298 [December 



APHIS Linn. (Figs. I, & II.) 



Aphis avense Fabr. (Wheat, rye, oats and barley.) Rural New York- 

 er, Aug. 17, 1861 and July 12, 1862, with figures and description from 

 Curtis. Cyrus Thomas of South Illinois, in Illinois Prairie Farmer, Jan. 

 18, 1862. Dr. Fitch's Address to N. Y. Agricultural Society, 1862, re- 

 printed in Prairie Farmer, Nov. 8, 1862. — A. mali Fabr. (apple) Fitch, 

 N. Y. Reports Inj. Insects, Vol. I. p. 54. — A. mallfoUse Fitch, (apple) 

 ^bid. p. 56. — A. lirunifolise, Fitch, (plum) ibid. p. 123. — A. cerasi Fabr. 

 (cherry) ibid. p. 125. — A. ccrasifolise Fitch, (choke-cherry) ibid. p. 131. 

 — A. ceraxicohns Fitch, (wild cherry) N. Y. Catal. Homopt. p. 65. — A. 

 maidis Fitch, (maize) N. Y. Reports, I, p. 318. — A.pcrsicse Sulzer (peach) 

 ibid. II, §63. — A. rihls Linn, (currant) ibid. §115. — A. herheruUs Fitch, 

 (berberry) N. Y. Cat. Hom. p. 65, winged insect unknown. — ^4. hrassicse. 

 Linn, (cabbage) ibid. — A. asclepiadis Fitch, (silk-weed) ibid. — A. corni- 

 folise Fitch, (Cornus paniculata) ibid., winged insect unknown. — A. cratse- 

 fjlfoUse Fitch, (Crataegus punctata) ibid. p. 66. — A. hetulsecolcns Fitch, 

 (birch) ibid. — A. aceris Linn. (Acer pensylvanicum) ibid. — A. samhuci- 

 folise Fitch, (elder) ibid. — .4. j^lnlcolem Fitch, (pine) ibid. — A. popull- 

 folise, Fitch, (Populusgrandidentata) ibid. — ^4. rudbcckise Fitch, (Rudbeck- 

 ia laciniata and Solidago serotina and S. gigantea) ibid. — A. rosse Auct? 

 (rose-bushes) Harris, Inj. Ins. p. 190. — ^4. salicti Harris, (willow) ibid. 

 p. 191. 23 species. 



Aphis quercifoliae n. sp. — Oak-leaves. Larva pale greenish. Incisures of the 

 antennffi dusky. Upper surface of body, except the scutel, dusky. Honey-tubes 

 long, robust, dusky at tijj. Legs long, with the terminal i of femora, the extreme 

 tips of the tibiae, and the tarsi, obfuscated. Imago, blackish ; prothorax and ante- 

 rior part of thorax sometimes varied witli greenish; scuteflum pale greenish. 

 Honey-tubes two-thirds as long as the femora. Legs very long; basal i of femora 

 pale greenish. Wings hyaline; veins brown, third discoidal vein hyaline at its 

 origin; stigma and subcostal veins pale yellowish-brown; extreme tip of the front 

 wings slightly fumose. Length to tip of wings scarcely .2 inch. 



One larva, two imagos, one of which was taken in company with the 

 larva. The antennae attain the extreme tips of the wings when the wings 

 are expanded, and the stigma is four times as long as wide, and very acute 

 at each end. 



Aphis rudbeokiae? Fitch. — Silphium perfoliatum and Cirsium ? From re- 

 cent specimens. Red, fading to reddish-fuscous. Autennpe black, linear, joints 

 rather indistinct, base of joint 8 more or less yellowish. Honey-tubes black, two- 

 thirds as long as femora; anal style yellowish, more than half as long as honey- 

 tubes, ensiform. Legs long, black, the basal half of femora yellowish-hyaline 

 Wings hyaline, costa very pale yellowish-brown, stigma pale fuscous-brown; veins 

 brown, costals pale yellowish-brown. Length to tip of wings % .20 9 -21 inch. 



