No. 2315. TRIBES OF IGHNEUMONINAE—GUSHMAN AND ROHWER. 391 



12. Mandibles edentate at apex, rarely with a email entodoreal tooth; legs slender, 

 fig. 14 Xoridini. 



Fig. 14.— Mandible of Poemenia Americana (Cres.sok). 

 Mandibles bidentate at apex, the teeth subequal in length ; legs stout . Odonfommni. 



KEY TO TRIBES. 



1. Abdomen inserted above, frequently far above, the hind coxae, first tergite narrow 



throughout; head transverse; occiput narrow, completely margined, barely 

 concave; temples short and strongly convexly sloping; eyes emarginate within; 

 propodeum nearly straight and horizontal from base to insertion of abdomen; 

 hind coxae long, slender and nearly uniform in diameter; thoracic dorsum not 



at all transversely rugose Labenini. 



Not agreeing entii'ely with above 2 . 



2. Mandibles edentate or with a much shorter entodorsal tooth; first tergite petiolate, 



spiracles before middle; areolet usually wanting; thorax depressed, mesopleura 

 distinctly longer than high; head subquadrate; notauli complete or nearly bo. 



Xoridini. 

 Mandibles bidentate apically, teeth subequal or upper tooth longer 3. 



3. Occipital carina wanting or interrupted medially; mesoscutum and scutellum 



transversely rugose tliroughout; abdomen inserted rather high or propodeum, 

 occasionally far above insertion of hind coxae; first tergite with spiracles before 

 middle and shorter than or subequal to second, which is parallel-sided. Rhyssini. 

 Occipital carina complete; mesocutum and scutellum not transversely rugose, at 

 most the mesoscutum partially mgoluse 4. 



4. Abdomen distinctly compressed in apical third or half, (deeper than broad). 



Acoenitini. 

 Abdomen not distinctly compressed 5. 



5. Abdomen petiolate; head subcubical, swollen below antennae, not, or scarcely, 



narrowing behind eyes; eyes small and placed well forward, cepbalo-candad 

 length of posterior orbits longer than or subequal to that of eye; thorax and 

 propodeum depressed, the latter very long dorsally, short posteriorly; legs, 



especially the femora, stout; areolet wanting Odontomerini. 



Not entirely as above, though rarely agreeing with one or two ch aracters 6. 



6. Tergites, at least 2-4, with oblique furrows which converge anteriorly until they 



approximate in the dorsal middle 7. 



Tergites without such furrows 8. 



7. Tergites 1-5 in male, 1-4 in female, with apical transverse impressions which 



together with oblique impressions set off a median, transverse, sub-triangular 

 area; malar furrow present; first tergite with dorsal carinae short; scutellum 

 carinate laterally to apex; intercubitus nearly or quite twice as long second 



abscissa of cubitus; nervellus strongly inclivous Lycorini. 



First tergite without either oblique or transverse impressions, and with dorsal 

 carinae extending beyond middle; other tergites usually without transverse 

 apical furrows; ' scutellum not carinate laterally; intercubitus not nearly 

 twice as long as second abscissa of cubitus; nervellus reclivous, perpendicular, 

 or slightly inclivous Glyptini. 



• None of the North American Glyptini have the transverse furrows, but the South American genus 

 Zaglypto7norpha Viereck has them on tergites 2-5. This genus, however, has none of the other characters 

 of the Lycorini. 



