ICHNEUMON-FLIES — GELINAE : MESOSTENINI 149 



Sculpture of pleura and propodeum averaging a little coarser and 

 stronger, and punctures on second tergite averaging a little sharper 

 and denser than in the subspecies atricoUaris. 



Typical male: Head black, or sometimes fulvous, the orbits broadly 

 (except upper part of temporal orbit), face (except usually for a pair 

 of dusky spots just above base of clypeus), cheek, and clj^peus, ivory 

 or light yellow; mandible yellow basally, the rest fulvous, tipped with 

 black; palpi ivory, darkened apically; scape and pedicel light fulvous, 

 fuscous above; flagellum black, with a rather narrow ivory band, its 

 base usually with a fulvous stripe; propleurum black, its lower half 

 yellow; front, lower, and upper margins of pronotum yellow, the rest 

 black or black and fulvous, the yellow on upper margin often divided 

 into two yellow dashes; tegula, sub tegular ridge, scutellum, post- 

 scutellum, usually part of upper division of metapleurum, often stripe 

 below sternaulus and a spot above, often apical spot on metapleurum, 

 and sometimes iiTegular transverse band on apical part of propodeum, 

 yellow; sutural markings around wing bases fuscous; front and middle 

 coxae yellow and fulvous, their trochanters yellow; front and middle 

 legs beyond trochanters fulvous, their tarsi brownish apically; hind 

 coxa fulvous, often with a yellow area above; hind first trochanter 

 fulvous or brown; hind second trochanter yellowish; hind leg beyond 

 the trochanters fulvous, the second to fourth tarsal segments light 

 yellow; wings with a faintly fulvous tinge; abdomen fulvous. 



Typical female: Head fulvous or sometimes black, the vertical and 

 frontal orbit and clypeus more or less yellowish; mandible fulvous; 

 palpi light fulvous brown; antenna fulvous brown, darker apically, 

 with a white band that covers about 4 segments and is fulvous below; 

 propleurum black, its lower half fulvous, the rest of thorax fulvous 

 with some restricted sutural black marks and the front and lower 

 edge of pronotum, more or less of upper edge of pronotum, mark on 

 subtegular ridge, postscutellum, and apex of scutellum, yellowish; 

 tegula fulvous; legs fulvous, the first trochanters usually brownish 

 basally and the tarsi brownish apically, the second and third segments 

 of hind tarsus more or less yellow; wings with a fulvous tinge; abdo- 

 men fulvous. 



This subspecies is more sharply marked than the others, and though 

 there are intergrading tendencies, w^e have seen only two specimens 

 which cannot be placed easily. One is a female from Jenny Lake, 

 Grand Tetons, Wyo., June 1941, G. E. Bohart (Davis), which is in- 

 termediate to the subspecies atricoUaris. The other is the type spec- 

 men of atriceps, a female from Great Salt Lake, Utah. It has the 

 tegula partly white and partly fulvous and the pronotum black with 

 a broad fulvous mark along its upper and lower edges. It does not 



