REPORT OF THE STATE ENTOMOLOGIST I917 I5I 



lobes stout, broadly rounded, almost truncate, the ventral plate 

 short, triangularly emarginate, the lobes narrowly rounded. The 

 ovipositor is greatly produced. 



Type C 1 i n o d i p 1 o s i s o c u 1 i p e r d a Riibs. 



Thomasia californica Felt 



1914 Felt, E. P. N. Y. Ent. Soc. Jour., 22: 132 



The female, tentatively referred to this genus, was reared August 

 27, 1 9 13 from galls on Symphoricarpos collected by Prof. E. Bethel 

 at Lake Tahoe, California. The gall consists of irregularly thickened, 

 partly tmfolded opposite leaflets, the swelling being confined mostly 

 to the basal half of the midrib. A detailed description of the female 

 is given in the above citation. 



DiCRODiPLOSis Kieff. 



1895 Kieffer, J. J. Soc. Ent. Fr. Bui., 64: 194 



1896 — ■ ■ — ■ Weill. Ent. Zeit., 15:92 



1897 ■ — ■ — • Synopse d. Cecidomyies d'Europe et d'Algerie, p. 28 



1904 — — — — — - Soc. Scien. Brux. Ann., v. 28, pt 2; separate, p. 18 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 394 



1910 Riibsaamen, E. H. Zeitsch. Wissenschaft. Insektenbiol., 15:288 



1911 Felt, E. P. N. Y. Ent. Soc. Jour., 19:53 

 1913 Kieffer, J. J. Gen. Insect., fasc. 152, p. 157 



■ We have placed in this genus for the present those Diplosids 

 having all the claws unidentate and the whorls of setae, and the 

 loops of the three circumfili in the male, symmetrical or nearly so. 

 It is possible that some or all the forms placed here are not cogeneric 

 with the type, D. fasciata Ivieff., a point which can hardly be 

 established without more extended knowledge than is at present 

 available respecting the life histories of the fonns under consideration. 



Key to Species 



Males 



a Abdomen fuscous yellowish, length 1.25 mm 



b Fifth antennal segment having the stems with a length three and 

 one-half and four and one-half times their diameters, respectively. 



Reared from a sul^globular leaf gall on poplar 



p o p u 1 i Felt, C. ai743 

 bb Fifth antennal segment having the stems with a length two and one- 

 half and three and one-half times their diameter; probably reared 



from an oak gall f u 1 v a n. sp., C. a2097a 



aa Abdomen reddish brown 



b Fifth antennal segment having the stems with a length two and three 



and one-half times their diameters, length 1.5 mm 



a n d]r o g y n e s Felt, C. 6 



