14 Bulletin 2: Springfield Museum. 



Subglobular, rnonothalamous galls, 3-5 mm. in diameter, covered 

 with pale hairs when young which become rusty brown when the gall is 

 mature. Very abundant on under side of leaves of different hickories, 

 Hicoria. Sometimes so massed as entirely to cover the leaf. Sometimes 

 with other galls. Larvae fully grown in October. 

 Hormomyia tubicola Osten Sacken. Hickory tube-gall. 



Cecidomyia tubicola Osten Sacken, in Loew's Mon. dipt. N. A., 1862, pt. 1, p. L92. 



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



Ins. galls vicin. X. Y., 1904, p. 27, tig. 

 Cook, Ohio nat., 1904, v. 4, p. 141, titf. 117; 29th ami. rept. Dept. geol. and 

 nat. res. Indiana f. 1904, 1905, p. 840. 

 Hormomyia tubicola Kelt, 23d rept. ins. N. Y. f. 1907, 1908, p. 382, 3X8, pi. 37, lig. 5. 



Slender, cylindrical galls inserted in a saucer-like base from which 

 they fall very easily. About 5 mm. long, 1 mm. wide. Green when 

 young, becoming brown or almost black at the tip when mature. In 

 October each contains one very light, full-grown larva, Usually in 

 clusters on leaves of different hickories, Hicoria. Common. Galls fall 

 to the ground where the insects mature. 



Hicoria ovata. 

 Hormomyia caryae Osten Sacken. 



Diplosis caryae Osten Saeken, in Loew's Mon. dipt. N. A., 1862, pt. 1. p. 191. 



Jarvis, 37th aim. rept. Ent. SOC. Ontario, 1906, p. 67. 

 Hormomyia caryae Felt, 23d rept. ins. N. Y. f. 1907, 1908, p. 382, 388. 



Smooth, globular, monothalmous, seed-like gall, with a small point at 

 apex. 2-4 mm. in diameter. In summer green and soft, in winter brown 

 and woody. Those collected in October contained full-grown larvae. 

 Fly emerges in April. Common on leaves of shell-bark hickory, Hicoria 

 orata . 



Hicoria alba. 



Phylloxera fallax Riley. 



Phylloxera caryae-fallax Riley, 7th rept. ins. Mo., 1875, p. lis. 



Packard, 5th rept. I*. S. ent. comm., 1890, p. 323. 



Cook, Ohio nat., 1902, v. 2. p. 266, fig. 17; 1903, v. 3, p. 425, tiff. 51-52; 29th 

 ann. rept. Dept. geol. and nat. res. Indiana f. 1904, 1905, p. 

 852-853, fig. 44. 

 Pergande, Proc. Davenport acad. sci., 1904, v. 9, p. 214-216, fig. 52-53, 



71-74. 

 Jarvis, 37th ann. rept. Ent. soc. Ontario, 1906, p. 64, pi. C, tin'. 4. 



Conical gall on upper side of leaf, opening on under side of leaf by a 

 much shorter cone. About 5 mm. above. Very abundant on white-heart 

 hickory, Hicoria alba. 



Phylloxera caryaevevae Fitch. 



Pemphigust caryaevenae Fitch, 3d rept. ins. N. v., 1856, p. 126. 



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



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



Pergande, Proc. Davenport acad. sci., 1904, v. 9, p. 239-243, fig, 88-39, 



'.is. 1(15. 

 Cook, 29th aim. rept. Dept. geol. and nat. res. Indiana 1. 1904, 1905, 



p. 852. 

 Jarvis, 37th ann. rept. Kid. soc. Ontario, L906, p. 64. 



