PTEROMALIDAE OF N.W. EUROPE 713 



Antennae with pedicellus in dorsal view 2-2-2-5 times as long as broad. 

 Basal vein sometimes with more numerous hairs. Body sometimes more 

 obscurely coloured. Propodeum with panels of median area sometimes 

 smooth . . . . . . . . . . . .27 



27 (26) Propodeum with panels of median area smooth or having only traces of very 



weak sculpture. Basal vein of fore wing more or less pilose, at least in its 

 upper half. Head and thorax olive- or bronze-green. Antenna, Text-fig. 

 589 ......... apertus (Walker) (p. 730) 



Propodeum with panels of median area quite strongly reticulate, or obliquely 

 strigose-reticulate. Basal vein usually bare, occasionally with 1-2 hairs. 

 Head and thorax bronze or greenish bronze . . robustus (Walker) (p. 730) 



28 (11) Fore wing with distal third to half of basal cell pliose ; marginal vein only 



1-1-1-15 times as long as the stigmal vein ; postmarginal vein as long as, 

 or even a little longer than, the marginal vein . lepidus (Forster) (p. 734) 



Fore wing with basal cell, not counting the basal vein, usually bare, rarely 

 with 1-4 scattered hairs distally, in which case the marginal vein is at 

 least 1 '3 times as long as the stigmal vein ...... 29 



29 (28) Basal vein of fore wing with only 1-3 isolated hairs. Antennal flagellum 



rather stout ....... lonchaeae Boucek (p. 730) 



Basal vein pilose throughout. Antennal flagellum more slender (Text-fig. 593) 30 



30 (29) Propodeum with panels of median area shiny, smooth or virtually so, without 



a costula. Gaster sometimes more than twice as long as broad, sometimes 

 distinctly longer than head plus thorax . . . . . . .31 



Propodeum : either the panels of the median area are reticulate, or else a 

 costula is present. Gaster at most twice as long as broad ; slightly 

 shorter than, or at most as long as, head plus thorax . . . . 32 



31 (30) Gaster at most twice as long as broad, but usually somewhat less than twice, 



not or hardly longer than head plus thorax. Femora usually more or less 

 infuscate, tibiae occasionally so . . . helvipes (Walker) (p. 731) 

 Gaster 2-2-2-5 times as long as broad, at least very slightly longer than head 

 plus thorax. Femora fulvous to reddish ; tibiae pale. Antenna, Text- 

 fig- 593 fulvipes (Walker) (p. 733) 



32 (30) Propodeum with panels of median area reticulate and not very shiny, without 



a distinct costula. Postmarginal vein of fore wing as long as, or slightly 

 shorter than, the marginal vein .... pexatus (Walker) (p. 734) 

 Propodeum with panels of median area weakly sculptured and shiny, with a 

 distinct costula. Postmarginal vein of fore wing distinctly shorter than 

 the marginal vein ..... exilis (Forster) (see conifer, p. 722) 



33 (1) Fore wing with line of hairs on lower surface of costal cell distinctly broken in 



the middle, often widely so ; wing often with a fuscous discal cloud 



campestris (Walker) (p. 735) 

 Fore wing with line of hairs on lower surface of costal cell complete ; wing 



immaculate ....... inops (Walker) (p. 735) 



(Males) 



1 Antennae with flagellum somewhat flattened, fusiform, broadest at about the 



middle of the funicle and thence tapering to the tip of the clava ; first 

 segment of funicle subquadrate and about as long as the second segment, 

 segments 3-6 transverse, 4 nearly twice as broad as long ; combined length 

 of pedicellus and flagellum equal to breadth of head ; flagellum with rather 

 short and slightly outstanding whitish hairs ; antenna yellowish with the 

 clava brown, the pedicellus and middle of the flagellum sometimes slightly 

 brownish. Median area of propodeum irregularly strigose-reticulate, about 



