PTEROMALIDAE OF N.W. EUROPE 293 



male are broken, hence a complete description of this sex is postponed until fresh material is 

 available. 



G. cupreus appears to be most closely allied to G. fumipennis Walker, which 

 differs chiefly in the characters mentioned in the key. 



Holotype $. England : Surrey, Box Hill, bred 20. v. 1946 from Craneiobia corni 

 (Giraud) (Dipt., Cecidomyiidae) (M. Niblett), in Hope Department, University 

 Museum, Oxford. 



Paratypes. Same data as Holotype, 1 <$, 2 $ ; Northamptonshire, Salcey Forest, 

 1 $, 6.vii.i954 (Graham) ; Oxfordshire, Bald Hill, near Lewknor, 1 9, 8.VL1958 

 (Graham), in Hope Department and Graham collections. 



The VULGARIS-Grovp 

 Gastrancistrus vulgaris Walker 



Gastrancistrus vulgaris Walker, 1834 : 175, 6" ?• 



Type material. Syntypes, 4 <$. LECTOTYPE, the first specimen, bearing a 

 Waterhouse label, also one reading " Type C.F." [C. Ferriere]. 



Britain, not uncommon ; Sweden. 

 Biology. Unknown. Imagines May-July. 



Gastrancistrus coniferae sp. n. 



(Text-fig. 221) 



$. Body green to blue-green ; dorsal surface of gaster, except the greater part of the basal 

 tergite, bronze. Mandibles testaceous with darker teeth. Antennal scape testaceous, darker 

 distally ; pedicellus and flagellum fuscous. Coxae concolorous with the thorax, except the 

 fore coxae which are mainly to entirely testaceous ; legs otherwise testaceous with the femora 

 sometimes more or less infuscate, especially the hind ones ; mid and hind tibiae occasionally 

 brownish ; fifth segment of all tarsi brownish. Tegulae brownish testaceous. Wings slightly 

 greyish-tinged ; venation brownish testaceous to brown. Length 1-7 to 2-1 mm. 



Head about 1 -25 times as broad as the mesoscutum, in dorsal view 2-2 to 2-25 times as broad 

 as long ; temples very short and receding strongly ; ocelli in a triangle whose base is about 2-25 

 times its height, POL 1-2 to 1-35 OOL. In front view the head is transversely oval, about 1-4 

 times as broad as high, with the vertex moderately arched ; genae very slightly curved, con- 

 verging strongly towards the mouth. Eyes separated by nearly 1-5 times their own length. 

 Malar space somewhat more than one third the length of an eye. Breadth of oral fossa about 

 2-5 times the malar space. Clypeus slightly more than twice as broad as long, its anterior margin 

 produced but truncate or shallowly emarginate medially. Mandibles rather small, hardly 

 falcate, their outer tooth longest, the others decreasing regularly in length. Head, especially 

 face, shiny, with very fine reticulation which is not raised above the general surface and is, on 

 the lower part of the head, more or less engraved. Antennae (Text-fig. 221) with scape much 

 shorter than an eye, hardly four times as long as broad ; combined length of pedicellus and 

 flagellum equal to or slightly greater than the breadth of the head ; pedicellus in profile about 

 1-7 times as long as broad, as long as or very slightly longer than the first funicular segment ; 

 flagellum moderately clavate ; funicle proximally very slightly stouter than the pedicellus, 



