ICHNEUMON-FLIES OF AMERICA: 1. METOPIINAE 77 



Paratypes: 3d", Grand Canyon at 7,000 ft., Ariz., June 5, 1940, 

 R. M. Bohart (Townes). d\ 9, same data as type (Townes). 9, 

 Osoyoos, B. C., May 28, 1938, G. S. Walley (Ottawa), tf, Lone 

 Pine, Calif., June 14, 1937, N. W. Frazier (Berkeley). 9, 5 miles south 

 of Meyers, Calif., July 24, 1955, J. C. Downey (Davis), d\ Valyermo, 

 Calif., Apr. 21, 1940, R. M. Bohart (Townes). d\ Frenchglen, 

 Oreg., July 6, 1935, Stanley Jewett, Jr. (Townes). 9, Vernon, Utah, 

 June 8, 1943, G. F. Knowlton and P. E. Telford (Berkeley). 



This species ranges from British Columbia to northern Arizona. 

 Adults occur in early summer. 



3. Subgenus Cultrarius 



Figures 168, a, b 



Cultrarius Davis, 1897, Trans. Amer. Ent. Soc, vol. 24, p. 197. Type: Metopius 

 rileyi Marlatt; monobasic. 



Facial shield escutcheon-shaped, its upper edge arcuate, its lower 

 side usually broadly rounded and without a basal point; disc of facial 

 shield sometimes with a longitudinal carina; interantennal process 

 compressed and forming or surmounted by a median longitudinal 

 ridge, continuous dorsally with a sharply compressed tubercle in 

 middle of frons; clypeus broad, its margin almost straight, distinctly 

 reflexed and elevated away from base of labrum; lower tooth of 

 mandible entirely absent; galea and glossa often elongate (anthophi- 

 lous); temple strongly convex; occipital carina rather distant from 

 foramen magnum, strong above but fading out just above level of 

 center of foramen magnum; prepectal carina, if complete above, 

 angled strongly forward just above sternaulus almost to reach front 

 edge of mesopleurum, then paralleling front edge of mesopleurum to 

 near sub tegular ridge; second recurrent vein with one bulla, or rarely 

 with two; hind femur about three times as long as deep; claws on 

 front and middle tarsi pectinate on their basal 0.3 to 0.65, or pectinate 

 throughout; first tergite in profile low, rounded or weakly angled at 

 the juncture of its dorsal and basodorsal faces; male clasper convex, 

 without a lateral ridge. 



All the known species of this subgenus are Nearctic. 



Key to the species of the subgenus Cultrarius 



1. Claws of front and middle tarsi pectinate to the apical point; galea short, 



not projecting; spring and early summer species 2 



Claws of front and middle tarsi pectinate on their basal 0.25 to 0.7, not 

 pectinate to the apical point; galea elongate (0.6 to 1.0 as long as mandible), 

 projecting; autumnal species 4 



2. Facial shield with a median longitudinal carina; mesoscutum with an antero- 



lateral yellow spot 3. scapulatus, new species 



Facial shield without a median longitudinal carina; mesoscutum entirely black . 3 



