io8 



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. iii6a, aigoS. 



Caryomsda tubicola O. S. 



1862 Osten Sacken, C. R. Mon. Dipt. N. A., 1:192 (Cecidomyia) 

 1874 Glover, Townend. Ms. Notes My Jour. Dipt., pi. 11, fig. 25 

 (Cecidomyia) 



1886 Hagen, H. A. Ent. Am., 1:229 (Cecidomyia) 



1892 Beutenmueller, William. Am. Mus. Nat. Hist. Bui., 4:267 

 (Cecidomyia) 



Am. Mus. Nat. Hist. Guide Leaflet 16, p. 27 (Cecidomyia) 

 Ohio State Univ. Bui. 8, 13:141 (Cecidomyia) 

 Dep't Geol. Nat. Res. Ind., 29th Rep't, p. 



1904 

 1904 

 1905 



Cook, M. T. 



(Cecidomyia) 

 1906 Felt, E. 



840 



P. Insects Affecting Park & Woodland Trees, N. Y, State 



Mus. Mem. 8, 2:619, 628; pi. i, fig. 10 (Cecidomyia) 



1908 N. Y. State Mus. Bui. 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. Bui. 2, p. 14 (Hormomyia) 

 1918 Felt, E. P. N. Y. State Mus. Bui. 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 

 Jime 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 

 under stu"face by a pale yel- 

 lowish color surrounded by 

 a reddish, spongy growth 

 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 



Fig. 13 Caryomyia tubicola, group of 

 galls on underside of leaf and several 

 stages shown below in profile (author's 

 illustration) 



