32 Bulletin 2: Springfield Museum. 



A rough, globular gall on the upper side of the leaf. Hard, woody, 

 one-celled. Green with red tint, becoming brown. About 1 cm. in 

 diameter. On dwarf chestnut oak, Quercus prinoides. 



Holcaspis rugosa Bassett. Fig. 56. 



Cynips rugosa Bassett, Can. ent., 1881, v. 13, p. 100. 

 ffolcaspis rti<i<,s<! Gillette, Psyche, 1889, v. 5. p. 1ST. 



Round, somewhat roughened, woody galls on branch of dwarf chestnut 

 oak, Quercus ■prinoides. Frequently several are so crowded as to lose the 

 spherical shape. Green with red side when young, turning brown. Free 

 larval cell surrounded by brown hard-spongy mass. Diameler about 10- 

 12 mm. Insects emerge in the fall. 



URT WALES. 



ULMACEAE. 



Ulmus americana. 



Eriophyes ulmi Garman. Elm mite-gall. Fig. 61. 



Phytoptus ulmi Garman, 12th rept state ent. 111., 1883, p. 136. 



Packard, 5th rept. V. S. cut. comm, 1890, p. 281-282, 



Cook, Ohio nat., 1902, v. 2, fig. 8; 1901, v. 4, p. 117. 

 Eriophyes ulmi Cook, 29th ann. rept. Dept. geol. and nat. res. Indiana f. loot, 1905, p. 861. 



Jarvis, 37th ann. rept. Ent. soc. Ontario, 1906, p. 59, pi. B, tig. 5. 



A small globular gall on the upper surface of the leaf. The neck 

 constricted somewhat. Not common. On elm, Ulmus americana. 



Schizoneura americana Riley. P^lm-leaf louse-gall. 



Schizoneura americana Riley, Bull. 17. s. geol. and geog. surv. terr., 1879, v. 5, p. 4-9, pi. 1, tig. 1. 



Oestlund, Bull. 4, Geol. and nat hist. surv. Minn., 1887, p. 27. 



Packard, 5th rept. U. S. ent. comm., 1890, p. 279. 



Cook, 29th ann. rept. Dept, geol. and nat. res. Indiana (. 1904, 1905. p. 851. 



Houard, Les Zoocecidies des plantes d'Europe, 1908, p. 364. 

 A gall which is simply a wrinkling and rolling of the leaf, caused by 

 the attacks of the insects on the under side of the leaf. White elm, 

 Ulmus americana. Common. 

 Colopha ulmicola Fitch. Cock's-comb elm-gall. 



Byrsocrypta ulmicola Fitch, 5th rept. ins. N. V. fur 1858, 1859, p. 843. 

 Thelaxes ulmicola Walsh, Proc. Ent. soc. Phil., 1862, v. 1, p. 305. 



Walsh and Riley, Amer. ent., 1869, v. 1, p. 108-109, fig. 90. 

 Pemphigus ulmicola Packard, Guide .study ins., 1869, p. 524. fig. 525. 

 Colopha ulmicola Monell, Can. ent., 1877, v. 9, p. 102-103. 



Riley, Bull. U. 8. geol. and geog. surv. terr., 1879, v. 5, p. 9-13, pi. 1, fig. 2. 



Cook, Ohio nat., L902, v. 2, p. 265, fig. 13; 1903. v. 3, p. 425, fig. 50: 1904. p. lis. 

 125, 130. 



Beutenmuller, Ins. galls vicin. N. Y., 1904, p. 37, fig. 

 Jarvis, 37th aim. rept. Ent. soc. Ontario, loot;, p. 03-64, pi. 0, fig. 5. 

 Glyphina ulmicola Thomas, Trans. Dept. agr.Ill., f. 1878, 1879, n. s., v. 8 (Thomas, 3d rept. 



ins. 111.), p. 142. 



This gall consists of a cock's-comb-shaped pouch on the upper side of 

 the leaf of white elm, Ulmus americana. Early summer. Common. 

 Undetermined gall. 



A monothalamous, subglobular gall at union of blade and petiole. 

 Rough, rather thick-walled, brown. About 7 mm. in diameter. One 

 specimen. On elm, Ulmus americana. 



