PTEROMALIDAE OF N.W. EUROPE 551 



as the mesoscutum, rather coarsely reticulate in the middle, more finely at the sides ; front 

 edge very abrupt, sometimes weakly and irregularly margined in the middle. Mesoscutum 

 about i-6 times as broad as long, finely reticulate, rather more coarsely on the disc. Scutellum 

 hardly longer than broad, finely reticulate, the frenum hardly more coarsely than the rest. 

 Propodeum somewhat more than one third as long as the scutellum ; median area 1 -8 to 2 

 times as broad as long, its panels not very shiny, very finely and fairly uniformly reticulate, 

 with some longitudinal carinulae at the base ; median carina complete but usually not very 

 strong ; costula subobsolete ; plicae traceable throughout but only sharp posteriorly where 

 they converge strongly on the sides of the nucha ; nucha about one quarter as long as the 

 median area, delicately transversely strigose-reticulate, separated from the median area by a 

 transverse impression which has some longitudinal costulae ; spiracles long-oval, nearly touch- 

 ing the metanotum ; spiracular sulci distinct ; callus alutaceous, not very shiny, rather sparsely 

 pilose. Postspiracular sclerite and mesepisternum as in albipennis. Mesepimeron more coarsely 

 reticulate than the mesepisternum. Metapleuron somewhat shiny, finely reticulate. Fore 

 wing with upper surface of costal cell bare, lower surface with the row of hairs usually widely 

 broken, but complete in one female ; basal cell bare, open below, basal vein bare ; speculum 

 open below, on upper surface of wing extending below marginal vein to fully half the length of 

 the latter ; wing beyond speculum not very thickly pilose, the area between postmarginal and 

 stigmal vein partly bare ; apical margin of wing ciliate ; marginal vein 1-5 to 1-75 times as 

 long as the stigmal vein ; postmarginal vein distinctly shorter than the marginal ; stigmal vein 

 slightly curved, stigma small and suboval. 



Gaster ovate, about as long and as broad as the thorax, not compressed, 1-5 to i-6 times as 

 long as broad, acute but not acuminate apically ; basal tergite occupying rather more than one 

 third the total length ; last tergite distinctly shorter than its basal breadth ; tips of ovipositor 

 sheaths just visible in dorsal view ; hypopygium extending about half way along the gaster. 



o". Unknown. 



The female is nearest to that of tibiellus (Zetterstedt), but differs in having the 

 antennal flagellum more clavate, more slender proximally, gaster shorter, marginal 

 vein longer relative to the stigmal vein. 



Holotype $. Sweden : Skane, Falsterbo, 27.vii.1959, swept from sand-dune 

 vegetation (Graham), in Hope Department, University Museum, Oxford. 

 Paratypes. Same data as holotype $, 6 $, in Graham collection. 



Biology. Unknown. 



Habrocytus tripolii sp. n. 



(Text-figs. 377, 402, 409) 



$. Head and thorax usually bright green to blue, sometimes with strong brassy or coppery 

 reflections ; occipital surface of head and neck of pronotum bluish black. Antennal scape 

 testaceous basally ; flagellum fuscous, sometimes obscurely testaceous beneath. Legs coloured 

 much as in albipennis (Walker). Tegulae black with a metallic tinge. Wings hyaline ; 

 venation fulvous to testaceous. Length 2-7 to 3-1 mm. 



Head in dorsal view (Text-fig. 409) shaped much as in albipennis ; POL 1-4 to 1-5 OOL. 

 Eyes separated by about 1-5 times their length. Sculpture of head, and structure of clypeus, 

 as in albipennis. Antennae (Text-fig. 402) inserted distinctly above level of ventral edge of 

 eyes ; scape slightly more than three quarters as long as an eye, reaching the level of the 

 middle or the top of the median ocellus ; combined length of pedicellus and flagellum distinctly 

 less than the breadth of the head ; pedicellus in profile about 1 -6 times as long as broad, slightly 

 shorter than or as long as the first funicular segment ; funicle rather slender, but slightly 



