1930 ] Key to the Mosquitoes of New England 
239 
7. Mesonotum with median band very broad, lateral 
lighter color narrow 8 
Mesonotum creamy yellow at the sides hirsuteron 
Mesonotum golden or reddish brown at the side, me- 
dian stripe sometimes divided or obsolete punctor 
8. Yellow lateral lines straight and narrow aurifer 
These lines narrowed posteriorly, pale gray ... trichur us 
9. Mesonotum with paired brown lines 10 
Mesonotum uniformly colored, without lines 11 
10. Mesonotum yellow^ or gray, very variable, sometimes 
suffused with brown centrally, or the lines obsolete ; 
medium-sized to rather large species, legs black, 
venter yellowish white communis 
Legs black with bronzy reflection, venter white 
implacabalis 
Mesonotum yellow, lines slender, often conjoined into 
a median stripe, deep black diant seus 
Mesonotum gray with central brown shade, lines fine, 
dark, a small species impiger 
11. Mesonotum uniformly dark brown, somewhat bronzy, 
lower mesepimeral bristles present, a medium sized 
species intrudens 
Mesonotum uniformly brown; abdomen with continu- 
ous lateral white line, male with short palpi; mese- 
pimeral bristles absent cinerus 
12. Tarsi with white rings involving both ends of the 
joints 13 
Tarsal white rings basal only 15 
13. Wing-scales markedly bicolored dorsalis 
Wing-scales uniformly dark, or nearly so 14 
14. Mesonotum uniformly brown, or nearly so ...canadensis 
Mesonotum pale, with broad dark median stripe 
atropalpus 
