ICHNEUMON-FLIES — GELINAE : MESOSTENINI 381 



2. Tergites 2-6 uniformly fulvous 5. rufigaster Cushman 



Tergites 2-6 black or infuscate, each with a broad apical white or yeUow 



band 3 



3. Metapleurum entirely white 4. picta, new species 



Metapleurum entirely black 6. introita (Cresson) 



4. Tyloids well developed, in the form of a sharp carina that extends the full 



length of several segments; metapleurum with moderately coarse punc- 

 tures 5 



Tyloids obsolescent, difficult to see, in the form of an indistinct short ridge 

 that extends about 0.4 the length of several segments; metapleurum with 

 fine, weak punctures 6 



5. Cheek about 0.75 as long as basal width of mandible; clypeus moderately 



convex; mesosternum usually entirely fulvous, sometimes partly black, 



rarely entirely black; epomia rather weak 7. acadia Cushman 



Cheek about 0.83 as long as basal width of mandible; clypeus weakly convex; 

 mesosternum largely or entirely black; epomia moderately strong. 



8. rugosa, new species 



6. Mesoscutum black, with a median pair of white dashes. 



3. macula (Cameron) 



Mesoscutum mostly or entirely fulvous, with or without a median pair of 



whitish dashes 7 



7. Eye about 75% surrounded with yellowish white, the whitish orbit being 



interrupted on upper part of temple; mesoscutum without a median pair of 



whitish dashes 1. brunnea, new species 



Eye completely surrounded with yellowish white; mesoscutum with a median 

 pair of whitish dashes 2. alabama Cushman 



FEMALES 



1. Metapleurum with strong horizontal wrinkling 2 



Metapleurum either not wrinkled or if wrinkled it is in an oblique direction 



and the thorax is almost or quite uniformly fulvoferruginous 4 



2. Thorax brownish ferruginous except that only the collar and propodeal teeth 



are whitish; fourth tergite fuscous 1. brunnea, new species 



Thorax fulvous to ferruginous, the scutellum, upper margin of pronotum, a 

 pair of median dashes on mesoscutum, and other markings white; fourth 

 tergite fulvous or ferruginous 3 



3. Pronotum and mesoscutum mostly fulvous, with white markings. 



2. alabama Cushman 

 Pronotum and mesoscutum black, with white markings. 



3. macula (Cameron) 



4. Head and thorax black, or black and white 5 



Head and thorax uniformly ferruginous or fulvous 7 



5. Head and thorax black, without white markings except that propodeal teeth 



are whitish; wings fuscous 6. introita (Cresson) 



Head and thorax black with extensive white markings; wings hyaline . . 6 



6. Tergites 2-6 fuscous basaUy, the rest fulvous and whitish; propodeum basad 



of its basal transverse carina with two large wliite spots. 



4. picta, new species 

 Tergites 2-6 uniformly fulvoferruginous; propodeum basad of its basal trans- 

 verse carina entirely black 5. rufigaster Cushman 



