374 M. W. R. de V. GRAHAM 



119 (118) The tip of the hypopygium, which is always clearly visible and sometimes 



rather prominent, is situated at two thirds to three quarters along the 

 gaster ; body obscurely bluish or greenish ; marginal vein of fore wing 

 about 1 -5 times as long as the stigmal vein . SPINTHERUS Thomson (p. 480) 



— Tip of hypopygium usually situated in or before the middle of the gaster ; if 



beyond this, then the body is bright green to blue, and the marginal vein 



of the fore wing is 1 -8 to 2 times as long as the stigmal vein . . . 120 



120 (119) Propodeum (Text-fig. 562) with spiracles small, circular to shortly oval, 



separated by nearly or quite their own length from the hind margin of the 

 metanotum ; propodeum short, medially one quarter to one third as long 

 as the scutellum, the surface including that of the shallow spiracular sulci 

 shiny, alutaceous to nearly smooth, plicae absent or sharp only posteriorly. 

 Pronotum without a collar, curving downwards right from its hind margin. 

 Anterior margin of clypeus truncate or slightly curved forwards . . 121 



— Either the propodeal spiracles are long-oval to sublinear and close to or nearly 



touching the metanotum ; or else the propodeum has a quite strongly 

 reticulate median area defined laterally by complete or nearly complete 

 plicae. Spiracular sulci usually with some transverse costulae, rarely 

 smooth. Pronotum nearly always with at least a short subhorizontal 

 collar. Anterior margin of clypeus at least slightly emarginate medially 122 



121 (120) Postmarginal vein of fore wing (Text-figs. 563, 564) slightly shorter than, or 



at most as long as, the marginal vein, straight or nearly so ; marginal 

 vein slightly thickened, seven to nine times as long as broad. Tibiae, 

 sometimes also femora, occasionally some of the coxae, yellow ; gaster 

 sometimes reddish basally .... STINOPLUS Thomson (p. 690) 



— Postmarginal vein of fore wing (Text-fig. 560) distinctly longer than the 



marginal vein, curved ; marginal vein thinner, about ten times as long as 

 its medial breadth. Tibiae at least slightly infuscate ; femora mainly, 

 coxae and gaster entirely dark . . LAMPO TERM A Graham (p. 687) 



122 (120) Antennal clava in profile asymmetrical, its upper edge strongly curved, its 



lower edge straighter ; marginal vein of fore wing 1 -8 to 2 times as long as 

 the stigmal vein ; propodeum more than half as long as the scutellum, its 

 spiracles shortly oval and not very near the metanotum. Postspiracular 

 sclerite broad, uniformly or nearly uniformly reticulate 



CHLOROCYTUS Graham (p. 611) 



— Antennal clava in profile symmetrical ; marginal vein usually less than 1 -8 



times as long as the stigmal vein, if more, then the propodeum has its 

 spiracles elongate and very close to the hind margin of the metanotum. 

 Postspiracular sclerite narrower, irregularly reticulate and often partly 



smooth HABROCYTUS Thomson (p. 494) 



and PTEROMALUS Swederus (p. 488) 



123 (112) Petiole of gaster about 1-5 times as long as broad, subcylindrical, with one or 



two hairs on each side, about two thirds as long as the propodeum, which is 

 more than half as long as the scutellum ; almost the whole dorsal surface 

 of the antennal clava clothed with whitish subadpressed micropilosity, the 

 clava appearing very asymmetrical in profile ISOCYRTUS Walker (p. 624) 



— Gastral petiole at least slightly transverse, subconical, without hairs laterally, 



less than half as long as the propodeum, unless the latter is itself very short. 

 Dorsal surface of antennal clava without whitish subadpressed micropilosity, 

 the clava itself usually not asymmetrical ...... 124 



124 (123) Clypeus without striae, entirely or mainly reticulate ; antennae inserted 



distinctly above level of ventral edge of eyes (some Dinotiscus) . . 205 



Either the clypeus is mainly to entirely striate ; or the antennae are inserted 



