362 M. W. R. de V. GRAHAM 



Thorax obviously broader than high, only weakly arched dorsally. Head in 

 dorsal view strongly transverse, about 2-3 times as broad as its maximum 

 length, with temples extremely short, hardly one eighth as long as eyes 



PLATYPTEROMALVS Boucek (p. 737) 



51 (44) Dorsal surface of hind coxae more or less hairy proximally (Text-fig. 297). 



Basal tergite of gaster often more or less conspicuously hairy laterally ; 

 propodeal callus often densely pilose ....... 52 



- Dorsal surface of hind coxae bare in its basal half (Text-fig. 298). Basal 



tergite of gaster most often with few hairs ...... 59 



52 (51) Antennal clava, ventrally, with a line of micropilosity which extends nearly 



its whole length ; the sutures of the clava oblique as seen in profile. 

 Segments of funicle, except sometimes sixth, longer than broad, each with 

 sensilla arranged in at least two rows. Propodeum moderately long, 

 reticulate ; nucha not distinctly developed ; costula more or less indicated 



APELIOMA Delucchi (p. 582) 



- Antennal clava with only a small area of micropilosity on the ventral surface 



of its third segment ; sutures of the clava not oblique. Segments of 

 funicle often shorter, or with sensilla in one row. Propodeum often with 

 a well-developed nucha . . . . . . . . -53 



53 (52) Stigma of fore wing (see Text-fig. 324) large, often surrounded by a fuscous 



cloud ; nucha of propodeum not developed, represented only by a ridge, 

 or a transverse lunate strip which is defined anteriorly by a sharp edge and 

 is at most weakly aciculate. Clypeus reticulate, without or with at most 

 a few striae ........... 205 



- Stigma of fore wing smaller ; nucha of propodeum often developed. Clypeus 



often radiately strigose ......... 54 



54 (53) Marginal vein of fore wing slightly shorter than, or at most as long as, the 



stigmal vein ; hind tibia with two distinct spurs ; pronotal collar not 

 margined ; clypeus mainly reticulate, its anterior margin with two rounded 

 lobes between which there is a deep incision. Propodeal nucha represented 

 only by a transverse ridge. Disc of fore wing often infumate, or with two 

 fuscous clouds CAENOCREPIS Thomson (p. 429) 



- Marginal vein at least very slightly longer than the stigmal vein ; hind 



tibia with one spur ; pronotal collar often margined ; clypeus often 

 mainly to wholly striate, its anterior margin often shallowly emarginate ; 

 propodeum often with nucha developed ...... 55 



55 (54) Nucha of propodeum not developed, represented merely by a lunate strip 



which is tranversely aciculate or smooth, and defined anteriorly by a 

 sharp edge ; clypeus mainly reticulate, without or with at most weak traces 

 of striation, its anterior margin often incised medially, or bidentate. Pro- 

 podeum with at most about four hairs between the plica and the spiracular 

 sulcus. Both mandibles with three teeth ...... 205 



- Nucha of propodeum most often developed and reticulate, sometimes large, 



strongly reticulate, and not sharply defined anteriorly ; if poorly developed, 

 then the clypeus is mainly or entirely striate and its anterior margin is at 

 most weakly emarginate, or the propodeum has a conspicuous tuft of 

 whitish hairs between the plica and the spiracular sulcus. At least the 

 right mandible with four teeth ........ 56 



56 (55) Sides of propodeum extremely hairy, the pilosity extending over the whole 



callus, except just mesad of the spiracles, and supracoxal flange, also 

 encroaching upon the median area ; hind corners of propodeum dentate. 

 Basal tergite of gaster not conspicuously hairy laterally 



PEZILEPSIS Delucchi (p. 782) 



