PTEROMALIDAE OF N.W. EUROPE 589 



Holcaeus varro (Walker) comb. n. 

 (Text-figs. 438, 439) 

 Pteromalus Varro Walker, 1839c : 233, $. 



Type material. One male, LECTOTYPE (possibly holotype) in Greville coll., 

 Edinburgh, labelled " Pteromal. Varro W. n. sp. Fide Wk. Edinb." and " Greville 

 I 936-5o. 292 ". 



Britain : England [new records] : Berkshire, Bagley Wood, 1 $, 4. v. 1957, 1 $, 

 21.vii.1957 ; Buckinghamshire, Hell Coppice, near Oakley, 1 <3\ 1 $, 12.viii.1960 

 (Graham). Scotland : near Edinburgh (Walker, 1839c : 233). 



Biology. Unknown. Imagines May-Sept. ; but the species is uncommon. 



Holcaeus stylatus sp. n. 



(Text-figs. 436, 437) 



$. Head bronze, the face in one specimen greenish. Thorax black, the mesoscutum, axillae 

 and scutellum brassy green, the propodeum tending more towards bluish, remainder of thorax 

 with weak metallic tints. Gaster fuscous or black with weak metallic reflections ; the petiole, 

 proximal part of venter more or less, and about the proximal half of the last tergite, reddish 

 testaceous. Mandibles red with blackish teeth. Antennal scape testaceous, slightly darker 

 at the apex ; rest of antenna blackish. Legs testaceous ; coxae sometimes darkened basally 

 and the hind coxa metallic-tinged ; pretarsus and claws brown. Tegulae and wing- venation 

 testaceous ; wings subhyaline. Length 3-6 to 4-45 mm. 



Head in dorsal view (Text-fig. 437) twice or hardly more than twice as broad as its maximum 

 length ; temples converging moderately strongly, relatively long, about one quarter to one 

 fifth the length of the eyes ; vertex with a strong ridge behind the ocelli, extending laterally 

 as far as the upper part of the temples. Antenna with combined length of pedicellus and 

 flagellum about 1-5 times the breadth of the head ; flagellum similar to that shown in Text-fig. 

 439, but with the funicular segments slightly shorter, the sixth very slightly longer than broad. 



Pronotum like that of stenogaster (cf. Text-fig. 441) in outline ; collar sharply margined 

 throughout, the carina quite strongly raised. Propodeum short, its median length about one 

 third that of the scutellum ; plicae sharp in the posterior half of the sclerite. Fore wing with 

 basal vein pilose, basal cell completely closed below by a line of hairs on the cubital vein ; specu- 

 lum open below ; marginal vein 2-2 to 2-3 times as long as the stigmal vein ; postmarginal vein 

 equal in length to the marginal. 



Gaster (Text-fig. 436) elongate, 2-2 to 2-4 times as long as the thorax, but much narrower 

 than the latter ; last tergite strongly compressed almost from its base, thus appearing linear, 

 the length of this tergite is nearly or quite one third that of the whole gaster ; ovipositor 

 sheaths distinctly exserted. 



cJ. Not definitely associated. I have two £<$ which may belong to this species ; 

 the characters which distinguish them from males of stenogaster are noted in the 

 key to males. 



Holotype $. England : Berkshire, Wytham Wood, 2.viii.i958 (Graham), in 

 Hope Department, University Museum, Oxford. 



Paratypes. England : Berkshire, Wytham Wood, 2 $, 2.VL1962, 19.vii.1964 

 (Boucek) ; Oxfordshire, Chiltern Hills at Swyncombe Down, 1 $, 3.VL1956 (Graham) ; 

 Yorkshire, V.C.64, Malham Tarn, 1 §, 9.viii.i956 (W. D. Hincks). 



