PTEROMALIDAE OF N.W. EUROPE 711 



1 -5 times as long as broad or hardly more ...... 29 



Either the marginal vein is 1-75-1-9 times as long as the stigmal vein ; or else 



the thorax is slender, 1-65-1-7 times as long as broad . . . . 15 



15 (14) Head in dorsal view (Text-fig. 586) only 2-2-05 times as broad as long, at 



most i-i times as broad as the mesoscutum. Fore wing usually with a 

 fuscous cloud surrounding the stigma ; marginal vein 1-4-1-75 times as 

 long as the stigmal vein. Legs relatively dark, the femora mainly blackish, 

 the tibiae often darkened. Dorsal surface of hind coxae rather densely 

 hairy, the hairs extending nearly to their bases. Median area of propodeum 

 with fairly strong, obliquely strigose-reticulate sculpture 



gracilicornis (Zetterstedt) (p. 725) 

 Head in dorsal view (Text-fig. 587) 2-15-2-3 times as broad as long, 1-1-1-25 

 times as broad as the mesoscutum. Fore wing immaculate ; marginal 

 vein 1-75-1-9 times as long as the stigmal vein. Legs relatively paler, the 

 tibiae not darkened and the femora often pale. Dorsal surface of hind 

 coxae more sparsely pilose, the hairs not nearly extending to its base. 

 Median area of propodeum often weakly sculptured .... 16 



16 (15) Fore wing with basal vein with only 1-3 isolated hairs ; basal cell open below 



throughout. Legs, except coxae, reddish or fulvous. Gaster not longer 



than head plus thorax ...... tenellus (Walker) (p. 723) 



Fore wing with basal vein pilose throughout ; usually also the basal cell is 

 closed below in its apical part. Legs sometimes having the femora 

 darkened. Gaster usually longer than head plus thorax . . . . 17 



17 (16) Gaster very elongate and acuminate, about twice as long as the thorax ; 



last tergite 1-7-2 times as long as its basal breadth ; penultimate tergite 

 as long as, or even very slightly longer than, its basal breadth. 

 Stigma of fore wing a little larger than in bracteatus 



gynetelus (Walker) (p. 725) 

 Gaster less elongate, at most i-6 times as long as the thorax ; last tergite at 

 most 1-3 times as long as its basal breadth ; penultimate tergite at least 

 slightly shorter than its basal breadth . . . . . . . 18 



18 (17) Median area of propodeum 1-5-1-8 times as broad as long, fairly strongly 



sculptured, often with a costula more or less indicated. Gaster somewhat 

 longer than head plus thorax. Antenna, Text-fig. 591 



bracteatus (Walker) (p. 725) 

 Median area of propodeum at most 135 times as broad as long, relatively 

 more weakly sculptured, usually without a distinct costula. Gaster not 

 or hardly longer than head plus thorax . . . lucidus (Walker) (p. 726) 



19 (13) Gaster lanceolate, acuminate, 3-5-4 times as long as broad, nearly twice as 



long as the thorax. Antennal flagellum fusiform, stout, distinctly stouter 

 than the pedicellus. Basal vein of fore wing bare or virtually so. Propo- 

 deum with panels of median area shiny, weakly and irregularly sculptured 20 

 Gaster at most 3 times as long as broad, but usually less ; if as much as 3 

 times, then the antennal flagellum is slightly clavate, thinner proximally, 

 the first funicular segment only slightly stouter than the pedicellus . . 21 



20 (19) Marginal vein of fore wing 1-8-1-9 times as long as the stigmal vein. Seg- 



ments of antennal funicle with relatively few sensilla. Body coppery 

 bronze. (Madeira) .... cupreus Delucchi & Graham (p. 727) 

 Marginal vein 1-5-1-6 times as long as the stigmal vein. Segments of 

 antennal funicle with numerous sensilla. Body greenish. (Europe) 



acuminatus Delucchi & Graham (p. 727) 



21 (19) Gaster 2-5-3 times as long as broad, acuminate ; last tergite 1-3-1-5 times as 



long as its basal breadth. Antennal flagellum rather slender proximally, 



