ICHNEUMON-FLIES, PART 2 1 EPHIALTINAE 167 



2. Apical and subbasal dark bands on hind tibia separated by a complete pale 

 band (fig. 321,j) ; temple moderately convex; second recurrent vein distinctly 



beyond middle of areolet 1. stercorator (Fabricius) 



Apical and subbasal dark bands on hind tibia connected ventral! y by a dark 

 stripe (fig. 321, k); temple strongly convex; second recurrent vein at or very 

 near middle of areolet 2. californiensis Cushman 



1. Iseropus stercorator (Fabricius) 



Figures 331,b; 361 



Front wing 4.5 to 7.8 mm. long; punctures on face moderately 

 coarse; temple moderately convex; propodeum moderately broad, 

 rather weakly convex in profile, sublaterally with few punctures, dorso- 

 laterally sharply rounded and with a more or less distinct rounded 

 longitudinal ridge; second recurrent definitely beyond middle of 

 areolet; male clasper with a short apical point, not conspicuously 

 projecting. 



Male: Black. Face, clypeus, palpi, extreme hind corner of pro- 

 notum, and tegula, white; under side of scape blackish to light brown, 

 or sometimes white; flagellum stramineous beneath, at apex blackish 

 beneath; front and middle coxae largely or mostly ivory, the rest 

 fulvous; hind coxa fulvous; trochanters ivory; femora fulvous, the 

 front and middle femora ivory apically and the hind femur often with 

 a fuscous apical mark; front and middle tibiae and tarsi ivory variously 

 tinged with or replaced by light fulvous; hind tibia white to dusky 

 fulvous, with broad subbasal and apical black bands; first four seg- 

 ments of hind tarsus white, their apices broadly black, the apical 0.4 

 to 0.6 of the second segment black; fifth segment of hind tarsus black, 

 narrowly paler at base. 



Female: Black. Clypeus reddish brown, blackish basaUy; flagellum 

 fulvous brown beneath; maxillary palpus whitish to blackish brown; 

 labial palpus light brown to blackish; flagellum fulvous brown be- 

 neath; extreme hind corner of pronotum usually stramineous or 

 whitish; tegula white to stramineous and brown; front and middle 

 legs almost entirely fulvous, the front coxa more or less infuscate 

 except at apex; hind coxa, trochanters, and femur fulvous, the femur 

 often fuscous at apex; hind tibia white to fulvous, broadly banded 

 with black; first four segments of hind tarsus white to pale brown, 

 their apices broadly black, the second segment with its apical 0.45 

 to 0.7 black; fifth segment of hind tarsus black, narrowly paler at base. 



There is a European and a Nearctic subspecies, as keyed below : 



1. Hind femur without a distinct apical fuscous mark; tegula of female stra- 

 mineous, the apical half more or less brownish; range: Europe. 



la. stercorator stercorator (Fabricius) 



Hind femur with a conspicuous apical fuscous mark (fig. 321,j), except in 



some specimens from central and southern California; tegula of female 



white; range: North America lb. stercorator orgyiae (Ashmead) 



