Inskct Galls. • 13 



Dactylosphaera spinesum Shinier, op. tit., p. 397. 

 Dactylosphaera subellipticum Shinier, op. tit., p. 389. 



Phylloxera caryaecaulis Walsh and Riley, Amer. ent., 1869, v. 1, p. 227. 

 Riley, 7th rept. ins. Mo., 1875, p. 117. 

 Cook, Ohio nut., 1903, v. 3, p. 421, 425; 29th ami. rept. Dept, geol. 



and nat. res. Indiana f. 1904, 1905, p. 854, lis- -15. 

 Pergande, Proc. Davenport acad. sci., 1904, v. 9, p. 244-247, tig. 40-44 

 106 114, 124-127. 



Hemispherical gall of varying size on stem, petiole or ribs of leaves. 

 Hollow, filled with lice. Bursts open becoming cup-shaped. Tough. 

 May and June. Common on hickories, Hicoria. 



Phylloxera globuli Walsh. 



Phylloxera caryae-globuK Walsh, Proc. Ent. soc. Phil., 1862, v. 1, p. 309; 1867, v. 6. p.275- 

 Riley, 7th rept. Ins. Mo., 1*75, p. 117. 

 Packard, 5th rept. U. S. ent. comm , 1890, p. 322. 

 Cook, Ohio nat., 1902, v. 2, p. 266, tig. 18; 1903, v. 3, p. 425, fig. 

 63: 29th ann. rept. Dept. geol. and nat. res. Indiana f. 

 1904, 1905, p. 852. 

 Pergande, Proc. Davenport acad. sci-, 1904, v. 9, p. 222-225. 

 Dactylosphaera hemisphericum Shinier, Trans. Amer. ent. soc, 1869, v. 2, p. 387 388. 



A hemispherical gall on upper side of leaf, opening by a slit on the 

 under side. 5-7 mm. in diameter. Green becoming black. On hickories, 

 Hicoria. 



Cecidomyia caryai-cola Osten Sacken. Hickory seed-gall. Fig. 13. 



Cetidomyia caryaecola Osten Sacken, in Loew's Mon. dipt. N. A., 1S62, pt. 1, p. 192 



Beutenmiiller, Bull. Amer. mus. nat. hist., 1892, v. 4, p. 266, pi. 

 14, fig. 2. 



Smooth, elongated gall, somewhat conical, apex prolonged into a point, 

 which is frequently curved. Monothalamous, 7-9 mm. long, 3-4 mm. wide. 

 Green becoming brown in fall. Common separately, or mixed with other 

 galls, in large numbers on under side of leaves of hickories, Hicoria. 



Cecidomyia per sico ides Osten Sacken. Hickory peach-gall. 



Cecidomyia persicoides Osten Sacken, in Loew's Mon. dipt. N. A., 1862, pt. 1, p. 193. 



Beutenmiiller, Bull. Amer. mus. nat. hist., 1892, v. 4', p. 267, pi. 14, 

 fig. 3; 1907, v. 23, p 393, pi. 17, fig. 10. 



Rounded, irregular galls on under side of leaf. Variable both in shape 

 and size. Covered with a very fine down. One medium sized one about 

 5 mm. in diameter. Monothalamous. Light brown when mature. Not 

 as abundant as other species of cecidomyid galls on hickories. On hick- 

 ories, Hicoria. August. 



Cecidomyia sanguinolenta Osten Sacken. Hickory cone-gall. 



Cecidomyia sanguinolenta Osten Sacken, in Loew's Mon. dipt. N. A., 1862, pt. l,p 192. 

 Beutenmiiller, Ins. galls vicin. N. Y., 1904, p. 28, fig. 



Conical gall, narrowed at the base. About 4 mm. high, 3 mm. wide. 

 Red or violet. Monothalamous. Found in July. Common on under 

 side of leaves of hickories, Hicoria. 



Hormomyia holotricJia Osten Sacken. Hickory onion-gall. 



Cecidomyia holotricha Osten Sacken, in Loew's Mon. dipt. N. A.. 1862, pt. 1, p. 193. 



Beutenmiiller, Bull. Amer. mus. nat. hist., 1892, v. 4, p. 266, pi. 14. fig. 1 : 



Ins. galls vicin. X. V., 1904, Separate, p. 26-27, fig. 

 Cook, Ohio nat., 1904, v. 4, p. 140-141, fig. 116; 29th ann. rept, Dept. geol. 

 and nat. res. Indian:! t. 1904, 1905, p. 840. 

 Hormomyia holotricha Felt, 23d rept. ins. X. Y. t. 1907, 1908, p. 382, 389. 



