14 NEW NEOTROPICAL EVANllDAE (hYMENOPTERa) 



Key to Species of Brachygaster here described 



1. Petiole and thorax entirely ferruginous or fulvous; species from G to 8 mm. 



in length 2 



Petiole dominantly black, thorax entirely or partially black; species not 

 over 4.5 mm. in length 3 



2. Alitrunk nearly twice as long as high; head above antennae with a concave, 



somewhat faintly, transversely striate, mesal area .... rubia new species 



Alitrunk about one and one-half times as long as high; above antennae 



nearly flat, coarsely punctate peruviana new species 



3. Metunapleura with an oblique i)olislicd, imj)unctate area; thorax not 



entirely black 4 



Metunapleura without an oblique iiolishcd, impimctate area; thorax 

 entirely black angustata new species 



4. Humeral angle rounded, pronotum not forming a narrow collar visible 



from above; caudo-dorsal angle of mesoi)lcura with some large punctures. 



exitnia new species 

 Humeral angle angular, pronotiun forming a collar visible from above; 

 caudo-dorsal angle of mesopleura impunctate, polished. 



parish! new species 



Brachygaster rubia new species 



Female. Length, 8 mm. 



Head,' mandibles, scape, pedicel, first two and proximal ])ortion of third 

 flagellar segments, thorax, propodeum, jietiole and legs ferruginous, partic- 

 ularly above antennae nearly carmine. Dentes of mandible, flagellum distad 

 of proximal portion of third segment and abdomen, black. 



Head below antennae with coarse, irregular, often confluent punctures 

 and a small, slightly elevated, impunctate tubercle on clypeus; face separated 

 from malar space by a distinct, elevated, impunctate carina which extends 

 from ujiper angle of the base of the mandible upward along inner margin of 

 eye as far as antennae; occipital orbits greatly constricted above and one- 

 half as wide below as length of the scape, with a few scattered punctures of 

 moderate size; malar space about one-fifth as long as eye, less than one-third 

 as long as scape, with several moderately-sized punctures; mandibles weakly 

 jjunctate. Head above antennae with a concave, somewhat faintly trans- 

 versely striate mesal area, limited laterally and above by coarse, irregular, 

 often (ionfluent punctures; area behind the ocelli with some i)unctures, mucli 

 smaller than those below. Head viewed from above much broader than 

 thorax, transversely subquadrate, about twice as broad as long, noticeably 

 convex in region of fossae; viewed from front with ocellar area not elevated, 

 eyes almost parallel; ocelli arranged in a triangle, lateral ocelli about twice 

 as far apart as distance from inner margin of ej'c; with numerous golden 

 setae, largest and most abundant below antennae. Antennae inserted close 

 together well below middle of (^yes, fineh', densely setaceous, flagellum clavate, 

 tai)ering to distal end, ventral surface of clavate segments flat, scai)e finely, 



