NO. 2341). REVISION OF NEARCTIC APANTELE8—MUESEBECE. 497 



First abdominal tergite broadening gradually from base to apex; or, if 

 apex is apparently no broader than base, then first and second tergites 

 are largely smooth and shining, and the second subtriangular, being 

 narrowed at base, or the inner spur of the posterior tibiae is distinctly 

 longer than half the metatarsus; ovipositor sheaths never strongly pro- 

 jecting, usually subexserted 120. 



]i;-5. Entirely stramiiieous 113. roUniae (Fitch). 



Mostly black 114- 



IM. I'ropodeum without a median longitudinal carina, and partly smooth and 

 shining; ovipositor sheaths strongly projecting, about as long as the first 

 abdominal tergite; abdomen never strongly compressed; dorsal abdom- 

 inal tergites always black 115- 



Propodeum rugose, dull, usually with a distinct median longitudinal carina ; 

 ovipositor sheaths subexserted, or with the abdomen strongly compressed 

 (m the apical half; sometimes the third tergite testaceous laterally_-117. 



115. Inner spur of posterior tibiae distinctly longer than the outer ; legs varying 



in color from entirely yellowish, including the coxae, to black; tegulae 



usually pale 114. ornigis Weed. 



Inner spur of posterior tibiae not longer than outer; tegulae always 

 black 116. 



116. Jlesoscutum and disk of scutellum smooth and strongly shining; posterior 



femora mostly testaceous, at least in the f emale-115. bedcUiae ( Viereck ) , 



Mesoscutum and disk of scutellum opaque, the latter distinctly punctate; 



legs in both sexes deep black 116. rohweri, new name. 



117. Third abdominal tergite roughened on basal half in the middle ,__118. 



Third abdominal tergite practically smooth 119. 



118. Abdomen short, broad; posterior coxae with a conspicuous flattened, 



shining area on outer face at base above; posterior tibiae blackish on 

 apical two-thirds; apical margin of second abdominal tergite straight.- 



117. empretiae (Viereck). 



Abdomen rather slender, strongly compressed posteriorly in the female; 



posterior coxae rather evenly rounded at base, without such flattened 



area; posterior tibiae dusky only at extreme apes; apical margin of 



the second tergite often curving forward at the sides. 



118. diacrisiae Gahan. 



119. Posterior coxae black ; posterior femora and tibiae entirely yellow ; poste- 



rior margin of second abdominal tergite straight. 



119. depressus (Viereck). 



Posterior coxae usually yellowish on apical half; posterior femora always 



blackish on apical fourth above, also apex of posterior tibiae blackish ; 



posterior margin of secoi>d abdominal tergite usually distinctly curving 



forward at the sides 120. pyralidis, new species. 



120. Second abdominal tergite subtriangular, much broader at apex than at 



base, hardly as broad at base as long; first tergite very slightly, or not 

 at all, broader at apex than at base ; both first and second tergites partly 

 smooth and shining ; inner spur of posterior tibiae very long, about two- 

 thirds as long as the metatarsus 121. paleacritae Riley. 



Second abdominal tergite very rarely subtriangular, and then with the 

 inner spur of posterior tibiae not longer than half the metatarsus 121. 



121. First abdominal tergite slender, no broader at apex than at base, the second 



very short, much broader at apex than at base, and defined laterally by 

 sharp oblique grooves, mostly smooth and shining; hind femora largely 

 blackish or fuscous ; inner spur of posterior tibiae longer than the outer, 

 and distinctly longer than half the metatarsus__122. euchaetis Ashmead. 



Not the above combination of characters 122. 



181404— 21— Proc.N.ar.vol.SS 31 



