Diptera 
291 
hh. With shorter proboscis; the petiole of the anterior forked 
cell arises near the base of the wing . 
. Psychoda, Pericoma, etc. 
gg. The r-m crossvein placed at or beyond the center of the wing; 
wings not folded roof-like over the abdomen, 
h. Proboscis short, not adapted for piercing; wings bare (Dixi- 
d^e); or wings scaled (CuuciDdE, Subf. CorethriNjE). 
hh. Proboscis elongate, adapted for piercing; wings scaled, 
fringed on the hind margin; antennas of the male bushy 
plumose. Mosquitoes . 
.CuliciDjE (exclusive of Corethrix^e) 
i. Metanotum without setae. 
j. Proboscis strongly decurved; body with broad, ap- 
pressed, metalescent scales; cell R 2 less than half as 
long as its petiole; claws of female simple, some of the 
claws of the male toothed. Several large southern 
species believed to feed only on nectar of flowers 
. Megarhinus R. D. 
jj. Proboscis straight or nearly so, or otherwise different, 
k. Scutellum evenly rounded, not lobed; claws simple in 
both sexes. Anopheles Meig. 
I . Abdomen with clusters of broad outstanding scales 
along the sides; outstanding scales on the veins of 
the wing rather narrow, lanceolate; upper side of 
the thorax and scutellum bearing many appressed 
lanceolate scales. Florida and southward (Cellia). 
m. Hind feet from the middle of the second segment 
largely or wholly snow white, 
n. With a black band at the base of the last seg¬ 
ment of each hind foot . 
.A. albimanus* and tarsimaculata* 
nn. Without such a band.... A. argyritarsis* 
mm. Hind feet black, mottled with whitish and with 
bands of the same color at the sutures of the 
segments. W. I . A. maculipes 
II . Abdomen without such a cluster of scales ; outstand¬ 
ing scales of the wing veins rather narrow, lanceo¬ 
late; tarsi wholly black. 
m. Deep black, thorax obscurely lined with violace¬ 
ous, especially posteriorly; head, abdomen and 
legs black; no markings on the pleura; ab¬ 
domen without trace of lighter bandings; 
wing scales outstanding, uniform, not forming 
spots, though little thicker at the usual points 
indicating the spottings. Florida. . A. atropus 
*Species marked with an * are known to transmit malaria. Species found only in tropical 
North America and not known to carry malaria have been omitted from this table, but all found 
in the United States are included. 
