PTEROMALIDAE OF N.W. EUROPE 617 



basal tergite, and the mesoscutum has wider-meshed reticulation and is 



more glittering. Femora often broadly infuscate basally . . . 10 



10 (9) Fore wing with basal vein bare or with one to four scattered hairs ; femora 



nearly always fulvous or red, rarely slightly infuscate basally. Gaster 

 (Text-fig. 487) 1-4 to 1-7 times as long as broad, at most as long as the 

 thorax ; distance from base of tergite eight to tip of gaster less than the 

 length of the basal tergite. Mesoscutum with close-meshed reticulation, 

 hence rather dull. Propodeum having well-marked spiracular sulci which are 

 often more or less costulate transversely ; plicae short, beginning at hind 

 margin of propodeum and curving outwards towards the spiracular sulci, 

 where they end. Antenna with fourth funicular segment quadrate or 

 hardly elongate. 



Antenna, Text-fig. 497 .... pulchripes (Walker) (p. 622) 



Either the basal vein of the fore wing has a regular row of 6 to 13 hairs ; or 

 else all the femora are more or less broadly infuscate proximally, the 

 gaster (Text-fig. 488) is relatively longer, with the combined length of 

 tergites eight and nine equal to or greater than the length of the basal 

 tergite, and the mesoscutum has wider-meshed reticulation and is more 

 glittering. Propodeum with spiracular sulci usually shallow, sometimes 

 nearly absent ; plicae often traceable to near the base of the propodeum, 

 their posterior portion nearly straight . . . . . . . 11 



11 (10) Antenna (Text-fig. 500) with fourth funicular segment slightly elongate, 



fifth quadrate ; combined length of pedicellus and flagellum equal to 

 breadth of head ; flagellum slender proximally, hardly stouter than the 

 pedicellus. Antennal scape reaching to middle, or at most to the top, of 

 median ocellus. Fore wing with basal vein bare or with up to nine hairs 



ultonicus Graham (p. 623) 



- Antenna (Text-fig. 499) with fourth funicular segment quadrate, or even very 



slightly transverse, fifth slightly transverse. Flagellum sometimes rather 

 stouter and the combined length of pedicellus and flagellum less than the 

 breadth of the head ; if not, then the basal vein of the fore wing has a more 

 regular row of 6 to 13 hairs ......... 12 



12 (11) Antenna with combined length of pedicellus and flagellum equal to breadth of 



head ......... agropyri Graham (p. 624) 



- Antenna (Text-fig. 499) with combined length of pedicellus and flagellum 



slightly to distinctly less than breadth of head deschampsiae Graham (p. 623) 



13 (6) All coxae mainly testaceous. Malar space short, only slightly more than one 



third the length of an eye. 



Anterior margin of clypeus curved slightly forwards. (Pakistan) 



murriensis Graham (p. 621) 

 At most the fore coxae partly pale. Malar space relatively longer. 



European species .......... 14 



14 (13) Anterior margin of clypeus curved forwards slightly ; head in dorsal view 



barely twice as broad as long ; marginal vein of fore wing fully 2-5 times as 



long as the stigmal vein ...... sp. indet. A. (p. 621) 



Anterior margin of clypeus truncate or shallowly emarginate ; head in dorsal 

 view at least slightly more than twice as broad as long ; marginal vein of 

 fore wing usually less than 2-5 times as long as the stigmal vein . . 15 



15 (14) Propodeum (Text-fig. 492) shiny, weakly sculptured to nearly smooth, short, its 



median length somewhat less than half that of the scutellum, its middle part 

 hardly produced caudad of the level of the hind edges of the supracoxal 

 flanges ; plicae absent or indicated at the hind margin only . . . 16 



- Propodeum (cf. Text-fig. 493) not so shiny, distinctly reticulate, relatively 



