NOTES ON CYNIPID WASPS, WITH DESCRIPTIONS OF 

 NEW NORTH AMERICAN SPECIES. 



By Lewis H. Weld, 

 Of the Bureau of Entomology, United States Department of Agriculture. 



The present paper contains some miscellaneous notes on several 

 species of both parasitic and gall-inhabiting Cynipidae, including 

 some on synonymy and some generic transfers made as the result of a 

 study of the Bassett and Osten Sacken types in the light of the Dalla 

 Torre and Kieffer Monograph of 1910 ^ and a study of the genotypes 

 of the Ashmeadean genera. 



In the course of a visit to Philadelphia and Cambridge in May, 

 1921, the writer saw several species belonging in the genus CaUirhytis 

 and related to certain species reared from acorn galls on which he 

 was preparing another paper. An attempt was made to bring these 

 related species all together in a key, and where sufficient material and 

 biological data was available a few new species in this section of the 

 genus are here described preliminary to a later paper. 



The American fauna is peculiar in having several genera of apter- 

 ous and subapterous forms which are no doubt the agamic genera- 

 tions of other genera. Few life histories have been worked out, how- 

 ever, and for the present it seems best to group these species as best 

 we can into these genera. From a study of the genotypes two of these 

 genera are here synonymized. On the other hand, two others, long 

 united in literature, are here recognized as valid after a study of all 

 the species in the light of a reexamination of the genotypes. This 

 separation received biological confirmation in the fact that the galls 

 of the two genera are of quite different types Tentative keys are 

 given for the determination of the adults and a new species is de- 

 scribed in each genus. Whether these generic names will continue to 

 be applied to these species groups when the life history and alter- 

 nating generation of each species is known is not of present concern. 



The paper is prepared under the general direction of Mr. S. A. 

 Rohwer, custodian of Hymenoptera in the United States National 

 Museum, where types of the five new species are deposited, 



1 Dalla Torre and Kieffer, Das Tierrcich, Lief. 24, 1910. 



No. 2439 Proceedings U. S. National Museum, Vol. 61. Art. 18. 



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