738 M. W. R. de V. GRAHAM 



Nemicromelus Girault, 1917c : 4. Type-species : Merisus subapterus Riley, by original 



designation. 



Enpteromalus Kurdjumov ; Gahan, 1921 : 240-241. 



Eupteromalus Kurdjumov ; Gahan, 1933 : 75-89. 



Eupteromalus Kurdjumov ; Nikol'skaya, 1952 : 221. 



Eupteromalus Kurdjumov ; Graham, 19566 : 254-255. 



Eupteromalus Kurdjumov ; Peck, 1963 : 683-690. 



Eupteromalus Kurdjumov ; Peck et al., 1964, : 51. 



Both Ashmead (1904) and Schmiedeknecht (1909) misidentified the genus 

 Trichomalus Thomson, which they described as having the occiput margined, 

 whereas in the true Trichomahis it is not margined. Kurdjumov (1913 : 12) proposed 

 the name Eupteromalus for the genus misidentified by these authors. 



N emicromalus Girault was synonymized with Eupteromalus by Gahan (1933 : 

 80-81). 



From the original description, Trichomahpsis Crawford might be the same as 

 Eupteromalus ; but I have not seen the type-species and cannot check this. If 

 Trichomalopsis should prove to be identical with Eupteromalus it would take 

 priority as it antedates the latter by two months. The name Eupteromalus, 

 however, is so well known that its replacement in that event seems undesirable. 



The European species of Eupteromalus badly need revision. I have attempted 

 to go some way towards this in the present work, but much remains to be done. 

 The North American species are better known, thanks especially to the work of 

 Gahan. Dr. B. D. Burks very kindly sent me types of several of these species for 

 examination. When writing he mentioned the great difficulties encountered when 

 attempting to construct a key to the North American species. As a result of my 

 experience in trying to make one for the European species, I can heartily sympathize. 

 Some of the American species proved to be so close to certain European ones that 

 I decided it would be helpful to include the former in the present study, in order 

 to show such differences as I have found. By so doing I hope that my key may 

 help students in North America. It seems likely that some of our European species 

 which have not hitherto been recorded from the Nearctic region, may eventually 

 be found there. 



Key to European and North American Species 

 (Females) 



1 Wings fully developed with normal venation ...... 2 



Wings more or less abbreviated, not reaching to the tip of the gaster ; 



venation often abnormal . . . . . . . . .41 



2 (1) Fore wing with basal cell (upper surface) with 8-13 hairs in its distal part. 



Gaster (Text-fig. 595) subcircular, shorter than the thorax ; ovipositor 

 sheaths testaceous 



Antenna, Text-fig. 597 .... pompilicola sp. n. (p. 752) 



Fore wing with basal cell (upper surface) bare, or rarely with 1-3 isolated hairs 

 near the basal vein. Gaster ovate to lanceolate-ovate ; ovipositor sheaths 

 dark ............. 3 



3 (2) Gaster (Text-fig. 596) with basal tergite with a transverse band of alutaceous 



sculpture about in the middle, and with 1-2 rows of hairs ; the three 



