39. 
40. 
41. 
42. 
44. 
45. 
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50. 
THE MOSQUITOES OF THE SOUTHEASTERN STATES 
. Upper head hairs double, lower double or triple; antennae unusually 
OTN Se AU CD ee FO TT IE 0 Be ee es ses ee eS ees 
Upper and lower head hairs single; antennae normal, no longer than 
UN 2a ss ea a ee ee Se es eh Se 
Lateral abdominal hairs single or double on segments 4 to 6; lateral hair 
Of anal sezment pranchederrom) nears bases a=. a2 ae 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 scales.] (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 3, single 
on segments 4 to 6; comb of five scales_____________________ 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 
Orel Shite SCA xe se ie eae ee ee er ec Ae Sk P. ferox 
Air tube with a pair of long hairs at tip; pecten with three or four 
SPDT CS eee oe ry eee reene Sade acne es eee ey ee ear oe oe 
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 ; 
Sixe COM aSCal CS eee ee eee Ces ee Re 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 
TSO TOC Es] Cee Lee | ten sae ee ee a ee Ee BS 
Hither the upper or the lower head hairs single (both pairs single except 
ac Shown underaingivi dual SDCCICS ) == a= a ee ee ee 
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 scales 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 
So Oe ce eee ese cee age Oe ree sane noe Mica ay ee et RY A. verans 
Upper and lower head hairs with more than four branches; lateral ab- 
dominal hairs single on segments 8 to 5___________________ A. cinereus 
SLOW CLG AG all Ane Se CLOUD] em em ne en me i ee ees oe ee 
Lower head hairs with three or more branches________________________ 
Single comb scale with a long apical spine_________________ A. sticticus 
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- 
GUESTS TD RUT LS ee ve ce ere ee 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 
STD TN (2s ewe ere rege eee ee ee ee RS 8S 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.]__-~ 
inectenewith-evenly spaced: teetho= 25 22) oe ee 
Both head hairs single; lateral hairs multiple on segments 3 and 4; scle- 
rotic plate on anal segment small, covering about half the segment; 
OC aR OTA O Ul Sete eee eee nr een Art eS ER A. atropalpus 
Lower head hairs double; lateral hairs usually single on segments 3 
to 53; anal segment completely ringed by plate; body spicular- 
Rilesefe ee ee ee Hes so a ea A. bimaculatus 
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