310 M. W. R. de V. GRAHAM 



neither engraved nor raised ; mid lobe with numerous hairs, especially anteriorly ; notauli 

 deep, slightly curved. Scutellum about as long as the mesoscutum, slightly longer than broad, 

 with sculpture like that of the mesoscutum but slightly finer, with three to four pairs of bristles ; 

 frenum marked off by a fine line ; the scutello-axillar sutures converge only moderately, about 

 as in affinis sp. n. Axillae with sculpture like that of the scutellum. Dorsellum about half as 

 long as the frenum, shiny, smooth or weakly alutaceous. Propodeum short, medially nearly 

 as long as the frenum, and about one fifth the length of the scutellum, shiny and, including the 

 callus, virtually devoid of sculpture ; median carina absent or very fine ; plicae absent ; spir- 

 acles circular, separated by about half their diameter from the metanotum ; callus with three 

 to four bristles. Metapleuron shiny, weakly alutaceous. Mesepimeron shiny, weakly alutaceous, 

 distinctly marked off, about 2-5 times as long as broad ; mesepisternum with moderately fine, 

 delicate alutaceous sculpture, shiny, with a smooth triangular area dorsally ; mesosternnm 

 polished and nearly smooth, mesolcus distinctly impressed and nearly complete. Legs rather 

 short but not stout ; hind coxae about twice as long as broad, shiny, with delicate though not 

 very fine alutaceous sculpture, their dorsal surface with a row of hairs ; spur of mid tibia about 

 two thirds the length of the first tarsal segment. Fore wing practically twice as long as broad ; 

 costal cell somewhat narrow (length : breadth about 10 : 1), its lower surface sparsely haired, 

 its upper surface with a row of hairs extending over nearly the distal half ; basal cell, on upper- 

 side of wing, hairy over about its distal third ; speculum closed below, on the upperside of the 

 wing only moderate sized and not extending below the marginal vein ; disc rather thickly 

 haired ; marginal vein slightly longer than the postmarginal and 1 -8 to 1 -g times as long as the 

 stigmal vein ; the latter hardly curved, the stigma rather large, subrectangular, longer than 

 high, the length of the stigma is fully equal to the interval between its upper edge and the lower 

 edge of the postmarginal vein, or even slightly greater. 



Petiole strongly transverse. Gaster oblong, excluding the ovipositor sheaths as long as head 

 plus thorax, much narrower than the thorax, widening gradually from base to near its apex, 

 then narrowing suddenly ; basal tergite convex medially at the base, with a fovea on each side ; 

 disc sunken ; last tergite more or less compressed and projecting upwards ; ovipositor sheaths, 

 as seen in profile, exserted to a length equal to two thirds to three quarters that of the hind 

 tibia, slightly ascending ; gaster ventrally convex, keeled, hypopygium extending slightly less 

 than half way along. 



o\ Unknown. 



The $ of hirtulus resembles those of laticornis Walker and terminalis Walker in 

 most characters, especially in having the mesoscutum relatively densely haired, the 

 basal cell of the fore wing hairy except at its base, and the speculum closed below. 

 It differs from them in having the propodeal spiracles distinctly separated from the 

 metanotum, the thorax dorsally more tinged with greenish, the stigma of the fore 

 wing larger, the gaster rather more compressed, the ovipositor sheaths slightly 

 farther exserted, and the eyes less distinctly hairy. It also much resembles the 

 female of vagans Westwood, which differs in having the thorax more bronze, the 

 mesoscutum and scutellum more sparsely haired, the basal cell hairy in the distal 

 half only, and the speculum more or less open below. 



Holotype $. England : Berkshire, Wytham Wood, 1g.iv.1961, from Larix 

 decidua Mill (Graham), in Hope Department, University Museum, Oxford. 



Paratypes. England : Berkshire, Bagley Wood, 1 $, 28.iv.1g57 ; Wytham 

 Wood, 1 $, 7.V.1955, probably from Betula (Graham) ; Buckinghamshire, Hell 

 Coppice, near Oakley, 1 $, 8.V.1952, from foliage of Betula, 1 $, g.v.ig54, also from 

 Betula (Graham), in Graham collection. 



Biology. Unknown. 



