REPORT OF THE STATE ENTOMOLOGIST 1917 133 
Male. Length 1 mm. Antennae one-half longer than the body, 
hickly haired, light brown; 14 segments, the fifth with stems three 
nd four times their diameters, respectively; terminal segment with 
istal portion irregular, fusiform. Palpi; the first segment short, 
tout, subquadrate, the second one-half longer, narrowly oval, the 
hird one-half longer than the second, more slender. Thorax and 
bdomen mostly pale yellowish, the distal segments of the abdomen 
nd genitalia variably clouded with fuscous. Wings subhyaline, 
here being an ill-defined, broad, fuscous band more pronounced 
m the posterior margin and near the basal fourth. The apical fourth 
£ costa, including most of the apex of the wing, is fuscous with a 
aint shading on the adjacent membrane and a small, fuscous area 
t the apex of the fifth vein; halteres yellowish transparent. Coxae 
ind base of femora pale yellowish, the distal portion of femora 
lark brown; tibiae mostly pale yellowish; tarsi with two basal seg- 
nents dark brown, the distal segment pale yellowish; claws long, 
lender, evenly curved, the pulvilli about two-thirds the length of 
he claws. Genitalia; basal clasp segment long, broadly curved, 
listally with a broadly rounded internal lobe; terminal clasp seg- 
nent short, irregular, swollen basally, convolute near the middle, 
he apex strongly recurved, the margin dentate; dorsal plate short, 
ysroad, deeply and roundly emarginate, the lobes roundly truncate; 
ventral plate short, stout, truncate. Type Cecid. 1021. 
Group Trifila 
APHIDOLETES Kieff. 
1904 Kieffer, J. J. Soc. Sci. Brux. Ann., 28:19~-22 
1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 396 
1910 Ribsaamen, E.H. Zeitsch. Wissenschaft. Insektenbiol., 15:289 
1911 Felt, E.P. N. Y. Ent. Soc. Jour., 19:53 
1912 Kieffer, J. J. Ent. Soc. Fr. Bul. 6, p. 137-38 
1913 =—— Gen. Insect., fasc. 152, p- 163 
The genus presents a superficial resemblance to Bremia Rond, 
though it is easily distinguished by structural and biological differ- 
ences. Aphidoletes and Bremia both have the setae and circumfili 
of the male antennae greatly produced on the dorsal face of the 
segments. This genus is easily separated in the male from Bremia 
by the three well-developed circumfili (figure 47) on the flagellate 
antennal segments; and by the pulvilli being long, usually over 
one-half the length of the claw. The ventral plate in the male is 
expanded distally and the anterior and midclaws are strongly 
unidentate; the posterior claws are simple. The wing is shown 
on plate 7, figure 4. The type of the genus is A. abietis Kieff. 
All the species of Aphidoletes presumably prey on aphids or 
plant lice. 

1 Kieffer refers the American species placed here to Phaenobremia 
