PTEROMALIDAE OF N.W. EUROPE 803 



have the postmarginal vein slightly longer than the stigmal vein. On the other 

 hand, in lophyrorum (Ruschka) the postmarginal vein is approximately equal in 

 length to, or even very slightly shorter than, the stigmal vein. 



In view of these differences I maintain lophyrorum as a valid species. 



Sweden, Germany, Czechoslovakia, U.S.S.R. ; Canada, U.S.A. 

 Biology. Ruschka's original material was bred from cocoons of Diprion (=Lophy- 

 rus pint (L.) (Hym., Diprionidae)). Imagines July-August. 



Tritneptis diprionis Gahan 



Tritneptis diprionis Gahan, 1938 : 214, 217, <$ ?. 

 Tritneptis diprionis Gahan ; Peck, 1963 : 670. 



Type material (not seen) from four localities in U.S.A., the type under no. 52891 

 in U.S.N.M. 



I refer to this species some males and females bred from cocoons of Neodiprion 

 sp. taken at Arnhem, Holland, by Prof. G. C. Varley, the parasites emerging i4.iii. 

 1952 ; also many males and females reared from cocoons of Neodiprion sertifer 

 (Geoffr.) at Ameibischl, Carinthia, Austria, ix.1961-v.1962, by K. Schedl (material 

 in BM(NH)). 



Holland, Austria ; Canada, U.S.A. 



Biology. The host records for diprionis in North America (see Peck, 1963 : 670) 

 include three species of Diprion, four species of Neodiprion, and two of the genus 

 Pikonema. 



Tritneptis sp. indet. 



Finland : Ta., Vanaja, females reared in 1952 (Mr. Erkki Valkeila). 



This species does not agree with any of those given in Gahan's key to the North 

 American species (1938 : 213-214) and is presumably undescribed. I think it 

 advisable, however, to defer describing it until the whole genus can be critically 

 revised. 



Tritneptis klugii (Ratzeburg) 



Pteromalus klugii Ratzeburg, 1844a : 198, $. 



Tritneptis klugii (Ratzeburg) Gahan, 1938 : 213, 214-216, £ $. 



Tritneptis klugii (Ratzeburg) ; Peck, 1963 : 671-673. 



Type material. Syntypes, Germany, Grand Duchy of Posen, 1841, from cocoons 

 of Nematus erichsonii, in Ratzeburg collection, Eberswalde, now presumed 

 destroyed. I accept the interpretation of klugii proposed by Gahan (1938) whose 

 supplementary notes have been used in my determinations. 



Britain (new record) : Scotland, Perthshire, Rannoch, 1 $, 3.^.1953 (Graham) ; 

 Sweden: Skane, Sjoholmen, 1 $, 31.vii.1959 (Graham); Germany, Canada, 

 U.S.A. 



