220 M. W. R. de V. GRAHAM 



scape slightly expanded above the middle, its outer surface with a shiny boss 

 which extends fully half way down ; hairs of flagellum standing out only 

 very slightly. 



Head, Text-fig. 174 . . . . . gibbus (Walker) (p. 220) 



- Fore wing with stigma at least slightly longer than high, often tending to be 



subtriangular in shape. Smaller species, at most 2-5 mm. Scutellar frenum 

 less uniformly sculptured and often with some distinct longitudinal carinulae 7 



7 (6) Antenna with hairs of flagellum standing out at angle of about 45 ; external 

 surface of scape with a relatively indistinct boss which extends less than half 

 way down. Gastral petiole at most about 1 -5 times as long as broad. Fore 

 wing with speculum represented by a (sometimes narrow) bare line just 

 outside the basal vein ; stigma tending to be subtriangular in shape 



groschkei Delucchi (p. 221) 



- Antenna with hairs of flagellum standing out only slightly ; external surface 



of scape with a distinct boss which extends about half-way down. Gastral 

 petiole i-6 to 2 times as long as broad. Fore wing with speculum absent ; 

 stigma subrectangular in shape .... Itniniatus Delucchi (p. 225) 



Stictomischus longiventris Thomson 



Stictomischus longiventris Thomson, 1876a : 237, $. 



Stictomischus longiventris Thomson ; Delucchi, 1955 : 77, 79, 81, $. 



Type material. There are 8 specimens in Thomson's collection but only one bears 

 the correct locality-data. This specimen is designated LECTOTYPE ; it is labelled 

 " Sm Bhn " [Smaland, Boheman] and (in Thomson's handwriting) " longiven=tris 

 Ths ". The male is unknown. 



Sweden, Germany ; ? Austria. 

 Biology. Unknown. 



Stictomischus scaposus Thomson 



Stictomischus scaposus Thomson, 1876a : 235, <$ $. 



Stictomischus scaposus Thomson ; Delucchi, 1955 : 78, 86-88, <$ $. 



Syntypes, 5 specimens. LECTOTYPE, a female labelled " Scan camp " and 

 " scaposus Ths ". Thomson published no locality for scaposus but in his own hand- 

 copy of his " Hymenoptera Scan dina viae " he wrote against scaposus a pencilled 

 note : " Sallsynt, funnen i Skane vid Lindholmen Yddinge och in Smaland ". 



Britain, Ireland, Sweden, Germany, Austria, Rumania, U.S.S.R. Not 

 uncommon in the British Isles ; I sweep it most often from foliage of bracken 

 (Pteridium aquilinum L.). 



Biology. Reared in England as parasite of Phytobia (=Dizygomyza) hilar ella 

 (Zett.) (R. R. Askew) ; this fly mines the fronds of Pteridium and other ferns. 



Stictomischus gibbus (Walker) 



Miscogaster gibba Walker, 1833 : 459, $. 

 Chrysolampus sublaevis Forster, 1841 : 37, 5*. 



