12 M. W. R. be V. GRAHAM 



broad, while both together are as long as the rest of the gaster (Mymaromma) 



MYMARIDAE (part) 



- Either the gaster has a petiole composed of one segment, which is sometimes 



inconspicuous ; or it is sessile ........ 2 



2 (1) Head (Text- fig. 7) with antennal toruli much nearer to the eyes than to each 



other, and separated by not more than their own diameter from the eyes ; 

 frons with an impressed transverse straight line just above the antennal 

 toruli ; from the ends of this line two other pairs of lines extend along the 

 orbits on to the vertex and face respectively. Nearly always macropterous, 

 with hind wing (Text-fig. 8) having a basal stalk which is composed solely 

 of the submarginal vein, the wing-lamina not extending to its base ; wing, 

 beyond the hamuli, nearly always linear with its front and hind edges 

 subparallel. Fore wing (Text-fig. 8) venation characteristic : marginal 

 vein relatively short, stigmal vein rudimentary, the tip of the latter most 

 often situated before the middle of the wing, rarely beyond it. Antennae 

 without true anelli. Tarsi four- or five-segmented. Body non-metallic 



MYMARIDAE 



Antennal toruli rarely nearer to the eyes than to each other, if so then the 

 frons lacks impressed lines running along the orbits and the transverse line, 

 if present, is usually not straight, whilst the structure of the fore and 

 hind wings is different, the antennae usually have one or more anelli, and 

 the body is often metallic. Tarsi sometimes with only three segments 3 



3 (2) Apterous forms, or brachypterous forms having the wings shortened, rudi- 



mentary, or (occasionally) represented by narrow filaments ... 4 



Forms having wings, except very rarely the hind wings, fully developed, 



sometimes narrow but never filamentous . . . . . . 10 



4 (3) Males only : species associated with figs (Ficus spp.). Body and appendages 



often very aberrant in structure ; apterous, or with wings represented by 

 filaments ; tarsi often heteromerous ; ocelli usually absent 



AGAONIDAE and some TORYMIDAE (SYCOPHAGINAE) 

 Males and females : species not associated with figs .... 5 



5 (4) Tarsi with three segments. Small to minute species, 0-3 to 1-4 mm. ; anten- 



nae with only five to eight segments and usually very short 



TRICHOGRAMMATIDAE (part) 

 Tarsi with four or five segments. Species often larger ; antennae often with 



a greater number of segments ........ 6 



6 (5) Tarsi with four segments EULOPHIDAE (part) 



- Tarsi with five segments ......... 7 



7 (6) Mid coxae inserted at or slightly in front of the middle of the mesepisternum 



(Text-fig. 9) ; mid tarsi thickened proximally, tapering distally, their first 

 segment, and often some of the following segments, with a double row of 

 short thick spines beneath ; mesepisternum (Text-fig. 9) convex, without 



a femoral groove ENCYRTIDAE (part) 



Mid coxae inserted at or near the hind end of the mesepisternum. Mid tarsi 

 with or without short thick spines beneath. Mesepisternum with or 

 without a femoral groove ......... 8 



8 (7) Mid tarsi thickened proximally, tapering distad, their first segment, and often 



some of the following segments, with a double row of short thick spines 

 beneath ; mesepisternum (Text-fig. 10) convex, without a true femoral 

 groove, though separated from the mesosternum by an impressed line or 

 suture ; mid coxae ventrally with a membranous area (Text-fig. 11, 

 membr.) at their bases EUPELMIDAE (part) 



