ANOPHELINES OF MEXICO, CENTRAL AMERICA AND WEST INDIES 
95 
irregular in length; leaflets of palmate hairs 
always pointed .10 
10. Well-developed palmate hairs present on all 
abdominal segments (1 to 7); lateral ab¬ 
dominal hairs present on segments 4, 5, and 
6; clypeal hairs variously arranged (sub¬ 
genus Nyssorhynchus ) . 15 
Well-developed palmate hairs present on ab¬ 
dominal segments 2 to 7 only; lateral ab¬ 
dominal hairs present or absent on segment 
6; inner clypeal hairs close together; outer 
clypeal hairs simple.11 
11. Well-developed palmate hairs present on ab¬ 
dominal segments 2 to 7 only; lateral ab¬ 
dominal hairs present or absent on segment 
6 ., ..........12 
Well-developed palmate hairs present on ab¬ 
dominal segments 3 to 7 only; lateral ab¬ 
dominal hairs present on segments 4 and 5 
12. Lateral abdominal hairs present on segments 
4, 5 and 6 single; one of the two long meta- 
thoracic pleural hairs branched at tip; pal¬ 
mate hairs with narrow, lanceolate, smooth 
leaflets. abgybitabsis 
Lateral abdominal hairs present on segments 
4 and 5 only, absent on 6; both long meta- 
thoracic pleural hairs simple.13 
13. Lateral hair of third abdominal segment stout, 
plumose, normal; lateral abdominal hairs of 
segments 4 and 5 normally double; elements 
of palmate hairs wide, with serrations be¬ 
yond middle; usually a small, transparent 
larva (Central and South American main¬ 
land) . EISENI 
Lateral hair of third abdominal segment with 
slender, straight central shaft, with fine 
lateral branches difficult to see; lateral ab¬ 
dominal hairs of segments 4 and 5 simple, 
short, slender; elements of palmate hairs 
long, lanceolate, with faint serrations; a 
very large dark larva (Central America at 
high altitudes, syn. chiriquiensis) ... 
PARAPUNCTIPENNIS 
14. Inner anterior clypeal hairs notably thicker 
and stronger than outer clypeal hairs; all the 
long hairs of the prothoracic pleural hair- 
group simple; lateral hairs of abdominal 
segments 4 and 5 usually single; a dorsal 
longitudinal white line usually present on 
thorax and abdomen . neomaculipalpus 
Inner anterior clypeal hairs not notably thicker 
and stronger than outer clypeal hairs; an¬ 
terior dorsal hair of the prothoracic pleural 
hair-group with a few lateral branches; 
lateral hairs of abdominal segments 4 and 
5 usually double; dorsum of thorax and 
abdomen variously marked. apicimacula 
15. Posterior plates of spiracular apparatus with 
two long filaments arising from strong 
tubercles about midway of length of plate; 
spurs at bases of pleural hairs very long, 
strong; inner prothoracic submedian hair 
with fine branches from slender shaft. 
DABLINGI 
Posterior plates of spiracular apparatus not 
as above, without long filaments; spurs at 
bases of pleural hairs moderate; inner pro¬ 
thoracic submedian hair not with fine 
branches from slender central shaft.16 
16. Inner prothoracic submedian hair with shaft 
thickened and widened, with many hairlike 
lateral branches; anterior dorsal hair of pro¬ 
thoracic pleural hair-group with many fine 
lateral branches . albimantjs 
Inner prothoracic submedian hair palmate; all 
the long hairs of the prothoracic pleural 
hair-group simple..1,17 
17. Inner anterior clypeal hairs so spaced that 
distance between them is more than one- 
third of the distance between the inner and 
the outer clypeal hairs.18 
Inner anterior clypeal hairs so spaced that 
distance between them is less than one-third 
of the distance between the inner and the 
outer clypeal hairs; elements of abdominal 
palmate hairs notably very long, smooth, 
pointed .•..;..21 
18. Anterior clypeal hairs nearly evenly spaced, 
with few fine lateral branches .19 
Anterior internal clypeal hairs closer than dis¬ 
tance between inner and outer clypeal hairs, 
and with many coarse lateral branches.20 
19. Inner submedian prothoracic hair small, pal¬ 
mate, about one-third the length of the mid¬ 
dle hair, with about 15 to 18 very fine, hair- 
like leaflets; larva small, usually dark green 
with white spots . bachmanni 
Inner submedian prothoracic hair very large, 
about half the length of the middle hair, 
palmate, with about 15 narrow lanceolate 
leaflets, usually heavily infuscated; larva 
large, variously colored . albitabsis 
20. Outer anterior clypeal hairs with many lateral 
branches from shaft; inner submedian pro¬ 
thoracic hair palmate, with about 12 broad 
lanceolate blunt-tipped leaflets; outer pair 
of frontal hairs of head not notably longer 
and stronger than other frontal hairs 
(brackish water breeder). tarsimaculatus 
Outer anterior clypeal hairs with few lateral 
branches from shaft; inner submedian pro¬ 
thoracic hair palmate, with about 10 broad 
lanceolate leaflets; outer pair of frontal 
hairs of head notably longer and stronger 
than other frontal hairs (fresh water 
breeder) . oswaldoi 
21. Inner anterior clypgal hairs very close to- 
