ICHNEUMON-FLIES — GELINAE : MESOSTENINI 



475 



Figures 263-265.— Localities: 263 (left), Acroricnus stylator aequatus; 264 (center), 

 A. s. axilaris; 265 (right), A. s. edwardsii. 



Ig. Acroricnus stylator axilaris Mitchell 



Acroricnus stylator axilaris Mitchell, 1950, Ann. Ent. Soc, America, vol. 43, 

 p. 259; 9. Type: 9, Harney Peak, S. Dak. (Washington). 



Male: Unknown. 



Female: Colored like female of subspecies excelsus except that 

 liindfemm:is almost entirely black (only a narrow basal ring fulvous) 

 and yellow marking on thorax averages less extensive. 



Specimens: 9, Custer, S. Dak. (East Lansing). 89, 12 miles south- 

 west of Rapid City, S. Dak., Aug. 25, 1948, Evans and Ball (Ottawa). 

 The eight specimens from near Rapid City are part of a series of 1 cT, 

 119 which, as a series, is intermediate to the subspecies excelsus. 

 Eight females of the series are classified (rather arbitrarily) as the 

 subspecies axilaris and the rest as excelsus. 



Ih. Acroricnus stylator edwardsii (Cresson) 



Linoceras Edwardsii Cresson, 1878, Proc. Acad. Nat. Sci. Philadelphia, vol. 30, 

 p. 365; cf. Tj-pe: cf , California (Philadelphia). 



Male: Colored hke the female except as follows: propodeum, 

 metapleurum, area behind hind wing, and hind coxa often without 

 yellow markings; hind femur black with its basal 0.3 i fulvous; hind 

 tibia usually infuscate apically; abdominal tergites usually less 

 extensively marked with yellow, the fifth and following tergites often 

 entirely black. 



Female: Black. Flagellum yellowish to fulvous below, fuscous 

 above, with a yellowish band; scape beneath, front and hind orbits, 

 face, clypeus, labrum, mandible, pronotal collar, areas of variable 

 extent on pronotum and mesoscutum, tegula, subtegular ridge, rarely 

 patches on mesopleurum, scutellum, postscutellum, area behind hind 



