ICHNEUMON-FLIES — GELINAE : MESOSTENINI 407 



flavojncta from Grenada, Venezuela, British Guiana, and southern 

 Brazil. Collections from intervening localities may show the two to 

 be only subspecifically distinct. 



Specimens: cf, 9, Brownsville, Tex., August 1945, Shiler and More- 

 land (Washmgton). 9, Hidalgo Co., Tex., July 30, 1928, R. H. Beamer 

 (Lawrence). cT, San Jose, Costa Rica, 1928, M. Valeris (Washing- 

 ton). 9, Costa Rica, 1920, Paul Serre (Townes). 9, Mexico, Aug. 30, 

 1950, D. J. Smith (Washmgton). 



This species ranges from near BrownsviUe, Tex., to Costa Rica. 



24. Genus Listrognathus 



Figure 320,a 



Front wing 4.8 to 13.5 mm. long; body moderately stout; frons with 

 a median horn that is pyramidal or conical, the horn sometunes with 

 a short dorsal accessory horn or tine; clj^peus rather small, moderately 

 to strongly convex, its apical 0.35 i usually abruptly declivous so that 

 clypeus appears pyramidal in profile, the apical margin of clypeus 

 evenly convex or subtruncate, without a median point; mesoscutum 

 wealdy convex, polished or subpolished, with coarse punctures; 

 notaulus varying from sharp to indistinct, usually reaching to center 

 of mesoscutum and sometimes beyond; epomia very strong, ending 

 dorsally on an angulate projection in upper margin of pronotum: pro- 

 podemii strongly convex, its basal carina sharp and complete, its apical 

 carina varying from complete and sharp with more or less distinct sub- 

 lateral cristae to absent except for strong sublateral teeth or tubercles; 

 propodeal spiracle short elliptic to elongate; areolet very small, quad- 

 rangular, square, trapezoidal, or a little higher than wide, the second 

 intercubitus weak; ramellus absent; nervulus basad of basal vein by 

 about 0.3 its length; second discoidal cell broad at base; mediella 

 weakly arched; nervellus broken near its lower end; axiUus varying 

 from very close to anal margin to moderately separated from it; first 

 abdominal segment rather stout, the sph'acle far behind the middle 

 and postpetiole strongly expanded, with a strong subbasal lateral 

 tooth, its ventrolateral carina strong and either complete or obsolete 

 basally, its dorsolateral carina blunt, usually distinct near apex of 

 postpetiole, sometimes sharp and distinct on petiole, its median dorsal 

 carinae blunt and vestigial or sometimes sharp on apical part of petiole 

 and basal part of postpetiole; second tergite polished or subpolished, 

 with strong coarse punctures that are moderately close to crowded; 

 tergite 7 without a median white spot but often margined with yellow 

 and sometimes most of the tergite white; ovipositor sheath about 0.32 

 as long as front wing; ovipositor stout, subcylindric, its apex various, 

 as in figure 329,i-n. 



