a handbook of the mosquitoes of north america - Systematic Catalog ...

94 MOSQUITOES OF RORTH AMERICA
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KEY TO GENERA OF CULICINI
Adults
Postnotum with a tuft of setae ............. Wyeomyia -2, cm
Postnotum without a tuft of setae ................. .2
Wings with the second marginal cell not half as long
as its petiole ................................. .3
Wings with the second marginal cell more than half
as long as its petiole .......................... .4
Pronotal bristles absent ; spiracular bristles stout,
forming a row ; proboscis strongly curved. . AJegarlzilzzls 23~;’
Pronotal bristles only one ; spiracular bristles only one ;
proboscis straight ..................... Urnno tmia -E* .
Spiracular bristles present ........................ .5
Spiracular bristles absent ......................... .6
Post-spiracular bristles absent ............. Theobaldict I’ ;”
Post-spiracular bristles present ............. Psorophora ’
Pronotal bristles only two stout setae ..... Ortlzofodomyia
Pronotal bristles more than two, generally a prominent
row ......................................... .
Post-spiracular bristles present .................. Aedes .
Post-spiracular bristles absent ..................... .8
Lower mesepimeral bristles absent ......... Deinocerites
Lower mesepimeral bristles present ................ .9
Lower mesepimeral bristles 1 rarely 2 ............ Cztlex ..
Lower mesepimeral bristles three or four. . Tatziorhywhus j*
Larvae
1. Anal segment without ventral brush . . . . . . . . . Wyeonzia ’ *
2. Anal segment with ventral brush . . . . . . . . . . . . . . . . . . .3
3. Air-tube without pecten . . . . . . . . . . . . . . . . . . . . . . . . . .4
Air-tube with pecten . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
4. Mouth brushes of lamellate, prehensile plates Megarlzimrs 1
Mouth brushes not as described above . . . . . . . . . . . . . . ..5
5. Distal half of air-tube sharply attenuated Tmziorlzynchs ’
Air-tube cylindrical or fusiform . . . . . , . Ortlzopodomyia ‘-: