anv. 1. MOSQUITOES OF THE UNITED STATES—DYAR. 45 
296. Mesonotum with paired brown lineS_------------------------------- = 
2M. 
2 
ho 
fle} 
8. 
alte 
Mesonotum uniformly colored, without lines_------------------------ 28. 
Mesonotum golden yellowish, the lines very narrow, well apart; a very small 
species____.----=- ———- == = =< == nnn gonimus Dyar and Knab, 
Mesonotum yellowish, lines usually narrow and well separated; a very small 
SpeCies= 2 a. ae a aldrichi Dyar and Knab. 
Mesonotum yellow (or gray), sometimes more 
or less suffused with brown eentrally, the 
margin remaining yellow; es IEELOW, dysanor Dyar. 
sometimes obsolete; medium sized species___- lazarensis Felt and Young. 
Mesonotum yellow-brown, with two rather narrow Gark lines; a small 
ECTS ee altiusculus Dyar. 
Mesonotum gray with dark lines, usually largely overspread with brown 
centrally; medium sized species__----------------------- 
Mesonotum gray with dark lines, usually little overspread with brown cen- 
trally ; two white spots often on Giigie ga ee ee tahoénsis Dyar. 
Mesonotum yellow (rarely gray), the dark lines broad heavy, well con- 
trasted and passing back around the antescutellar space; a larger species, 
pionips Dyar. 
Mesonotum yellow, lines slender, often conjoined into a median stripe; legs 
very deep black_-------------------- diantaeus Howard, Dyar, and Knab. 
Mesonotum yellow, the side stripes darker and heavier than the median pair ; 
a small species_._---------------------------=--=-=--- cyclocercuius Dyar. 
Mesonotum yellow, lines moderate, normal; a medium sized species. 
leuconotips Dyar. 
Mesonotum yellow to brown, variable, lines present or absent. 
hexodontus Dyar. 
Mesonotum yellow to brown, lines distinct, broad, sometimes joined mesially ; 
a large species_-_------------------------------------- aboriginis Dyar. 
Mesonotum gray with central brown shade; lines fine, dark; a small species. 
impiger Walker. 
Mesonotum mossy yellow; lines narrow and very approximate. 
pullatus Coquillett. 
Mesonotum very light yellow, lines broad, black == iridipennis Dyar. 
é P : alpinus Linnaeus, 
Thorax with long hairs, especially below---------- ---- 4 
= Le zi | nearcticus Dyar. 
Thorax with normal setae in the female_______-------~----------__- 29. 
. Mesonotum light gray, with traces of dark lines, or a central brown shade, 
sometimes covering the whole mesonotum; a small species. 
cataphylla Dyar. 
Mesonotum dark gray. often with whitish trichurus Dyar. 
shades at each side; a large species___—- hee ae Felt and Young. 
Mesonotum uniformly dark brown; a medium sized species, very fond of en- 
tering houses____-------------------------------------- intrudens Dyar. 
Mesonotum with illy contrasted dark lines or uniformly brown; an arctic 
species from the coast of Alaska----------------------- punctodes Dyar. 
Mesonotum uniformly dark brown; venter with longitudinal black stripe. 
fisheri Dyar. 
Mesonotum uniformly golden brown; abdomen spotted__------ thelcter Dyar. 
Mesonotum olivaceous brown, darker shaded centrally, sometimes with dif- 
fused paired brown lines_---------------------------- ventrovittis Dyar. 
