PTEROMALIDAE OF N.W. EUROPE 447 



long as the first tarsal segment, the latter five to six times as long as thick 



gibbiscuta Thomson (p. 452) 

 Postmarginal vein distinctly shorter than the marginal vein. Malar space 

 from virtually half, to slightly more than half, the length of an eye. Scutel- 

 lum, as seen in profile, only moderately convex. Legs rather stouter ; 

 spur of mid tibia half or rather more than half as long as the first tarsal 

 segment, the latter 4 to 4-5 times as long as thick . . . . . 12 



12 (3,11) Antennae inserted well above level of ventral edge of eyes ; scape reaching 



level of vertex or slightly above it ; combined length of pedicellus and 

 flagellum about equal to breadth of head ; first funicular segment 1 -3 to 1 -6 

 times as long as broad, not or hardly shorter than the second segment, sixth 

 segment quadrate or slightly longer than broad. Malar space about half 

 the length of an eye ..... febriculosus (Girault) (p. 453) 

 - Antennae inserted only slightly above level of ventral edge of eyes ; scape 



not nearly reaching the median ocellus ; combined length of pedicellus 

 and flagellum distinctly less than breadth of head ; first funicular segment 

 at least slightly shorter and narrower than the second segment, usually 

 quadrate, occasionally a little longer than broad ; distal segments quadrate 

 to slightly transverse. Malar space slightly more than half the length of an 

 eye ........ fulviventris (Walker) (p. 454) 



13 (3) The two Central European species pulchripes Erdos (p. 456) and sashegyensis 



Erdos (p. 456) would run here. They need revision and might be only 

 forms of one variable species ; the differences noted by Delucchi (1957a : 

 404-405, 409) do not appear to work out very satisfactorily. 



Males 



1 Antennae with three anelli and five funicular segments ; combined length of 



pedicellus and flagellum slightly less than breadth of head ; flagellum sub- 

 clavate, clothed with short subdecumbent hairs ; funicular segments short. 

 Head and thorax golden to blue-green. [The two Central European species 

 pulchripes Erdos and sashegyensis Erdos would run here.] 

 Antennae with two anelli and six funicular segments ; combined length of 

 pedicellus and flagellum slightly to much greater than breadth of head ; 

 flagellum filiform, clothed with hairs whose length is at least half the breadth 

 of the segments that bear them and which stand out moderately to quite 

 strongly ; funicular segments often long. Head and thorax often more 

 obscurely coloured ........... 2 



2 (1) Fore wing with postmarginal vein at least slightly longer than the marginal vein, 



the latter slightly to rather conspicuously thickened ; wing often with a 

 fuscous cloud below the marginal vein. Pronotum as wide as the mesoscutum. 

 Both mandibles with three teeth. Gaster oval, much shorter than the thorax, 

 immaculate. Marginal vein of fore wing at most about 1-5 times as long as 

 the stigmal vein ........... 8 



Fore wing with postmarginal vein at most as long as, often shorter than, the 

 marginal vein ; the latter not thickened ; wing immaculate. Pronotum at 

 least slightly less wide than the mesoscutum. Both mandibles with four teeth, 

 except in luniger and subniger in which the left mandible has three teeth. 

 Gaster oblong-oval to oblong, nearly or about as long as the thorax, often with 

 a pale subbasal spot. Marginal vein of fore wing (except in destructor, subniger, 

 and some luniger) twice or rather more than twice as long as the stigmal vein 3 



3 (2) Antennae with combined length of pedicellus and flagellum about twice the 



breadth of the head ; flagellum very slender ; all funicular segments con- 

 spicuously elongate, the first 3-5 to 4 times, sixth 2-5 to 3 times, as long as 



