ICHNEUMON-FLIES — GELINAE I MESOSTENINI 



201 



Figures 94-96.- 



-Localities: 94 (left), Trachysfhyrus facificus;9S (center), T. serraticaudus; 

 96 (right), T. calescens robustus. 



convex; depression on frons dorsolaterad of antennal socket rather 

 shallow; under side of hind femur with a subapical longitudinal ridge 

 (wealdy developed in male, rather strong in female) ; front tarsus of 

 female a little expanded, about 1.1 as wide as front tibia, as in figure 

 377; ovipositor tip rather short, distinctly upcurved, as in figure 328, o. 



This species is Holarctic. Though we have seen some Eurasian ma- 

 terial in European museums, there is now before us only a single female 

 from Germany, which is of course not enough for a general discussion 

 of the Eurasian forms. The typical European form, at least in the 

 female, has the abdomen black with the second and third tergites 

 ferruginous, and the wings faintly infuscate. In American specimens 

 the abdomen varies from entirely black to entirely ferruginous, if 

 partly black and partly ferruginous it is black basally and ferruginous 

 apically, not ferruginous in the middle and black at both ends as in 

 the subspecies calescens. The Avings of American specimens vary from 

 weakly to strongly infuscate. These differences seem constant enough 

 for the separation of the American populations as a subspecies, which 

 is so treated below. 



The European form should be called Trachysphyrus calescens cales- 

 cens (Gravenhorst) . It was described in 1829 (Opuscula ichneu- 

 monologia, vol. 2, p. 548). Its type is a female from the Piedmont of 

 Italy, in the Gravenhorst collection in Wroclaw. Prof. Jan Noskie- 

 wicz was kind enough to compare specimens with the type for us. 



10a. Trachysphyrus calescens robustus (Cresson), new status 



Cryptus robustus Cresson, 1864, Proc. Ent. Soc. Philadelphia, vol. 3, p. 298; ? . 



Lectotype: 9, Colorado (Philadelphia). 

 Cryptus crassicornis Cresson, 1864, Proc. Ent. Soc. Philadelphia, vol. 3, p. 292; 



cf. Lectotype: cf, Colorado (Philadelphia). 

 589900—62 14 



