PTEROMALIDAE OF N.W. EUROPE 523 



segments five plus six ; funicular segments long, the sixth rather more than 



1 -5 times as long as broad ......... 24 



Antenna with combined length of pedicellus and flagellum 11 to 1-2 times the 

 breadth of the head ; clava as long as, or longer than, funicular segments 

 five plus six ; funicular segments often relatively shorter .... 60 



60 (59) Gaster oval, shorter than the thorax, less than twice as long as broad ; usually 



with a pale spot. Head and thorax mainly dull green, bronze-green, or 

 bronze ....... H. isarchus (Walker) (p. 527) 



Gaster oblong, hardly shorter than the thorax, at least twice as long as broad. 



Head and thorax usually mainly green or blue-green .... 61 



61 (60) Antenna with first funicular segment only slightly longer than the pedicellus ; 



proximal funicular segments only slightly longer than broad, distal segments 

 subquadrate ; combined length of pedicellus and flagellum about i-i times 

 the breadth of the head. Darker species : all femora infuscate, scape and 

 tegulae partly so ; gaster with a hardly visible pale spot. Fore wing with 

 postmarginal vein about as long as the marginal vein, the latter hardly 

 1 *5 times as long as the stigmal vein. Propodeum with plicae curved, 

 but only weakly sinuate posteriorly, at sides of nucha ; median area hardly 

 1 -5 times as broad as long . . . . H. sophax (Walker) (p. 560) 



- Antenna with first funicular segment distinctly longer than the pedicellus ; all 



funicular segments longer than broad, even the sixth at least slightly so ; 

 combined length of pedicellus and flagellum 1-15 to 12 times the breadth 

 of the head. Species usually brighter in colour : usually at most the hind 

 femora more or less infuscate ; scape usually, tegulae sometimes, wholly 

 testaceous ; gaster with a distinct pale spot ...... 62 



62 (61) Head in dorsal view with temples converging only slightly. Pronotal collar, 



medially, only one ninth as long as the mesoscutum or rather less, sharply 

 margined except at the sides ..... H. ortalus (Walker) 



(?= aureolas Thomson) (p. 535) 



- Head in dorsal view with temples converging quite strongly. Pronotal collar, 



medially, about one seventh as long as the mesoscutum or rather more, 

 weakly margined or immarginate ........ 63 



63 (62) Fore wing with postmarginal vein slightly shorter than the marginal vein 



H. fasciatus Thomson (p. 538) 



- Fore wing with postmarginal vein about as long as the marginal vein 



H.P helenomus sp. n. (p. 535) 



64 (55) Antennal scape (Text-fig. 421) with a small boss-like expansion on its front 



edge, just above the middle ; the scape slightly shorter than an eye and 

 hardly reaching the vertex . H. dolichurus Thomson (p. 533) 



- Antennal scape either lacking a boss-like expansion, or else as long as an eye 



and reaching distinctly above the vertex ...... 65 



65 (56) Front edge of antennal scape with a small boss near its apex. All femora 



usually yellow, the hind ones sometimes slightly infuscate. Antennal 

 flagellum testaceous or yellowish with darker incisures, sometimes also 

 darkened dorsally. Pale spot of gaster usually large H. grandis (Walker) (p. 528) 



- Front edge of antennal scape without a boss. Hind femora mainly black, fore 



and mid femora usually more or less infuscate. Antennal flagellum brown 



to blackish. Pale spot of gaster small or absent H. semotus (Walker) (p. 529) 



The PLATYPHILUS-Grovp 

 Habrocytus crassicornis (Zetterstedt) comb. n. 

 Pteromalus crassicornis Zetterstedt, 1838 : 424, ?. 



