PTEROMALIDAE OF N.W. EUROPE 415 



Pteromalus azureus Ratzeburg (1844a : 203) has sometimes been regarded as being 

 identical with Rhopalicus brevicornis Thomson but Szczepahski (i960 : 411, 416) 

 maintained that this view could not be correct. I agree with his opinion ; moreover 

 I consider that azureus is recognizable as a valid species of the genus Metacolus (see 

 below) . 



Rhopalicus guttatus (Ratzeburg) 



Ichneumon {Pteromalus) guttatus Ratzeburg, 1844 : 29, pi. 8, fig. 5, $. 

 Pteromalus guttatus Ratzeburg, 1844a : 188, pi. 8, fig. 5, $. 

 Rhopalicus guttatus (Ratzeburg) Thomson, 1878 : 43, $. 

 Rhopalicus guttatus (Ratzeburg) ; Ferriere, 1948 : 519, 521, $. 

 Rhopalicus guttatus (Ratzeburg) ; Hedqvist, 1963 : 71, 82-83, $. 



Type material. Syntypes presumed destroyed. The identity of the species, 

 however, is perfectly clear from Ratzeburg's description and figure, particularly that 

 in Die Forst-Insecten, vol. 3, which in the copies I have seen is coloured. If it is 

 considered necessary to erect a neotype at some stage, one could be selected with 

 advantage from the material of Thomson, the first reviser. 



Britain, Germany, Sweden, Czechoslovakia. 



Biology. Reared in Sweden by Hedqvist from Pissodes validirostris Gyll. (Col., 

 Curculionidae) ; also from other species of that genus (Hedqvist, 1963). Imagines 

 July-Sept. 



Most females of guttatus have a characteristic fuscous spot on the fore wing, just 

 below the parastigma ; occasionally this spot is absent (Ratzeburg himself (1852 : 

 236) noted such a variation). 



ACROCORMUS Forster 



Acrocormus Forster, 1856 : 66, 70, 71. Type-species : A. semifasciatus Thomson, by subsequent 

 reference. 



Acrocormus Forster 

 Acrocormus Forster 

 Acrocormus Forster 

 Acrocormus Forster 

 Acrocormus Forster 

 Acrocormus Forster 



Thomson, 1878 : 32, 34. 



Schmiedeknecht, 1909 : 155, 157, 165 [ex parte]. 



Ferriere, 1948 : 524. 



Nikol'skaya, 1952 : 211 -2 12. 



Hedqvist, 1963 : 107-109. 



Peck et al., 1964 : 44. 



Only one European species is known : 



Acrocormus semifasciatus Thomson 



Acrocormus semifasciatus Thomson, 1878 : 34, $ $. 

 Acrocormus semifasciatus Thomson ; Ferriere, 1948 : 524, o* ?. 

 Acrocormus semifasciatus Thomson ; Hedqvist, 1963 : 107-109, $ $. 



Type material. LECTOTYPE $ (Lapland, Boheman) in Thomson coll., selected 

 by Delucchi and validated by Hedqvist (1963 : 109). 



