ICHNEUMON-FLIES — GELINAE I MESOSTENINI 51 



fauna, we have no female specimens intermediate to either of the 

 other two subspecies, but among the males at hand there are a num- 

 ber that are intergrades on the IvnowTi characters. The subspecies 

 similaris and rufopectiis appear to intergrade in Alberta and British 

 Columbia. 



The treatment below includes the European subspecies abbreviator, 

 to show how it differs from the Nearctic forms. We have both short 

 winged and long winged females from Em*ope, which appear to belong 

 to the same species. Several names have been proposed for the short 

 winged female. It is probable that there are additional names for 

 the long winged female and for the male, but because of scanty Em-o- 

 pean material and lack of access to the types we have given only the 

 reference to the original description of abbreviaior in the synonymy. 

 We have some Japanese specimens that may be only subspecifically 

 distinct from abbreviator, but considering the many taxonomic un- 

 certainties do not discuss these further at this time. 



In both Europe and America the species is widespread and abundant. 

 Adults occur among the undergrowth of woods, especially around 

 the edges and in sunlit openings. Both sawfly and lepidopterous 

 cocoons serve as hosts. 



MALES 



1. Basal 0.18 rt of hind tibia not at all or only a very little paler than the rest 



of the tibia, fuscoferruginous to fulvous in color; range: Rocky Mountains 

 from Alberta to New Mexico, and westward to the Pacific Coast. 



5c. abbreviator rufopectus Cushman 



Basal 0.18± of hind tibia distinctly paler than the rest of the tibia, whitish 



to light brown in color 2 



2. Scape fulvous in front; fifth tergite more or less ferruginous or sometimes 



black; hind coxa fulvous; range: AUeghanian and Carolinian faunas. 



5d. abbreviator iridegcens (Cresson) 



Scape brown to black in front; fifth tergite black; hind coxa black or more or 



less fulvous 3 



3. Hind femur usually mostly black, its base more or less ferruginous; apex of 



first tergite with a whitish band; range: Europe. 



5a. abbreviator abbreviator (Fabricius) 

 Hind femur usually ferruginous with its apex black; apex of first tergite 

 fuscous or ferruginous; range: Much of northern North America. 



5b. abbreviator similaris (Provancher) 



FEMALES 



1. Base of hind tibia without a pale band; flagellum without a median white 

 stripe above or with a stripe that covers usually less than 5 segments; 

 long winged specimens predominant; range: British Columbia and Alberta 

 to California and New Mexico . 5c. abbreviator rufopectus Cushman 

 Base of hind tibia with a pale band; flagellum with a median white stripe 

 above that covers about 5.5 segments 2 



