long as the anal segment, full, rounded; 



antenna with a single hair at middle: A'edes triseriatus Say 

 32b Anal gills twice as long as anal segment, pointed; a multiple- 

 haired tuft at middle of antennal joint: A'edes sticticus Meig. 

 33a Anal gills very short, but pointed; air-tube two and one-half 

 times as long as wide; pecten not reaching the middle, followed 

 by a six-haired tuft: A'edes cantator Coq. 

 33b Anal gills about as long as the anal segment: 34 



34a Lower head hairs in tufts of three or more; a small crescent- 

 shaped mark on dorsal surface of head: A'edes canadensis Theob. 

 34b Lower head hairs single or double; dorsal surface of head show- 

 ing no such markings : 35 

 35a Lateral spinules of comb-scales as long as apical one; comb-scales 

 of eighth segment elongate; fourth instar larvae about one milli- 

 meter long: A'edes grosshecld D. & K. 

 35b Lateral spinules of comb-scales shorter than apical one; scales 

 rather broad; fourth instar larvae about 8/10 mm. long: A'edes 

 Stimulans Walk. 



