826 M. W. R. de V. GRAHAM 



identified as puncticollis is certainly large (length about 2-5 mm.) ; but some other 

 specimens which seem to be otherwise typical distinguendus are just as large. 

 Ruschka (1921 : 463) synonymized puncticollis with distinguendus, stating (ibid. : 

 464-465) that he had seen the types of both in Vienna. It seems likely that puncti- 

 collis represents a large and robust form of distinguendus. 



Lariophagus fimbriatus Boucek 



Lariophagus fimbriatus Boucek, 1965c : 20, o* ?• 



Type material. Holotype $, Czechoslovakia, southern Slovakia, Pukanec 

 (between Levice and Banska Stiavnica), 31.vii.1955 (Dlabola), in Narodni Museum, 

 Prague (Cat. no. 26.005). 



Czechoslovakia, Moldavian S.S.R. 

 Biology. Unknown. 



Lariophagus sp. indet. 



Britain : unlocalized, one female in Dale collection, Hope Dept., University 

 Museum, Oxford. This species appears to be a true Lariophagus, but is remarkable 

 in having two distinct spurs on the hind tibia. 



HEMITRICHUS Thomson 



Dimachus subgen. Hemitrichus Thomson, 1878 : 50, 54. Type-species : H. rufipes Thomson, 



by monotypy. 

 Uriella Ashmead, 1896 : 221. Type-species U. rufipes Ashmead, by monotypy. 

 Hemitrichus Thomson ; Schmiedeknecht, 1909 : 284, 285, 287. 

 Hemitrichus Thomson ; Peck et al., 1964 : 46. 



Uriella was placed in synonymy with Hemitrichus by Gahan & Wallace (1950 : 97). 



Key to European Species 

 (Females) 



1 Gaster 2-2-5 times as long as broad, at most slightly longer than head plus thorax ; 

 last tergite not or hardly longer than its basal breadth. Marginal vein of fore wing 

 1 7-1 -75 times as long as the stigmal vein. Propodeum less constricted posteriorly, 

 the nucha therefore relatively less distinct . . . seniculus (Nees) (p. 827) 



- Gaster 2-8-3-3 times as long as broad, nearly or quite 1-5 times as long as head plus 

 thorax ; last tergite nearly or quite twice as long as its basal breadth. Marginal 

 vein of fore wing about i-8 times as long as the stigmal vein. Propodeum more 

 constricted posteriorly so that the nucha is relatively more distinct 



oxy gaster Boucek (p. 827) 



Other smaller difference between the females of these two species are given by 

 Boucek (19650 : 19). 



The male of oxygaster is unknown. 



