412 



U. S. NATIONAL MUSEUM BULLETIN 216 



PART 3 



Figures 224-226. — Localities: 224 (left), Listrognathus paludata paludata; 225 (center), 



L. p. calif ornica; lid (right), L. p. ocularis. 



2. Subgenus Suvalta 



Suvalta Cameron, 1903, Zeitschr. Syst. Hymen. Dipt., vol. 3, p. 301. Type: 

 Suvalta rugifrons Cameron; designated by Viereck, 1914. 



Front wing 6 to 10 mm. long; clypeus sharply elevated medially, 

 pyramidal in profile; lower end of occipital carina moderately incurved, 

 joining hj^ostomal carina at an acute angle, not recurved or inter- 

 rupted; hypostomal carina not unusually high ; shoulders on upper edge 

 of pronotum very strong, usually acute; apical transverse carina of 

 propodeum forming rather strong sublateral crests, usually interrupted 

 medially; lower edge of first tergite simple; thyridium wider than its 

 distance from base of second tergite; upper valve of ovipositor usually 

 depressed between nodus and apex. 



This subgenus occurs in the Indo-Australian area. Tlie following 

 described species belong here: Cryptus mobilis Tosquinet 1903, 

 Suoalta laevifrons Cameron 1903, S. pallidinerva Cameron 1904, S. 

 rugijrons Cameron 1903, and S. sjnnifrons Cameron 1905. Cryptus 

 serius Tosquinet 1903 is a synonym of Listrognathus mobilis. 



3. Subgenus Stivadens 



Stivadens Townes, 19G1, in Townes, Towues, and Gupta, A catalogue and reclas- 

 sification of the Indo-Atistralian Ichneumonidae, p. 472. Type: Suvalta 

 annulipes Cameron; original designation. 



Front wmg 9.0 to 12.5 mm. long; similar in general to Suvalta but 

 stouter and broader in build, with one or two strong teeth near 

 midlength of carina on lower margin of first tergite, and upper valve 

 of ovipositor beyond nodus rather broad and flat and with weak cross 

 ridges. 



