ART. 4, 



GENERA CLISTOPYGA AND SCHIZOPYGA CUSHMAN. 



Ovipositor either short or long, but never formed as above; clypeus most frequentjy 

 impressed and emarginate medially, occasionally inflexed and truncate or 

 rounded at apex; apical tarsal joints rarely swollen or with large clawst and 

 onychia; mandibles either broad and bidentate at apex with equal teeth or 

 acute and edentate, in the latter case rarely with a small inner tooth 6. 



Ck Ovipositor never nearly as long as body, cylindrical, or nearly, occasionally de- 

 pressed or decurved at apex; claws simple, without a basal lobe or tooth, occa- 

 sionally (Itopleciis) with claws of front tarsi lobed or (Apechthis) all or front and 

 middle claws lobed, in the last genus the ovipositor is decurved at apex; notauli 

 either absent to obsolete or very deep and pit-like anteriorly, where they aie 

 set off by a sharp carina that runs back along the margin of the lateral lobe ; areolet 

 always present; nervellus always strongly reclivous with the discoidella at or 

 near the upper end; clypeus broadly truncate or arcuate at apex, rarely with a 



distinct median notch-like emargination 7. 



Ovipositor compressed, or if cylindrical it is very long and slender or upcurved; all 

 claws either with or without basal lobes or teeth; notauli strong, rarely weak, or 

 entirely wanting, but never defined aa above 8. 



7. Dorsal margin of lance straight to apex; propodeal spiracle slit-like, the surrounding 

 carina prominent, separated from anterior margin of propodeum by less than its 

 length; notauli subparallel, terminating abruptly posteriorly; polished, with 

 abdomen impunctate; species usually largely bright ferruginous or yellowish; 

 (secondary parasites), fig. 6 Theroniini. 



Fig. 6.— Apex of ovipositoe 

 or Theeokia fulvescens 

 Ceesson. 



Fig. 7.— Apices of ovipositoes: a, Itolplectis conquis- 

 iTOK (Say); 6, Apechthis hcticoenis (Cresson). 



Dorsal margin of lance either decurved near apex or it is flattened at apex ; propodeal 

 spiracle usually round to long oval, rarely slit-like, and usually separated from 

 anterior margin of propodeum by at least its length; notauli, when strong, com- 

 plete and convergent posteriorly; species usually black or blackish with abdo- 

 men distinctly punctured, seldom both pale and with abdomen polished im- 

 punctate; (internal parasites of Lepidopterous pupae), fig. 7 EpMaLtini . 



8. Hjpopygium verf large, vomeriform, acute at apex, very heavily chitinized; 

 clypeus broadly truncate at apex, frequently sharply inflexed and with a more 

 or less distinct median tooth; labrum exserted (parasites on wood-boring 



larvae), fig. 8 Acoenitini . 



Hypopygium retracted from apex of abdomen 9. 



Fig. 8.— Apfx of abpomen of female of Coleocentrus occidentalis Cresson. 



