APPENDIX 229 



2. A very large species with very scaly wings, the sides of 

 the thorax and bands of the abdomen and feet, white, 

 Acdes grossbecki D. and K. 



3. Wings thickly clothed with mixed yellow and brown 

 scales. Thorax with broad, brown central stripe. 

 First tarsal segment of anterior legs not banded, Aedes 

 fitchii Felt. 



4. A small, dark species with lightly scaled wings; the 

 white bands of the feet narrow; those of the abdomen 

 nearly divided in the center, Aedes vexans Meig. 



5. A good-sized brown species with the bandings yellowish 

 rather than white; these of the abdominal segments 

 only a little or not at all notched at the middle, Aedes 

 cantator Coq. 



6. Very like the preceding; but the bands of the abdomen 

 and feet are broader and somewhat lighter. Breeds 

 only in fresh water areas, Aides stimvlans Walker. 



7. Very like the two precediug, but thorax has a central 

 brown stripe, Aedes abfttchii Felt. 



(£>) The joints of the hind feet at least are white-banded or ringed 

 at both base and tip, while last joint of the hind tarsi is 

 usually entirely white. 



1. A good-sized brown species, the thorax without lines or 

 marks; bands of tarsal joints broad, Aedes canadensis 

 Theob. 



2. A small, blackish species with top of thorax covered with 

 gray hair and a dark line down its center; bands on 

 tarsi are white and narrow, Aedes atropalpus Coq. 



(c) All of last two tarsal joints and apex of middle joint white. 



1. A large or medium-sized species, black with deep purple 



reflections, Psorophora (Janthinosoma) sayi D. and K. 



B. IX WHICH THE FEET ARE UNIFORM IX COLOR, XOT IX AXY 

 WAY MARKED OR BAXDED 



I. The Thorax is Marked in Some Way With Stripes or Spots, 

 or the Sides are White or Golden Brown. 



(a) Species with longitudinal white or blue stripes. 



1. There are two white longitudinal stripes; the species 

 is moderate-sized and blackish, Aedes trivittatus Coq. 



2. There is a well-defined broad central white band, and 

 the top of the head is also white, Acdes atlanticus D. and 

 K. 



3. There is a diffuse white central stripe, not defined as 

 before; a very small blackish species, Aedes dupreei Coq. 



4. There is a central bluish stripe, also blue spots. A 

 small, dark-brown species, Uranotaenia sapphirina O. S. 



(b) Species in which the thorax is yellowish, white or brown, 

 leaving a blackish central stripe or two, usually not sharply 

 defined; all of moderate size. 



