28 Bulletin 2: Springfield Museum. 



Beutenmuller, Bull. Amer. urns. nat. hist., 1892, v. 4, p. 254; 



1,1. 11, fig. 1. 

 Jarvis, 38th ann. rept. Ent. soc. Ontario, 1907, p. 89-90, pi. I'., fig. 4. 

 Callirhytisfutilis Bassett, Psyche, 1889, v. 5, p. 235-238. 



Rounded, projecting on both sides of the leaf. Thin-walled. Two 

 or more larval cells held in center by radiating fibers. Light green. 

 About 7 mm. in diameter. Very common on white oak, Que reus alba. 

 Insects emerge in June. 



Oallirkytis seminator Harris. Oak seed-gall. 



Cynips seminator Harris. Rept. ins. Mass. inj. veg., 1841, p. 399; Treat, ins. X. E. inj. veg., 1842, 

 ]>. 399; same, 1852, p. 484; Treat, ins. inj. veg. (Flint ed.), 1862, p. 548. 

 Fitch, 5th rept. ins. X. Y. tor 1858, 1859, p. 813. 



Osten Sacken, Proc. Ent. soc. Phil., 1861, v. 1, p. 69; 1865, v. 4, p. 339,351. 

 Walsh and Riley, Amer. ent., 1869, v. 1, p. 250, fig. 1ST; 1870, v. 2, p. 71, fig. 45. 

 Andricus seminator < >sten Sacken, Proc. Ent. soc. Phil., 1m;.".. v. 4, p. 379. 



Cook, Ohio nat., 1903, v. 3. p. 420, liar. :i;>-:V\; 19114, v. 4, p. 144, fig. 131. 

 Andricus (CaUirhytis} seminator Bassett, Amer. nat., 1882, v. 16, p. '_»16. 



Ashinead, Trans. Amer. nit. soc, 1885, v. 12. p. 294. 

 Packard, 5th rept 0". S. cut. eomm., 1890, p. 105, 112. 

 Gillette, Psyche, 1889, v. 5, p. 185. 

 Callirhytis seminator Beutenmuller, Psyche, L908, v. 15, p. 10. 



These small seed-like monothal anions galls are massed together on the 

 twig and covered with fibers forming a mass 15-45 mm. in diameter. 

 White dotted with red when young, turning brown in the fall. On white 

 oak, Quercus alba. Common. Insect in early summer. 



Cynips sirobilana Osten Sacken. Pine-cone oak-gall. 



Cynips quercus-strobilana Osten Sacken, Proc. Ent. soc. Phil., 1862, v. 1, p. 254. 

 Cynips strobilana Beutemniiller, Ins. galls vicin. X. Y.. 1904, p. 18, tiij. 33. 



A cluster of monothalamous galls so crowded together as to become 

 pointed below, forming a subglobular mass, about a common center on the 

 twig. Woody, corky within. Brown. Rare. On white oak, Quercus 

 alba. Reported from Q. platanoides. September. 



Aeraspis pezomaehoides Osten Sacken. Oak pea-gall. 



Cynips pezomaehoides Osten Sacken, I'roc. Ent. soc. Phil., 1862, v. 1. p. 250; 1865, v. 4. p. 352. 

 Acraspis pezomaehoides Ashmead, Trails. Amer. ent. soc-.. 1885, v. 12. p. 303. 

 Cynips pi sum Fitch is a guest-fly of Acraspis pezomaehoides, and Fitch described the gall 

 under the name of the guest-fly: 5th rept. ins. N. Y. tor ls5s. 1859, p. sis. 

 To this the follow ing references may be added : 

 Osten Sacken, Proc. Ent. soc. Phil., 1861, v. 1, p. 59; 1865, v 4. p 352. 

 Beutenmuller, Bull. Amer. mus nat. hist., 1892, v. 4, p. 258-259; [ns. galls vio. 



X. Y.. 1904, p. 18. fig. 

 ( look, 29th ann. rept. Dept. geol. and nat. res. [ndiana f. 19H4, I9(i5. p. 840. 

 Spherical gall with rough or netted surface, with slight elevations. 

 Usually two-celled, sometimes as many :is six or even eight cells (Ash- 

 mead). From 3 to mm. in diameter. Green becoming light brown. 

 Easily separated from the leaf. Common on under, sometimes on upper, 

 side of leaf of white oak. Quercus alba. 



Xanthoteras forticornis Walsh. Oak fig-gall. 



Cynips quercus- forticornis Walsh, Proc. lint . soc. Phil.. 1864, v. 2, p. 490. 



Cynips forticornis Walsh and Riley, Amer, ent., 1869, \. 1. p. 251. 



Teras forticornis Osten Sacken, I'roc. Ent. soc. Phil., 1865, v. i, p. 879. 



Cynips quercua-ficus Packard (not Fitch), Packard. 5th rept. U. S. ent. comm., 1890, p. ill. 



