PTEROMALIDAE OF N.W. EUROPE 667 



Mesopolobus jucundus (Walker) 

 (Text-fig. 528) 



Eutelus jucundus Walker, 1834 : 358, <£. 



Eutelus flavipes Walker, 1834 : 3^4, ?, [ex parte]. 



Eutelus {Platytevmus) simplex Thomson, 1878 : 221, £ $. 



Mesopolobus jucundus (Walker) Graham, 1957a 1 : 221. 



Mesopolobus jucundus (Walker) ; v. Rosen, 1958 : 212, <$ $. 



Mesopolobus jucundus (Walker) ; v. Rosen, 1960a : 28, (J $. 



Type material. For synonymy and designation of lectotypes, see Graham 

 (1957^)- 



Widely distributed (probably the whole of Europe). 



Biology. Similar to that of fasciiventris ; see Askew (19616 : 163-165) for 

 detailed information. According to Askew jucundus shows a- preference for the 

 larger leaf-galls, and bud-galls. Bivoltine : adults Apr.-Nov. A species which is 

 morphologically indistinguishable from jucundus has been found associated with the 

 gall of Diplolepis rosae L. (see Askew, 19616 : 160). 



Mesopolobus pseudofuscipes v. Rosen 



Mesopolobus pseudofuscipes v. Rosen, 1958a : 51-54, 6" $. 

 Mesopolobus pseudofuscipes v. Rosen, 1960a : 35, cJ $. 



Type material. Type $, Sweden, Halland, Enslov, 29. v. 1954 (H. Andersson), in 

 Universitetets Zoologiska Institutionen, Lund. 



Sweden, Austria. 



Biology. Reared from galls of Rhabdophaga dubiosa Kieff. and R. salicis (Schr.) 

 on Salix aurita L. (von Rosen, 1958 : 52-53). 



Mesopolobus rhabdophagae (Graham) 

 (Text-figs. 539-54L 545) 



Platymesopus rhabdophagae Graham, 1957a" : 227-228, <$ $. 

 Mesopolobus rhabdophagae (Graham) v. Rosen, 1958 : 217. 



Type material. Holotype $, England : Berkshire, Wallingford, i.vii.1938, in 

 Hope Department, University Museum, Oxford. 



Britain, Sweden, Central Europe. 



Biology. Reared from Rhabdophaga salicis (Schrank) in Britain (see Graham, 

 1957^ : 228). Imagines July-Aug. 



Mesopolobus maculicornis (Giraud) 



Pteromalus maculicornis Giraud, 1863a : 1303, $ $. 



Mesopolobus maculicornis (Giraud) v. Rosen, 1958 : 217-218, $ $. 



Mesopolobus maculicornis (Giraud) ; v. Rosen, 1960a : 30, <$ $. 



