108 NEW YORK STATE MUSEUM 
fourteen sessile segments, the fifth with a length three and one-half 
times its diameter; circumfila near the basal third and apically; 
terminal segment slightly produced, tapering, narrowly rounded. 
Palpi; first segment rectangular, with a length twice its diameter, 
the second a little shorter, stouter, the third twice the length of the 
second, slightly expanded. Ovipositor pale yellowish, the lobes 
protuberant, with a length three times their width, tapering, nar- 
rowly rounded. Type Cecid. 1116a, a1go8. 
Caryomyia tubicola O. 5S. 
1862 Osten Sacken, C. R. Mon. Dipt. N. A., 1:192 (Cecidomyia) 
1874 Glover, Townend. Ms. Notes My Jour. Dipt., pl. 11, fig. 25 
(Cecidomyia) 
1886 Hagen, H. A. Ent. Am., 1:229 (Cecidomyia) 
1892 Beutenmueller, William. Am. Mus. Nat. Hist. Bul., 4:267 
(Cecidomyia) 
1904 ———————_ Am. Mus. Nat. Hist. Guide Leaflet 16, p. 27 (Cecidomyia) 
1904 Cook, M. T. Ohio State Univ. Bul. 8, 13:141 (Cecidomyia) 
1905 ———————_ Dep’t Geol. Nat. Res. Ind., 29th Rep’t, p. 840 
(Cecidomyia) ; 
1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State 
Mus. Mem. 8, 2:619, 628; pl. 1, fig. 10 (Cecidomyia) 
1908 ——————_ NN Y. State Mus. Bul. 124, p. 388 (Hormomyia) 
1909 Jarvis, T.D. Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 
1909 Felt, E. P. Econ. Ent. Jour., 2:293 
1910 Stebbins, F. A. Springfield Mus. Nat. Hist. Bul. 2, p. 14 (Hormomyia) 
1918 Felt, E.P. N. Y. State Mus. Bul. 200, p. 43, 47 
This rather common, characteristic gall is rarely so abundant as 
some of the other deformities occurring on hickory leaves. The 
young galls of this species, 
according to the observa- 
tions of the late Dr M. T. 
Thompson, appear in late 
June or early July as nearly 
circular, yellowish or yellow- 
ish green blisters on the 
upper surface of the leaf. 
The presence of the develop- 
ing gall is marked on the 
Fig. 13 Caryomyia tubicola, group of under surface by a pale yel- 
galls on underside of leaf and several lowish color surrounded by 
stages shown below in profile (author’s 4g reddish, spongy growth 
illustration) : 
adorned with numerous 
rather long plant hairs. The 
characteristic, partly grown galls of this species may be observed in 
early August as minute, yellowish green or even blackish nipples 

