DESCRIPTIONS OF NEW (^YNIPIDOUS GALLS AND CxALL- 

 WASPS IN THE UNITED STATES NATIONAL MUSEUM. 



l>y William II. Ashmead, 



Eonoravy CnstodUin of Uymenoptera. 



The present paper represents part of a report i)repared several years 

 aiio entitled "Report upon the Cynipidous Galls and Gall- Wasps in the 

 United States National Museum." 



The mauuscript of same was handed to the late Dr. 0. V. Riley for 

 publication in the Proceedings of the National Museum, but for various 

 reasons it was never submitted by him for publication, and has only 

 been returned to me since his death. 



During- the time the manuscript was in his hands two other Amer- 

 ican students of the CynipidiC, Mr. Homer F. Bassett, of Waterbury, 

 Connecticut, and Prof. C. P. Gillette, of Fort Collins, Colorado, have 

 published descriptive papers upon the family, and I now find many of 

 the species, first described in my manuscript, are preoccupied by these 

 authors. 



The following forty-three gall making species are, however, so far as 

 I know, still undescribed, and may be recognized from the following 

 descrii)tions: 



Genus TRIGONASPIS, Hartig. 



1. TRIGONASPIS RADICIS, new species. 



Gall. — An irregularly rounded, rugose, Heshy gall, occurring in clus- 

 ters on the roots of an unknown oak in Utah. 



The color of the dried specimen is now brown, although a label says: 

 "Large, soft, white galls, purple on toj)." They measure 1 cm. in 

 length, by mm. in diameter. 



Gallfly. — Female. Length, 4.2 mm. Head yellow; ocelli and eyes 

 black; thorax reddish piceous, varied with dark brown on mesonotum; 

 metathorax, autenn;^, middle and posterior tibiie and abdomen dark 

 brown, the latter almost black; legs reddish yellow. 



Stature similar to T. megaptera. Head minutely confluently punc- 

 tate; antennie long, filiform, pubescent, the third joint not quite twice 

 as long as the fourth, the two basal joints pale. Thorax polished with 



Proceedings U. S. National Museum, Vol. XIX— No. 1 102. 

 Proc. N. M. vol. xix 8 113 



