ICHNEUMON-FLIES — GELINAE : MESOSTENINI 471 



lb. Acroricnus stylator niger Mitchell 



Acroricniis stylator niger Mitchell, 1950, Ann. Ent. Soc. America, vol. 43, p. 

 253; cf, ?. Type: 9, Robson, B.C. (Ottawa). 



Male: Colored like female except that face, clypeus, labnim, median 

 part of mandible, part or all of front coxae, front of middle coxa, and 

 trochanters, are yellow, the upper part of hind trochanter infuscate. 



Female: Black. Flagellmn fulvous, fuscous above, with a whitish 

 band; scape beneath, front orbit, sometimes parts of face and clypeus, 

 usually the labrum, line on hind orbit, tegula, often subtegular ridge, 

 sometimes part and rarely all of scutellum, part or all of front tro- 

 chanters, second segment of middle and hind trochanters, front and 

 middle femora and tibiae, hind tibia except apical 0.3 ±, and tarsi, 

 yellow or pale fulvous; hind femur black, its basal 0.4 ± fulvous. 



Specimens (27 cf, 159): From British Columbia (Brilhant, Car- 

 bonate on Columbia River at 2,600 ft., Robson, Seton Lake near 

 Lillooet, Trinity Valley, and Vernon); Colorado (Aspen, Ouray at 

 8,500 ft., and West Estes Park at 7,800 ft.); Idaho (5 miles northeast 

 of Leadore, Oakley at 4,542 ft.. Priest Lake at Four Mile Camp, 

 Sandpoint, and "Snake River at Divide Creek"); Montana (near 

 Kalispell, junction of Rock Creek and Madison River in Gallatin 

 National Forest, and Two-Medicine Lake in Glacier Park); Oregon 

 (Queen Mine above Cornucopia at 5,000 ft.) ; and Wyoming (Grand 

 Teton National Park and Mammoth Hot Springs in Yellowstone 

 Park). 



Dates of capture are from late in May to fall, the earlier and later 

 ones being: May 21, 22, 25, and 27 and June 1 at Robson, B.C.; May 

 30 at Lillooet, B.C.; August 30 at Merritt, B.C.; and September 6 

 and October 31 at Robson, B.C. These include dates of capture 

 recorded by Mitchell in the original description. 



This subspecies ranges from southern British Columbia to Colorado, 

 in the Rocky Mountains. 



Ic. Acroricnus stylator excelsus (Cresson) 



Cryptus excelsus Cresson, 1864, Proc. Ent. Soc. Philadelphia, vol. 3, p. 293; cf , 

 ?. Lectotype: 9 , Colorado (Philadelphia). 



Male: Colored like female except that face, clypeus, and mandible 

 are entirely yellow and that yellow areas on front and middle coxae 

 are more extensive. 



Female: Black. Flagellum fulvous, fuscous above, with a median 

 yellowish band; scape beneath, more or less of face and clypeus, 

 labrum, palpi, front orbit, short line on hind orbit, usually a small 

 spot on collar of pronotum, tegula, usually the subtegular ridge, area 

 or line on propodeum, often a spot on mesopleurum, part of front and 

 middle coxae, sometimes spot on hind coxa, front and middle legs 



