Identification Keys 253 



11. H on segments five to seven single. D, F, 



and G two-haired. M on segments four to 

 six, two-haired. K on segments five to seven 

 not noticeably longer than the following 



segments Ochlerotatus triseriatus. 



H on segments five to seven, double. D, F, and 

 G three-haired. M on segments four to six, 

 three- or more haired. K on segments five to 

 seven noticeably longer than the following 

 segments OcJilcrotatus dupreei. 



12. Segment eight having H of two or more 



hairs 13 



Segment eight having H of one hair 14 



13. F double, with a long single hair exceeding it 



in length just in front of it. H on ninth seg- 

 ment large, composed of about five stiff hairs 

 which are conspicuously plumose at about 

 half their length ; on segments five and six 

 double; two tufts on ventral side of segment 



three Stegomyia calopus. 



F double, with no long hair in front of it. H 

 on ninth segment of six or seven small hairs 

 not noticeably plumose ; on five to seven sin- 

 gle hairs. No tufts, but one hair, on ventral 



side of segment three 



OcJilerotatas varipalpus. 



14. G three-haired. H on segments four to six, 



double ; on segment eight single, with a 

 hair just ahead. D, E, and F, two-, three-, 

 and two-haired respectively. Breathing tubes 



five times as long as wide Aedes fuscus. 



G single. H on segments four to six, single; 

 on segment eight a small double hair, with 

 no hair ahead. D, E, and F, two-, two-, and 

 one-haired respectively. Breathing tubes 



three times as long as wide 



Janthinosoma varipes. 



