REVISION OF THE PARASITIC HYMENOPTEROUS INSECTS 

 OF THE GENUS APHYCUS MAYR, WITH NOTICE OF SOME 

 RELATED GENERA. 



By P. H. TlMBERLAKE, 



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



The genus ApJiycus was erected by Gustav Mayr early in 1876 in 

 "Die europaischen Encyrtiden" with three species, of which Aphycus 

 apicalis (Dalman) was selected by Ashmead in 1900 as the genotype. 

 As treated in the present paper, most of the species of the genus 

 Aphycus are more similar to Aphycus punctipes (Dalman), the third 

 species listed by Mayr, but are also congeneric with A. apicalis as 

 far as can be made out from descriptions and the limited material 

 of the latter at hand. 



Since the publication of Mayr's paper thirty-nine species have 

 been described under this genus or later referred to it. Three of 

 these, however, were removed later by Howard and Ashmead to other 

 genera, A. chrysopae falling in the genus Isodromus Howard, A. niger 

 forming the type of Holcencyrtus Ashmead, and A. unicolor being 

 placed in PJiaenodiscus Foerster. It is apparent, nevertheless, even 

 after the removal of these species, that the genus in its present state 

 contains several discordant elements. Chief among these are three 

 Ectromine species described by Howard, namely A. dactylopii, A. 

 nigritus, and A. towns endi, all of which fall naturally in the genus 

 Anagyrus Howard, and a fourth Ectromine, A. albiclavatus Ashmead, 

 which is more like Paraleptomastix Girault than any other described 

 genus and may be placed there at least provisionally. Other discord- 

 ant elements are A. angelicus Howard, which forms the type of the new 

 genus Pseudapliycus described below; A. texanus Howard, here con- 

 sidered to be congeneric with Acerophagus coccois Emily Smith; A. 

 australiensis Howard, serving as type of the new genus Aphycopsis; 

 A. terryi Fullaway, which also must be separated under the new 

 generic name Pseudococcobius; and, finally, A. pulchellus Howard, 

 which must be placed in Girault's recent genus Aenasioidea. The 

 types of A. brunneus Howard and A. howardi Cockerell were not 

 available for study or, as in case of the latter species, in too poor 



PROCEEDINGS U. S. NATIONAL MUSEUM, VOL. 50 No. 2136. 

 10600 Proc.N.M.vol.50 16 36 561 



