Insect Galls. 

 Amphibolips ilicifoliae Bassett. Scrub-oak gall. 



Cynips quercus-ilicifoliae Bassett, Proc. Ent. soc. Phil., 1864, v. 3, i>. <;si 6s-j. 

 Cynips ilicifoliae Osten Sacken, Proc. Ent. soc Phil., L865, \ . 4. p. 340, 3.5.4 

 Amphibolips ilicifoliae Ashmead, Trans. Amer. ent. soc, 1885, v. 12, p. 294! 



Packard, 5th rept. I*. S, ent. comm., 1890, p. 105. 



Beutenmuller, Bull. Amer. mus. nat. hist., 1892, v. 4, i>. 252, pi. n». li- 6 



((ink, Ohio nat.. 1904, v. 4, p. 14"2. 



A rather rough fusiform gall, tapering at either end, especially at tip. 

 Thin-walled, the larval chamber in the center, held in place by radiating 

 fibers. About 40 mm. long, half as broad in broadest part. Light green 

 changing to light brown in autumn. Very common on leaves of scrub oak, 

 Quercus nana. 



Amj)hibolips prunus W alsh. Seep. 19. 



Andricus jlocci Walsh. Oak wool-gall. Fig. 46. 



Cynips quercus-flocci Walsh, Proc. Ent. soc. Phil., 1864, v. •_», p. 482-483, 

 Andricus flocci Gillette, Psyche, 188!), v. 5, p. 185-186, 221. 



The following references are to Syivergus lama Fitch, an inquiline in the Kail made by 

 Andricus flocci, but the gall should he designated by the name of its maker. 

 Cynips quercus-lana Fitch, 5th rept. ins. N. Y. for 1858, 1859, p. 814. 



Osten Sacken, Proc. Ent. soc. Phil., 1865, v. 4, p. 359. 

 Andricus lain/ Ashmead, Trans. Amer. ent. soc., 1885, v. 12, p. 295. 



Packard, 5th rept. U. S. ent. comm., 1890, p. ]<)d. 



Beutenmuller, Bull. Amer. mus. nat. hist., 18U2, v. 4, p. 257, pi. 11, fig. 5. 



Jarvis, 37th aim. rept. Ent. soc. Ontario, 1906, p. 71, pi. D, fig. 1. 

 Synergus lana Cresson, Trans. Amer. ent. soc, 1887, v. 14, suppl., p. 180. 



Numerous small seed-like galls grouped on a large vein of the leaf, 

 covered with a woolly white or a light brown mass. About 15 mm. long. 

 On the under side of leaves of white oak, (Juercus alba, and scrub oak, 

 Q. nana. Common. 



Amlricus imbricariae Ashmead. 



Andricus imbricariae Ashmead, Proc. U. S. nat. mus., \8'.W>, v. 19, p. 122. 



"A brownish, hard, globular gall, from 7 to 10 mm. in diameter, 

 issuing, usually several together, from a fissure in a twig of Quercus 

 imbricaria and Q. nana. The larval cell is nearly always closely cemented 

 to the thick, hard, outer rind, but in a single instance there are a few fibers 

 separating it." "Reared Sept. and Oct." Found here on scrub oak, Q. 

 nana. 

 Andricus ventricosus Bassett. Fig. 49-50. 



('//n/jix quercus-ventricosa Bassett, Proc. Ent. soc. Phil., 1S64, v. 3, p. 681. 



Packard, 5th rept. U. S. ent.comm., 1890, p. 114. (Op. cit., p. in,"), as 

 Andricus ventricosus.) 



Conical, rough, woody galls, the point sometimes prolonged into a 

 recurved tip. In clusters, sometimes a dozen about the twig. When 

 closely pressed together the shape is somewhat changed. 7-12 mm. long, 

 3-7 mm. wide. Slightly pubescent. Deep red, becoming nearly black. 

 One free, larval cell at the base. Galls collected in June, insect developed 

 in October but does not emerge until spring. On scrub oak, Quercus nana. 



Cdllirhytis operator Osten Sacken. Fig. 47-48. 



Cynips quercus-operator Osten Sacken, Proc. Ent. soc. Phil., 1862, v. 1, p. 256-257; 1865, v. 4, p, 

 341, 357. 



