686 M. W. R. de V. GRAHAM 



in inornatus, their reticulation a little less strong ; mesoscutum without piliferous punctures, 

 its hairs arising from minute tubercles ; the mesoscutum of inornatus has some shallow piliferous 

 punctures. Fore wing with veins relatively thin ; marginal vein shorter than in inornatus, 

 1 35 to i -4 times, instead of i -65 to 1 -a times, as long as the stigmal vein ; postmarginal vein 

 at most slightly longer than the marginal vein, 12 to 1-3 times as long in inornatus ; upper 

 surface of costal cell with a row of four to six hairs at its apex ; basal vein pilose, basal cell with 

 a few (up to nine) scattered hairs in its distal quarter ; disc of wing, beyond the speculum, 

 thickly haired. Mid tibia not expanded, about 8-5 times as long as broad ; its apical spur 

 distinctly longer than the maximum breadth of the tibia, hardly longer in inornatus. 



Gaster oval, somewhat longer than the thorax but hardly as long as head plus thorax, as 

 broad as the latter, 1-4 to i-6 times as long as broad, pointed apically but not acute, its sides 

 converging at about a right angle ; last tergite short, hardly as long as the preceding one, 

 somewhat shorter than its basal breadth. 



o*. Differs from the female as follows :- 



Malar space slightly less than half the length of an eye. Eyes separated by 1 -4 to 1 -45 times 

 their own length. Antenna (Text-fig. 557) with scape somewhat shorter than an eye, though 

 reaching to the level of the vertex, or even slightly above it, its outer aspect not entirely reticu- 

 late but having a narrow shiny boss extending over about the distal third ; pedicellus shorter ; 

 flagellum filiform or virtually so ; combined length of pedicellus and flagellum slightly greater 

 than breadth of head ; first funicular segment nearly or quite as long as the pedicellus and 

 1-3 to i-6 times as long as broad, following segments decreasing in length, the sixth about 

 quadrate ; clava not broader than the funicle, tapering ; flagellum with long outstanding 

 hairs. Fore wing with marginal vein only 1-2 to 1-3 times as long as the stigmal vein. Legs 

 with mid tibia neither expanded nor flattened, 8 to 8-5 times as long as its maximum breadth ; 

 length of mid tibial spur fully as great as, or slightly greater than, the breadth of the tibia ; 

 mid tarsi neither expanded not flattened. Gaster oblong, nearly as long as but somewhat 

 narrower than the thorax, with a ventral plica. 



The male differs from that of inornatus (Walker) most obviously in the characters 

 of the mid legs and fore wing (see key). It also differs from it in having the head 

 rather more transverse, 2-15-2-2 times as broad as long in dorsal view ; about 

 twice as broad as long in inornatus ; eyes more widely separated, in inornatus 

 separated by only about 1 -2 times their own length ; antennal scape with a shorter 

 shiny boss, extending hardly more than one third down the scape, as against half way 

 down in inornatus ; flagellum filiform or nearly so, blackish, in inornatus slightly 

 clavate, brown or testaceous. The spur of the mid tibia in inornatus is distinctly 

 shorter than the maximum breadth of the tibia, but in kptomerus sp. n. it is relatively 

 longer. 



Holotype $. Scotland : Inverness-shire, Isle of Rhum, 31.viii.1961, beaten 

 from foliage of birch (Betula pubescens Ehrh.) (Graham), in Hope Department, 

 University Museum, Oxford. 



Paratypes. Same data as holotype, 1 $, 29.viii.1961, in Graham collection. 



Ireland : Co. Wicklow, Glending, 2 <$, 19.viii.1954, swept from herbage in a 

 deciduous wood (Graham), in Graham collection. 



Sweden : Narke, Orebro district, 1 $, 25.vii.1953 (A. Jansson), in collection of 

 the late Dr. A. Jansson. 



Czechoslovakia : Bohemia, Bfehyne near Doksy, 19 $, 3 <$, 8.x. 1957 (Boucek), 

 in Boucek collection. 



Biology. Unknown. 



