PTEROMALIDAE OF N.W. EUROPE 823 



The species is virtually cosmopolitan. 



Biology. Reared as a parasite of Musca domestica L. (Dipt., Muscidae) ; in 

 America also from Phormia regina (Mg.) and Chrysomyia macellaria (F.) (Dipt., 

 Calliphoridae) ; see Peck (1963). Imagines (in Britain) Aug.-Sept. 



DIMACHUS Thomson 



Dimachus sgen. Dimachus Thomson, 1878 : 50, 52. Type-species : Pteromalus discolor 



Walker, 1836, by monotypy. 

 Dimachus Thomson ; Ashmead, 1904 : 276. 

 Dimachus Thomson ; Schmiedeknecht, 1909 : 284, 285, 287. 

 Dimachus Thomson ; Peck et al., 1964 : 47. 



Dimachus discolor (Walker) 



? Pteromalus Cingolum Nees, 1834 : 95, £. 

 Pteromalus discolor Walker, 1836 : 473, $. 

 Pteromalus Emathion Walker, 1839 : 243, $, syn. n. 

 Pteromalus Drcpanon Walker, 1848 : 124, 188, $, syn. n. 

 Dimachus discolor (Walker) Thomson, 1878 : 52-53, <$ ?. 



Type material. Pteromalus cingulum Nees. Type destroyed. The description 

 suggests the $ of Dimachus discolor. 



Pteromalus discolor Walker. One female, LECTOTYPE ; Waterhouse label. 



Pteromalus Emathion Walker. Syntypes, 3^. LECTOTYPE labelled "38.7.12. 

 208." 



Pteromalus drepanon Walker. One <$, LECTOTYPE. 



Britain, Ireland, Sweden, Czechoslovakia ; but probably more widely 

 distributed in Europe. 



Biology. A female was captured on 23. vi. 1952, at Henley, Oxfordshire (Mr. G. R. 

 Gradwell), who believed that the specimen may have emerged from Stegobium 

 paniceum L. (Col., Anobiidae). Imagines June-August. 



LARIOPHAGUS Crawford 

 Lariophagus Crawford, 1909a : 52. Type-species : L. texanus Crawford, by monotypy. 



Lariophagus Crawford 

 Lariophagus Crawford 

 Lariophagus Crawford 

 Lariophagus Crawford 

 Lariophagus Crawford 

 Lariophagus Crawford 



Kurdjumov, 1913 : 8, 15-16, [ex parte]. 

 Waterston, 1921 : 13-19. 

 Nikol'skaya, 1952 : 229. 

 Peck, 1963 : 690. 

 Peck et al., 1964 : 56. 

 Boucek, 19655 : 20-22. 



Kurdjumov (1913 : 15-16) recognized that Lariophagus occurred in Europe ; 

 but he placed in it not only distinguendus Forster and puncticollis Moller, but also 

 some other species that do not belong to it. Waterston (1921) gave some useful 

 notes on the genus. Boucek (1965c) described a new European species. 



