712 M. W. R. de V. GRAHAM 



only slightly stouter than the pedicellus, subclavate. Basal vein of fore 

 wing bare. Dorsal surface of hind coxae virtually bare. Legs (except 

 coxae) testaceous. Propodeum with panels of median area shiny, weakly 

 sculptured or virtually smooth . . elongatus Delucchi & Graham (p. 727) 



- Either the gaster, and its last tergite, are relatively shorter ; or the antennal 



flagellum is stout and fusiform ; or the femora are mainly dark, and some- 

 times the tibiae are infuscate ; or the propodeum has the panels of its 

 median area distinctly sculptured . . . . . . . 22 



22 (21) Propodeum with panels of median area smooth or virtually so, polished. 



Antennal flagellum subclavate, slender, funicle proximally hardly stouter 

 than the pedicellus. Legs with femora mainly dark, the tibiae usually 

 more or less infuscate. Head and thorax dorsally usually bronze or 

 purplish bronze, sometimes dark green. Dorsal surface of hind coxae 

 virtually bare ....... inscitus (Walker) (p. 728) 



- Either the panels of the median area of the propodeum are distinctly sculp- 



tured ; or the antennal flagellum is stout, even proximally distinctly stouter 

 than the pedicellus, and subfusiform ; or the legs are paler, with the tibiae 

 pale and the femora not or hardly infuscate. Dorsal surface of hind coxae 

 often thickly pilose, rarely nearly bare ....... 23 



23 (22) Marginal vein of fore wing 1-65-2 times as long as the stigmal vein. Antennal 



flagellum subclavate ; funicle relatively slender proximally, only slightly 

 stouter than the pedicellus. Body bright green ; legs (except coxae) 

 fulvous. Dorsal surface of hind coxae with few hairs. Propodeal callus 

 somewhat sparsely pilose ; the hairs in its posterior half do not extend as 

 far as the plicae ....... tenellus (Walker) (p. 732) 



- Marginal vein 1 -3-1 -6 times as long as the stigmal vein ; if more than 1 -4 times, 



then the antennal flagellum is stout, the maximum breadth of the funicle 

 about 1-5 times the breadth of the pedicellus in dorsal view. Body often 

 more obscurely coloured ; legs sometimes darker. Dorsal surface of hind 

 coxae, and propodeal callus, moderately thickly to densely pilose ; in the 

 posterior part of the propodeum the hairs extend virtually to the plicae . 24 



24 (23) Fore wing with surface beyond the speculum densely pilose. Antenna (Text- 



fig. 592) with flagellum subclavate ; funicle proximally only slightly stouter 

 than the pedicellus ; the latter fully twice as long as broad in dorsal view. 

 Basal vein of fore wing bare. 



Dorsal surface of hind coxae, propodeal callus, and sides of basal tergite 

 of gaster densely pilose ..... rufinus (Walker) (p. 734) 



- Fore wing with surface beyond the speculum rather less densely pilose. 



Antennae with flagellum (Text-fig. 590) relatively stout, subfusiform ; 

 funicle proximally distinctly stouter than the pedicellus. Basal vein of 

 fore wing sometimes pilose ......... 25 



25 (24) Antennae (Text-fig. 590) with pedicellus in dorsal view at least slightly less 



than twice as long as broad. Basal vein of fore wing pilose throughout or 

 nearly throughout. Propodeum with panels of median area reticulate or 

 strigose-reticulate ...... perfectus (Walker) (p. 729) 



- Antennae with pedicellus in dorsal view 2-2-5 times as long as broad, if only 



twice as long as broad, then the basal vein of the fore wing is bare or nearly 



so ............. 26 



26 (25) Antennae with pedicellus in dorsal view only about twice as long as broad. 



Basal vein of fore wing bare, or with at most 2 hairs. Head and thorax 

 usually bright green, sometimes bronze-green. Propodeum with panels of 

 median area reticulate or strigose-reticulate, sometimes with a costula 



lonchaeae Boucek (p. 730) 



