PTEROMALIDAE OF N.W. EUROPE 101 



Trigonoderus pulcher Walker 



Trigonoderus pulcher Walker, 1836a : 16, $. 



? Trigonoderus tristis Walker, 1836a : 17, ?. 



Trigonoderus contemptus Walker, 1836a : 22, $, syn. n. 



Trigonoderus Lichtensteini (Ratzeburg) Thomson, 1878 : 10 [ex parte]. 



? Trigonoderus sokanowskii ssp. pseudoprinceps Novitzky, 1955 : 31. 



Trigonoderus princeps Westwood ; Kerrich & Graham, 1957 : 287-293 [ex parte], 



Trigonoderus princeps Westwood ; Ferriere & Kerrich, 1958 : 27 [ex parte]. 



Type material. Trigonoderus pulcher Walker. Lectotype designated by Kerrich & 

 Graham (1957 : 290) and the species placed in synonymy with princeps Westwood 

 (ibid. : 287). I have re-examined the lectotype and now consider it to represent a 

 valid species. 



T. tristis Walker. Type female recognized by Kerrich & Graham (1957 : 290) and 

 the species placed in synonymy with princeps Westwood (ibid. : 287). On examining 

 the type again I think it may be a rather aberrant example of pulcher Walker. 



T. contemptus Walker. Type female recognized by Kerrich & Graham (1957 : 

 290), the species being then placed in synonymy with princeps Westwood (ibid. : 

 289). After re-examining the type female of contemptus I consider it to be the same 

 as pulcher Walker. 



Kerrich & Graham (1957 : 290-292) discussed some wing-characters by which 

 Novitzky had sought to divide princeps Westwood (s. lat.) into two species, but 

 found them to be too variable to provide a satisfactory criterion. Since then I have 

 re-examined all the material available, from which I conclude that two species 

 {princeps Westwood and pulcher Walker) may in fact be recognized, though the 

 characters which I use to separate them (see key to females) are somewhat different. 



Britain, Sweden, Czechoslovakia. 

 Biology. Unknown. Imagines May-June. 



Trigonoderus filatus Walker 



Trigonoderus filatus Walker, 1 836a : 1 7, ?. 

 ? Cleonymus occultus Forster, 1841 : 33, q\ 

 Cleonymus signatus Forster, 1841 : 34, 9- 

 Pteromalus Brandtii Ratzeburg, 1844a ; 188, $. 



Trigonoderus filatus Walker 

 Trigonoderus filatus Walker 

 Trigonoderus filatus Walker 



Novitzky, 1955 : 29. 



Kerrich & Graham, 1957 : 286. 



Ferriere & Kerrich, 1958 : 26, 27, q* ?. 



Type material. For designation of lectotype for filatus Walker see Kerrich & 

 Graham (1957 : 286). Pteromalus brandtii Ratzeburg (type now destroyed, but 

 previously seen by Novitzky) was synonymized with filatus by Novitzky (1955 : 29). 

 That author also stated (ibid.) that Cleonymus occultus Forster (type not found in 

 Vienna) might be another synonym ; also that Cleonymus signatus Forster (type 

 female in Vienna) was the same as filatus. 



Britain, France, Sweden, Germany. 



