256 U. S. NATIONAL MUSEUM BULLETIN 2 1 6 part 3 



10. Genus Chromocryptus 



FiGUE 313,a 



Chromocryptus Ashmead, 1900, Proc. U.S. Nat. Mus., vol. 23, p. 41. Type: {Chro- 

 mocryptus albopictus Ashmead) = planosae (Fitch); original designation. 



Mesostenimorpha Viereck, 1913, Proc. U.S. Nat Mus., vol. 44, p. 566. Type: 

 (Cryptus nebraskensis Ashmead) =planosae (Fitch); original designation. 



Front mng 4.3 to 6.2 mm. long; body proportions moderate; frons 

 unarmed; clypeus moderately small and convex, its apical 0.35 some- 

 what impressed so that in profile the clypeus has the outline of a low 

 pyramid; mesoscutum rather strongly convex, coarsely and closely 

 punctate, its notaulus moderately sharp, reaching beyond the middle; 

 epomia rather long and strong; propodeum with distinct dorsal and 

 posterodorsal faces, its two transverse carinae strong, complete, 

 rather close together, the apical carina forming strong but blunt sub- 

 lateral crests; longitudinal carinae of propodeum vestigial in female, 

 rather strong in male, the areola and median apical area weakly de- 

 fined in female, clearly defined in male; propodeal spiracle subcircular; 

 areolet pentagonal; ramellus rudimentary; nervulus a little basad of 

 basal vein; mediella rather strongly arched basally, the rest 

 weakly arched; nervellus broken near its lower 0.28; axillus close to 

 anal margin; spiracle of first abdominal segment far beyond the mid- 

 dle, the postpetiole rather strongly expanded, moderately convex 

 above; first tergite with a weak basolateral flange but without a dis- 

 tinct basolateral tooth; ventrolateral carina of first tergite sharp 

 thi'oughout; dorsolateral carina of first tergite complete but blunt; 

 median dorsal carinae of fu*st tergite faint but traceable to near mid- 

 dle of postpetiole; second tergite subpolished, its punctures coarse, 

 strong, subadjacent; seventh tergite usually margined with white but 

 without a white median spot; ovipositor sheath about 0.43 as long as 

 front wing; ovipositor a little compressed, its tip slender, somewhat 

 sagittate. 



This genus is an aberrant offshoot of the genus Trachysphyrus. 

 In our area it contains a single species. Some additional species in 

 southern South America may be assignable to it. Ichneumon bifasci- 

 ator Thunberg 1822 and /. pnlchratorius Thunbergl822 were assigned 

 to Chromocryptus by Roman in 1912. Both of these belong in Ly- 

 meon, where they make new combinations. 



Chromocryptus planosae (Fitch) 



Front wing 4.3 to 6.2 mm. long; general structure and proportions 

 as in figure 3 13, a, the head and body with rather coarse, close punc- 

 tures and the propodeum rather strongly rugulose; second and third 

 tergites with rather strong, close punctures. 



