js Bulletin 2: Springfield Museum. 



form. Common on scarlet oak, black oak, red o:ik and pin oak, Quercus 

 coccinea, Q. velutina, Q. rubra and Q. palustris. 



Cincticornia pilulae 'Walsh. Oak pill-gall. 



Cynips quercus-pilulat Walsh, Proc. Ent. soc. Phil., 1864, v. 2, p. 481-482. 

 Cecidomyia quercus-inlulae Walsh and RUey, Amer. cut.. 1869, v. -2, p. 29. 



Packard, 5th rept. U. S. ent. comm., L890, p. 206-207. 

 Cecidomyia pilulae, Beutenmiiller, Bull. Amer. mus. nat. hist., 1892, v. 4, p. 269, pi. 15, fig. 3; 

 [ns, galls vioin. N. V.. 1904, p. 30, fig. 

 ( ook, Ohio nat., 1902, v. 2. p. 267, fig. •_';;; 29th, ann. rept. Dept. geol. and 

 nat. res. Indiana 1. 1904, 1905, p. 841. 

 Cincticornia pilulae Felt, 23(3 rept. ins. N. V. 1. 1907, 1908, p. 374,381. 



A solid, rounded, irregular polythalamous gall on upper side of leaf. 

 Differs from C. symmetrica Osten Sacken in having a small green projec- 

 tion on under side of leaf instead of being same above and below. 

 Frequently several coalesce. Brown becoming reddish. Surface much 

 cracked, later the covering bursting and standing up ragged and irregular. 

 Common on several species of red oak group. Matures in September. 



Amphibolips coelebs Osten Sacken. Oak spindle-gall. Fig. 26-29. 



Cynips quercus-coelebs Osten Sacken, Proc. Ent. soc. Phil., 1861, v. 1. p, 60-61; 1865, v. 4, p. 340. 

 Amphibolips coelebs Packard, 5th rept. I'. S. ent. comm., 1890, p 105. 



Beutentn tiller, Ins. galls vicin. N. V., 1904, p. 1-2. tin-. 

 A smooth, spindle-shaped gall, attached to the midrib or to a large 

 vein, sometimes very little of the leaf developed, Stem long, the gall 

 tapering very gradually, especially at the base, tip pointed. Light brown. 

 3-4 cm. long, 4-15 mm. wide. Monothalamous, thin-walled, the larval cell 

 supported mainly by longitudinal fibers, a few radiating transverse fibers. 

 On red oak, Quercus rubra, and on scarlet oak, Q. coccinea. Not rare. 



Amphibolips confluentus Harris. 0:dv apple. 



Cynips confluentus Harris, Kept. ins. Mass. inj. veg., 1841, p. 397; Treat, ins. N. !•'. inj. veg., 



1842, p. 397. 

 Cynips confluens Harris, Treat, ms. N. E. inj. veg., 1852, p. 433; Treat, ins. inj. veg. (Flint ed.), 



1862, p. .">!<;. 

 Cynips quercus-spongiflca Osten Sacken, Proc. Ent. soc. Phil., 1862, y. l, p. 244-249; L865, \ . 4, p. 



340-341, 354. 

 Walsh, Proc. Ent. soc. Phil., 1864, v. 2, p. 443-500, ti#. 

 Walsh and Riley, Amer. ent., 1869, v. 1, p. 103, fitf. 78. 

 Walsh, Amer. ent. and hotan., 1870, v. •-', p. 330-335, titf. :>. 

 Cynips quercus-aciculata Osten Sacken, Proc. Ent. soc. Phil., 1862, v. 1, p. 56-57 note, 245; 1865, 



v. 4, p. 345. 

 Cynips quercus-coccineae Osten Sacken, Proc. Ent. soc. Phil., 1862, v. I, p. 243, 248. 

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



Packard, .">th rept. V . S. ent. connn., 1890, p. Int. 

 Imphibolips spongiflca Ashmead, Trans. Amer. ent. soc. 1885, v. 12, p. 294; Psyche, 1903, v. Id, 

 p. 154. 

 Gillette, Psyche, 1889, v. 5, p. 1st. 

 Amphibolips confluentus Beutenmiiller, Bull. Amer. mus. nat. hist., 1892, v. 4, p. 250, pi. 10, fig. 4. 

 Cook. ( >hio nat., 1904, v. I, p. 119, 126, 131, 111. fig. in.-). 121. 



A globular gull found attached to leaf by small portion. Monothala- 

 mous; larval cell surrounded by brown spongy mass, and that by :i rather 

 smooth thickened wall. Pale green and SOi't while fresh, turning brown 

 and brittle. 2-1 cm. in diameter. Common on Mack, red and scarlet 

 oaks, Quercus velutiva, (J. rubra :ind (J. cot-duett. Begins growth about 



