316 



MEMOIES OP THE CARNEGIE MUSEUM 



7. Stigmal club, or knob, small ; front margin of pronotum rounded ; metanotum with a median carina, 



the lateral folds usually wanting or incomplete 8 



Stigmal club very large ; front margin of pronotum sharp ; metanotum with the lateral folds usually 

 complete Dinotus Forster (type D. Mdentulus F5rst.). 



8. Marginal vein at least tlirice as long as the stigmal vein ; clypeus anteriorly bidentate ; metathorax 



impuuctate, with a median carina Rhopalicus Forster (type Cleonymus maculifer Forst.). 



9. Clypeus at apex unarmed, either truncate, sinuate or incised 10 



Clypeus at apex armed with a median tooth. 



Thorax long, the pronotum with the front margin acute, laterally dilated, the metathorax with 

 short folds Stenomalus Thomson (type 8. crassicornis Thoms.). 



10. Stigmal vein ending in a small or median sized knob or club 11 



Stigmal vein ending in a large knob or club. 



Metathorax short and usually with a transverse carina ; clypeus incised at apex medially ; 



mesepisternum extending to the coxae Cecidostiba Thomson (type C. rugifrons Thorns.). 



Metathorax not short, usually with a fold and often also with a transverse carina ; head and 



thorax usually with rigid pubescence Csenacis Thomson (type C. grandidava Thorns.). 



11 . First joint of the flagellum always longer than the pedicel, or of an equal length. 12 



First joint of the flagellum always shorter than the pedicel 13 



12. Pronotum broad, the upper front margin rounded ; scutellum with a cross-furrow before apex ; 



abdomen conic-ovate, the second segment usually the largest, the third very short, segments 4-7 

 more than twice longer than the third, subequal, or very slightly increasing in length ; marginal vein 

 usually a little thicker at base than at apex. . Habrocytus Thomson (type Pteromalus albipennis Walk.). 



13. Pedicel as long as the ring-joints and the first two joints of the funicle united ; metathorax produced 



into a subglobose neck, the lateral folds distinct, the spiracles large, subreniform ; abdomen ovate. 



Mormoniella Ashmead, g. uov. (type M. brevicornis Ashm.). 



11. Front femora considerably swollen 15 



Front femora normal 20 



15. ■ Marginal vein in front wings thickened 16 



Marginal vein in front wings slender, 18 



16. Autenn£e with the ring-joints small, annular 17 



Antennse with the ring-joints large, not annular Pandelus Forster. 



17. Metanotum smooth, without folds ; stigmal and jiostmarginal veins short Metacolus Forster. 



Metanotum with folds and a median carina ; stigmal vein longer than the marginal. 



Khaphiteles Walker. 



18. Stigmal club or knob small 19 



Stigmal club very large ; front margin of pronotum acute Dinotus Forster. 



19. Marginal vein very long ; clypeus anteriorly bidentate Rhopalicus Foister. 



20. Clypeus at apex unarmed, truncate, sinuate or incised 21 



Clypeus at apex armed with a median tooth Stenomalus Thomson. 



21. Stigmal vein ending in a large knob 22 



Stigmal vein ending in a small or moderate sized club 23 



22. Clypeus at apex incised medially ; metathorax short and usually with a transverse carina. 



Cecidostiba Thomson. 



Clypeus not incised ; metathorax not short, usually Avith a fold and often also with a transverse carina ; 



head and thorax usually with rigid bristles Csenacis Thomson. 



