. Bulletin - United States National Museum. Science. ICHNEUMON-FLIES—GELINAE : MESOSTENINI 249 Cryptus inornatus Pratt, 1945, Amer. Midi. Nat., vol. 34, p. 612; cf, 9- synonymy. Type: 9, Bozeman, 4,800 ft., Mont. (Washington). Jew Male: Black. Orbit broadly in front, narrow orbital stripes at top of eye and on temple, median spot on face, clypeus, front of scape, mandible, subtegular ridge, under side of front coxa and sometimes of middle coxa, and under side of first trochanter of front and middle legs, white; palpi mostly brown, the second segment of maxillary palpus white in front; tegula e
. Bulletin - United States National Museum. Science. ICHNEUMON-FLIES—GELINAE : MESOSTENINI 249 Cryptus inornatus Pratt, 1945, Amer. Midi. Nat., vol. 34, p. 612; cf, 9- synonymy. Type: 9, Bozeman, 4,800 ft., Mont. (Washington). Jew Male: Black. Orbit broadly in front, narrow orbital stripes at top of eye and on temple, median spot on face, clypeus, front of scape, mandible, subtegular ridge, under side of front coxa and sometimes of middle coxa, and under side of first trochanter of front and middle legs, white; palpi mostly brown, the second segment of maxillary palpus white in front; tegula entirely white or more or less of its apical part brown; front and middle femora brown to fuscous, most of front femur and apical part of middle femur stramineous or whitish in front; front and middle tibiae brown or fuscous, white above; front and middle tarsi brown, the basal segments often whitish above; hind tarsus with all or most of segments 2-4, and often apex of segment 1, white; seg- ment 5 of hind tarsus brown; wings subhyaline to wealdy infuscate; segment 1 of abdomen black, its apical ± red; second and follow- ing abdominal segments red; clasper and subgenital plate fuscous. Female: Black. Orbit with a narrow whitish stripe in front and behind; front of front femur brown; tegula, front and middle tibiae and tarsi, and median segments of hind tarsus dark brown to blackish; wings moderately to strongly mfuscate; abdomen red, the basal ± of its first segment fuscous. This subspecies intergrades with the subspecies albitarsis wherever their ranges are adjacent. In the Canadian zone of the East the intergradation is particularly gradual and the placement of specimens or populations is often arbitrary. For deciding borderline cases we use the characters in the key. The presence of a white spot on the scutellum of the male is rather easy to determine, but the question of how dark the wings of a female must be before it is classified as the subspecies argentifron
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