No. 2315. TRIBBS0FIGHNEVM0NINAE—CU8HMAN AND ROHWER. 389 



5. Ovipositor short, never more than half as long as abdomen, compressed, with a dis- 

 tinct swelling below at or about the middle, beyond which it tapers to a very 

 acute point; clypeus strongly convex, rounded at or most truncate at apex, never 

 medially impressed or inflexed; last tarsal joints swollen, claws and onychia 

 very large, all claws with basal tooth; face narrow, convergent below; mandibles 

 narrow at apex, upper tooth much the longer; areolet only rarely defined; (ex- 

 ternal pai'asites on spiders), fig. 6 , Polysphinctini. 



Fig. 6.- 



-Apices of ovrPosiTORs: a.PoLYSPHiNCTA texana Cresson; b, Hymengepimecis wiLTn (Cres- 

 soN); Manbible: c, Hymenokpimecis wiltu (Cresson). 



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

 impressed and emarginate medially, occasionally inflexed and truncate or 

 rounded at apex; apical tarsal joints rai'ely swollen or with large claws 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. 



6. 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 (Itoplectis) 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 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. 



Ovipostor 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 as 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. 7 Theroniini. 





Fig. 7.— Apex of ovepositob 

 OF Theronia fulvescens Fig. 8.— Apices of ovipositors: a, Itolplectis conquis- 



Cresson. itor (Say); 6, Apechthis picticornis (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. 8 Ephialtini. 



