I20 NEW YORK STATE MUSEUM 



Contarinia coloradensis Felt 



1912 Felt, E. P. N. Y. Ent. vSoc. Jour. 20:240-41 



This species produces a large, budlike deformity on P i n u s 

 scopulorum, although Dicrodiplosis gillettei Felt, 

 .probably Zoophagous, was reared from this gall. The work of 

 this insect appears to be common in Colorado since it has been 

 repeatedly received from several correspondents. 



THECODIPLOSIS Kiefif. 



1895 Elieffer, J. J. Soc. Ent. Fr., Bui. 64, p. 194 



1896 Wien. Ent. Zeit., 15:94, 100 



1897 Syn. Cecid. de Eur. & Alg., p. 35 



1910 Riibsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:285 



191 1 Felt, E. P. N. Y. Ent. Soc. Jour,, 19:51 



1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 184 



This genus may be distinguished from Contarinia by costa not 

 being interrupted at its union with the third vein, and by the long, 

 broadly lobed dorsal and ventral plates, in connection with the 

 stout, usually not very long ovipositor of the female. The type 

 species is Cecidomyia brachyntera Schw. 



The fifth antennal segment of the male is binodose, the distal 

 enlargement with a length a little greater than the diameter, each 

 with well-developed circumfili, the loops being rather sparse and 

 moderately long. Palpi quadriarticulate, the third and fourth 

 segments subequal. Subcosta unites with costa at the basal third, 

 the third vein at the apex, the fifth at the distal third, its branch 

 just before the basal half. Basal clasp segment stout, the terminal 

 clasp segment greatly swollen basally; dorsal plate short, broadly 

 emarginate, the lobes broadly rounded; ventral plate triangularly 

 emarginate, the lobes divergent, hardly tapering, broadly rounded, 

 setose; style short. The above characters were drafted from speci- 

 mens determined by Dr J. J. Kieffer and generously donated to the 

 Museum. 



Several American species have been referred to this genus. 

 Thecodiplosis ananassa Riley produces a gall on cypress 

 twigs, while T. liriodendri O. S. inhabits a circular, somewhat 

 convex blister mine on the leaf of the tulip, Liriodendron 

 tulipiferae. 



Key to Species 



a Small species usually yellowish and with very few or no fuscous markings 



b Fifth antennal segment having the basal portion of the stem with a length 

 at least three times its diameter 



