PTEROMALIDAE OF N.W. EUROPE 52I 



moderate angle ........... 54 



46 (45) Fore wing with speculum, on upper surface of wing, extending nearly or quite 



to the stigmal vein. Genae strongly compressed. Head in dorsal view 

 (Text-fig. 419) with temples converging only slightly. Antennal scape 

 reaching the vertex. Gaster with a distinct yellow spot. Propodeum with 

 plicae hardly extending on to sides of nucha, as in female, Text-fig. 375. 

 Antennae yellowish with pedicellus and flagellum more or less infuscate dor- 

 sally. Femora and tibiae yellow, the hind femora sometimes infuscate. 

 Mandibular formula 3.4 . . . . . H. cioni Thomson (p. 526) 



Fore wing with speculum, on upper surface of wing, not reaching the stigmal 

 vein, extending below the marginal vein for at most half the length of the 

 latter. Genae not strongly compressed. Either the head in dorsal view 

 has the temples (Text-fig. 420) converging quite strongly ; or else the anten- 

 nal scape does not reach the vertex. Gaster usually immaculate, with a 

 pale spot in some bedeguaris. Propodeal plicae usually extending on to 

 sides of nucha and often reaching its hind edge. Mandibular formula 3.4 



or 4-4 47 



47 (46) Antennal scape reaching slightly above the vertex. Legs, except coxae, 



yellow. Head and thorax bright or golden green. Antennal flagellum 

 rather slender ; all funicular segments, except sometimes the sixth, at least 

 slightly longer than broad. Mandibular formula 4.4 .... 



P. puparum (Linnaeus) (p. 489) 

 Antennal scape not or only just reaching the vertex. Legs with all femora 

 more or less infuscate. Head and thorax tending towards a dull blue or 

 blue-green. Antennal flagellum sometimes rather stouter, sometimes with 

 distal segments of funiclc not longer than broad ..... 48 



48 (47) Antennal toruli slightly nearer to anterior margin of clypeus than to median 



ocellus. Head in dorsal view with temples converging only slightly ; the 

 head 2 to 2-15 times as broad as long. Pronotal collar, medially, slightly 

 more than one fifth as long as mesoscutum. Fore wing with stigma rather 

 small, separated by 2-6 to 3 times its height from costal edge of wing. 

 Antennal flagellum usually testaceous with darker incisures, sometimes 

 infuscate dorsally. Mandibular formula 3.4 . H. vibulenus (Walker) (p. 525) 

 Antennal toruli about equidistant from anterior margin of clypeus and median 

 ocellus. Head in dorsal view normally with the temples converging more 

 strongly (as in Text-fig. 420), and rather more transverse. Pronotal collar, 

 medially, from one sixth to nearly one fifth as long as the mesoscutum. 

 Fore wing with stigma rather larger, separated by only 2 to 2-5 times its 

 height from costal edge of wing ........ 49 



49 (48) Mandibular formula 3.4. Scutellum moderately convex. Antenna with 



combined length of pedicellus and flagellum about equal to breadth of head ; 

 funicular segments variable, sometimes short as in venustus (see below), 

 sometimes with the first segment up to twice as long as broad and distinctly 

 longer than the pedicellus, and the sixth slightly longer than broad 



H. bedeguaris Thomson (p. 527) 



Mandibular formula 4.4. Scutellum rather weakly convex. Antenna with 



combined length of pedicellus and flagellum slightly less than breadth of 



head ; first funicular segment at most 1 -5 times as long as broad, not or 



only slightly longer than the pedicellus, sixth quadrate or slightly transverse 



P. venustus Walker (p. 491) 



50 (44) Antenna with combined length of pedicellus and flagellum only very slightly 



greater than breadth of head . . . . . . . .51 



- Antenna with combined length of pedicellus and flagellum distinctly greater 



