ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 235 



34. Exochus peroniae, new species 



Figures 189,u; 194,f 



Front wing 3.3 to 5.8 mm. long; combined face and clypeus about 

 1.15 as high as wide, their vertical convexity uniform and moderately 

 strong, their transverse convexity stronger than the vertical, their 

 punctures moderately coarse, separated by about 0.3 their diameter 

 on the face, much sparser on the clypeus; interantennal process with 

 an apical angle of about 100 degrees; frons with rather strong oblique 

 impressions, between which it is rather strongly swollen; median 0.4 

 of clypeus truncate; mandible broad basally, with sparse coarse 

 punctures, rather evenly tapered to a moderately broad apex, its 

 lower tooth very small; hind ocellus separated from eye by about 0.88 

 its long diameter in male, by about 1.0 its long diameter in female; 

 costula weak and broadly interrupted medially; second lateral area 

 of propodeum with a few hairs basally and apicolaterally, or in some 

 males more extensively hairy; hind femur about 2.25 as long as deep 

 in male, about 1.90 as long as deep in female; front spur of hind tibia 

 about 3.2 as long as wide; punctures on second abdominal tergite of 

 moderate size, sharp, usually sparse or almost absent medially, sub- 

 laterally separated by about 2.5 their diameter; male clasper excep- 

 tionally narrow. 



Black. Face, narrow orbital line on lower half of frons, elongate 

 triangle at top of eye, cheek, adjacent part of temple, mouth parts, 

 under side of scape and pedicel, lower margin of propleurum of male, 

 elongate hind corner of pronotum, tegula, sub tegular ridge, vertical ellip- 

 tical spot on upper part of male prepectus, hind margin of scutellum, 

 postscutellum, and in most males a spot on mesosternum in front of 

 middle coxa, pale yellow; flagellum brown beneath, the rest blackish 

 brown; mesopleurum and metapleurum next to their coxae narrowly 

 pale yellow or fulvous; front and middle coxae pale yellowish, fulvous 

 basally, or in females often almost entirely fulvous; hind coxa fulvous; 

 trochanters pale yellow to fulvous; front and middle femora pale ful- 

 vous, pale yellow apically; hind femur fulvous, tinged with pale yellow 

 apically above, front and middle tibiae yellowish white on basal 0.45 ± , 

 the rest fulvous, in the female sometimes weakly infuscate, especially 

 on middle tibia; front and middle tarsi stramineous, darker apically; 

 hind tibia whitish, its basal 0.14 ± and apical 0.4 ± fuscous; hind tarsus 

 whitish, the apex of the first to fourth segments and apical 0.7 ± of 

 fifth segment light brown to fuscous. 



Type: 9, Ashford, Wash., Aug. 18, 1940, H. and M. Townes (Wash- 

 ington, USNM 63666). 



Paratypes (47 cf, 639): From British Columbia (Barriere, Edge- 

 wood, Fish Lake Road at Kamloops, near Foreman, Fish Trap in 



