THE ICHNEUMONID GENUS BRACHYCYRTUS CUSHMAI^ 19 



BRACHYCYRTUS PRETIOSUS, new species 



Figure 1 



This species in the only known representative of a group that, 

 in its deeply emarginate eyes, deep scutellar fovea, and completely 

 areolated propodeum, is more similar to the Old World group than 

 to the other American group ; but from the former it is amply dis- 

 tinct by the characters of the first couplet of the foregoing key. 



Female. — Length 6.0 mm; antenna 4.5 mm; ovipositor sheath 

 1.0 mm. 



Head polished, from above distinctly less than half as thick as 

 broad; temples almost perpendicular, weakly convex; ©cellar triangle 

 weakly transverse; head in front view slightly broader than long, 

 eyes together comprising almost exactly two-thirds of its total width ; 

 eyes very deeply, subtriangularly emarginate ; face parallel-sided, as 

 long as broad, distinctly narrower than frons, in profile strongly 

 convex, weakly and sparsely punctate ; clypeus nearly twice as broad 

 as long, narrowly truncate at apex; malar space barely half basal 



Figure 1. — Brachycyrtus pretiosus, new species: a. Head; b, propodeum. 



width of mandible; occipital carina straight below and joining hypo- 

 stomal carina immediately behind base of mandible; antennae 29- 

 jointed, basal joint of flagellum hardly four times as long as thick, 

 not nearly twice as long as second, subapical joints twice as thick 

 as first joint. 



Thorax as deep as long, polished, mesoscutum and propodeum 

 obscurely punctate, scutelimn more distinctly so; epomia developed 

 in lower half; prepectal carina extending about halfway up ante- 

 rior margin of mesopleurum; mesopleural scrobe diverging only 

 slightly from posterior margin; notauli entirely absent; scutelimn 

 broader than long, wealdy convex, margined to apex, its fovea very 

 deep and narrow but not limited anteriorly by a distinct carina ; pro- 

 podeum densely clothed with rather long white pubescence, com- 

 pletely areolated, areola as broad as long, rounded anteriorly, cos- 

 tulae not far before apex. Intercubitus more than half as long as 

 space between it and second recurrent; nervulus postf ureal by a little 

 more than its length; abscissula fully three-fourths as long as 

 intercubitella. 



