REPORT OF THE STATE ENTOMOLOGIST I917 I33 



Male. Length i mm. Antennae one-half longer than the body, 

 thickly haired, light brown; 14 segments, the fifth with stems three 

 and four times their diameters, respectively; terminal segment with 

 distal portion irregular, fusiform. Palpi; the first segment short, 

 stout, subquadrate, the second one-half longer, narrowly oval, the 

 third one-half longer than the second, more slender. Thorax and 

 abdomen mostl}^ pale yellowish, the distal segments of the abdomen 

 and genitalia variably clouded with fuscous. Wings subhyaline, 

 there being an ill-defined, broad, fuscous band more pronounced 

 on the posterior margin and near the basal fourth. The apical fourth 

 of costa, including most of the apex of the wing, is fuscous with a 

 faint shading on the adjacent membrane and a small, fuscous area 

 at the apex of the fifth vein; halteres yellowish transparent. Coxae 

 and base of femora pale yellowish, the distal portion of femora 

 dark brown; tibiae mostly pale yellowish; tarsi with two basal seg- 

 ments dark brown, the distal segment pale 3^ellowish; claws long, 

 slender, evenly curved, the pulvilli about two-thirds the length of 

 the claws. Genitalia; basal clasp segment long, broadly curved, 

 distally with a broadly rounded internal lobe; terminal clasp seg- 

 ment short, irregular, swollen basally, convolute near the middle, 

 the apex strongly recurved, the margin dentate; dorsal plate short, 

 broad, deeply and roundly emarginate, the lobes roundly truncate: 

 ventral plate short, stout, truncate. Tj^pe Cecid. 102 1. 



Group Trifili 



APHIDOLETES KiefE.^ 



1904 Kieffer, J. J. Soc. Sci. Brux. Ann., 28: 19-22 



1908 Felt, E. P. X. Y. State Mus. Bui. 124, p. 396 



1910 Rubsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:289 



191 1 Felt, E. P. N. Y. Ent. Soc. Jour., 19:53 



1912 Kieffer, J. J. Ent. Soc. Fr. Bui. 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. a b i e t i s Kieff. 



All the species of Aphidoletes presumably prey on aphids or 

 plant lice. 



^ Kieffer refers the American species placed here to Phaenobremia 



