PTEROMALIDAE OF N.W. EUROPE 567 



Pteromalus semifascia Walker. Lectotype female designated by Graham (1956& : 



257)- 



Pteromalus mundus Walker. Syntypes, 2 $. LECTOTYPE, the first specimen, 

 bearing a Waterhouse label. It is a very small, and slightly aberrant, specimen. 



Pteromalus pronax Walker. One male, LECTOTYPE ; Waterhouse label. 



Pteromalus perditor Forster. Type male (not seen) in Naturhistorisches Museum, 

 Vienna ; it was examined by Delucchi who placed it in synonymy with semifascia 

 (1958a : 53). 



Pteromalus gallicus Ratzeburg. Types presumed destroyed. The species was 

 put in synonymy with semifascia by Graham (19566 : 257). 



Etroxys (Cecidostiba) truncata Thomson. Syntypes on 14 pins. LECTOTYPE, 

 a female labelled " Thn 5/7 " ; " truncata Ths " ; and " gallica Ratz. V. Delucchi 

 det.". 



Widely distributed in Europe. 



Biology. Reared from galls of Biorrhiza pallida (Oliv.). For details of its 

 biology see Askew (1961 : 65). Askew stated that rearing showed semifascia to be 

 bivoltine. I have captured imagines in the field from June to September 

 (inclusive). 



Cecidostiba (Cecidostiba) hilaris (Walker) comb. n. 

 (Text-fig. 316) 



Pteromalus hilaris Walker, 1836 : 489, $. 



Pteromalus leucopezus Ratzeburg, 1844a : 204, <$, syn. n. 



Pteromalus anomalicornis Forster, 1841 : 15, q\ 



Pteromalus Naubolus Walker, 1845 : 263, <J $. 



Pteromalus meconotus Ratzeburg, 1848 : 206, $. 



Cecidostiba rugifrons Thomson, 1878 : 92, q* $. 



Pteromalus leucopygus [sic] Ratzeburg ; Dalla Torre, 1898 : 133. 



Cecidostiba leucopezus (Ratzeburg) Mayr, 1903 : 395-396. 



Cecidostiba leucopyga [sic] Ratzeburg ; Nikol'skaya, 1952 : 227. 



Cecidostiba leucopeza (Ratzeburg) ; Erdos, 1953 : 228, <$ $. 



Cecidostiba leucopeza (Ratzeburg) ; Graham, 19566 : 256. 



Cecidostiba leucopeza (Ratzeburg) ; Delucchi, 1957 : 151, 152-153, $ $. 



Cecidostiba leucopeza (Ratzeburg) ; Askew, 1961 : 64-65, <$ $. 



Type material. Pteromalus hilaris Walker. Syntypes, 3 females. LECTO- 

 TYPE, the first specimen, bearing a Waterhouse label ; it is a dwarf. 



Pteromalus leucopezus Ratzeburg. Types presumed lost. The interpretation of 

 Erdos (1953 : 228) was followed by me in my paper of 19566 and has been accepted 

 by Askew. Ratzeburg's original description does not convey very much but fits 

 the present species. Later (1848 : 204) he described the female and referred to its 

 extremely short propodeum ; this is very characteristic and leaves no doubt 

 regarding the identity of his female, this could not have been adana, which has a 

 longer propodeum. Delucchi (1957 : 153) proposed the lectotype of Cecidostiba 

 rugifrons Thomson as neotype of leucopezus Ratzeburg (but did not publish a valid 

 lectotype selection for the former). 



