252 Mosquitoes 



5. With a double hair on thorax long enough to 



reach from eye to breathing tubes and 

 bent in two approximately right angles, situ- 

 ated in the dorso-caudal angle between the 

 eye and the antenna case. A large, plumose 

 tuft, longer than the segment, on the lateral 

 caudal angle of the last and penultimate seg- 

 ments Wycomyia smitJiii. 



With no such hair or tufts 6 



6. Breathing tubes very slender, over nine times as 



long as wide. Stellate tufts of widely diverg- 

 ing hairs on head, thorax and abdominal seg- 

 ments three to five. . Uranotaznia sappliirina. 

 Breathing tubes never nine times as long as wide. 

 No stellate tufts, though sometimes a tuft of 

 not more than four widely diverging hairs on 

 some of the abdominal segments 7 



7. With D conspicuously longer (four or five times.) 



than E or F Deinocerites cancer 



With D not conspicuously longer than E or F . . 8 



8. Having M on abdominal segments five and six 



represented by a single hair. 



GrabJiamia jamaicensis. 



Having M on segments five or six composed of 



two or more hairs .9 



Q. K, at least on segments five and six, composed 



of a single hair 10 



K on segments five and six, of two or more 

 hairs 15 



10. With K on segments five and six noticeably 



shorter than the following segments 12 



With K on segments five and six about as long 

 as, or longer than, the following segments. . 1 1 



