HTOKGlc^ 



YOL. lY. 



BROOKLYN, JUNE, 1888. 



NO. 8. 



A Revised Generic Table of the EURYTOMINiE, 

 with Descriptions of New Species. 



By William H. Ashmead. 



(Part I.) 



Prof. Westwood's group Euiytomidcs, in the family Chalcididcs, has 

 always been an attractive one to students in the order Hymenoptera, on 

 account of the dissimilarity in the habits of some of the species represent- 

 ing the group ; for, while the major portion of them are true parasites, 

 it is now a thoroughly established fact that a small portion of them are 

 unquestionably Phytophagous, or pseudo gall-makers; and, if we exclude 

 the BlastophagcB, or Fig-caprifiers from the famil\' ChalcididtP , they are 

 then the only ones in the whole family out of thousands of species that 

 have this habit. 



Up to the present day, the species composing the group, have been 

 placed in but seven genera, viz : — Eiirytoma, Illiger, 1 807 ; Decatoma, 

 Spinola, i8ix ; Isosoma, Walker, 1832; Syslole, Walker, 1832; Phy- 

 lachyra, Haliday, 1871 ; Aw/omorphus, WaWier, 1871; ?ind Bephra /a, 

 Cameron, 1884. 



But recentlv, in working up my material in the grt)Up, the acumula- 

 tion of several years, I have found it necessary to erect many additional 

 genera andbelowl give a carefully prepared anal\tic tal)le of all the known 

 genera, with the essential characters of the new ones recognized, which 

 will be followed by another paper with descriptions of the new species. 



The table is as follows : 



