D8. 
39. 
40. 
41. 
44, 
45. 
47. 
49. 
50. 
THE MOSQUITOES OF THE SOUTHEASTERN STATES 
Upper head hairs double, lower double or triple; antennae unusually 
KO ra MAL” [ORO NETO ETIN Gee i se ee 
Upper and lower head hairs single; antennae normal, no longer than 
DAN SEEN es Sena eS ae a eae eee Oe eee ae eee 
Lateral abdominal hairs single or double on segments 4 to 6: later: al hair 
Ofeanaleses ments branched strom: Meats) ASCs se ane ee ee ee 
Lateral hairs usually multiple, with three to five branches, on segments 
3 to 6; lateral hair on anal segment branched at tip or single. [Pecten 
with three or four short spines; tuft of air tube small and laterally 
placed; comb with seven seales.] (Rozeboom, 135) P. horrida 
Pecten of four to six spines, each with a small basal tooth on each side, 
subequal in size; lateral abdominal hairs double on segments 8, single 
on segments 4 to Gre COMDTOfehivies sal CS isan eee ___P. varipes 
Pecten of three or four long spines, each except the basal pair with a 
comparatively long basal tooth on one side, and usually with one or two 
much smaller ones on the same side, sometimes a very small tooth on 
opposite side; lateral abdominal hairs branched three or four times on 
segment 3, double on segment 4, and single on 5 and 6; comb with seven 
ORRCIZ Nt SCA eg es ke ae se Pe ea Oh es Gi a P. feroxr 
Air tube with a pair of long hairs at tip; pecten with three or four 
SIM CS eset ieee is ee ere nek nee MU ent ae ure aa = ‘es 
Hairs at tip of air tube inconspicuous ; pecten with six spines 
P. pygmaea 
Antennal and preantennal tufts multiple, conspicuously feathered; tip of 
antenna with three short apical spines and two longer subapical spines ; 
SixXerCOMD ACCA CS ween see eer eee a ee P. signipennis 
Antennal and preantennal tufts with two or three branches, some of 
which may be secondarily divided, sparsely feathered; antenna with 
three long apical spines only; four comb scales_________ P. cyanescens 
AEDES 
. Upper head hairs multiple, lower ones double or multiple (fig. 21). [Anal 
segment not completely ringed by the sclerotic plate; tuft of air tube 
FG 4 Ge a fc a 
Hither the upper or the lower head hairs single (both pairs single except 
aAStShOwMeund cr=individual SNPeCieS) ja. = as se eee 
Pecten with one to three distal teeth more widely spaced (fig. 24, A); 
comb of few scales in a single irregular or partially double row______ 
Pecten with evenly spaced teeth; comb seales in a triangular patch______ 
Upper head hairs with three to five branches, lower ones usually with 
two or three; lateral abdominal hairs double or triple on segments 
SOME ge ae een ie te ae ee ee eee eee A. verans 
Upper and lower head hairs with more than four branches; lateral ab- 
dominal hairs single on segments 3 to 5_______________ __A. cinereus 
SR Tepe Tee ING ACH SEM AMES CLO UND 1 a 
Lower head hairs with three or more branches___-____________________ 
Single comb seale with a long apical spine Eee A StICLiCUs 
Single comb scale with lateral spines nearly as long as apical spine 
A. grossbecki 
. Upper lateral hairs on abdominal segments 1 and 2 double, lower hairs 
single or double; antennae much shorter than head and little longer 
than preantennal hair; comb scales rounded and fringed with sub- 
COMAPES PMN Suerte, Dele ate a ee ey A. canadensis 
Upper lateral hairs or both pairs on segments 1 and 2 multiple; antennae 
nearly as long as head and much longer than preantennal hair; comb 
scales with apical spine somewhat longer and stouter than other 
SFO DN SS ec Sy SS a SS pate i ee A. thibaulti 
Pecten with the distal teeth more widely spaced. [Comb of many scales 
in a patch, single scales with apical fringe of subequal spinules. ]——-~ 
Pectenswithevenly spaced teeth=—_ === = ss=— 52) Eau! 
Both head hairs single; lateral hairs multiple on segments 3 and 4: scle- 
rotic plate on anal segment small, covering about half the segment ; 
| OXON? GW OHO Ma ee a eee a A. atropalpus 
Lower head hairs double: lateral hairs usually single on segments 3 
to 5; anal segment completely ringed by plate; body  spicular- 
Oc Cea ener ereaen amie Nie Ay Ph ey A. fulvus pallens 
42 
44 
49 
45 
46 
47 
48 
Kc 
51 
