PTEROMALIDAE OF N.W. EUROPE 449 



Homoporus chalcidiphagus (Walsh and Riley) 

 (Text-fig. 285) 



Pteromalus tricolor Walker, 1836 : 190, [ex parte (excl. lectotype)]. 



Pteromalus Nypsius Walker, 1839 : 274, $, syn. n. 



Semiotellus chalcidiphagus Walsh & Riley, 1869 : 152, $ $. 



Homoporus crassinervis Thomson, 1878 : 68, $. 



Merisoporus crassinervis (Thomson) Masi, 1924a : 230, $. 



Merisoporus chalcidiphagus (Walsh & Riley) Gahan, 1933 : 104-109, q\ $• 



Homoporus chalcidiphagus (Walsh & Riley) ; Delucchi, 1957a : 407, 417, $ $. 



Type material. Pteromalus nypsius Walker. Syntypes, 2 $. LECTOTYPE 

 labelled " 38. 8. 13. 69 ". This name has priority over chalcidiphagus, but 

 the latter is well known and generally accepted. 



Semiotellus chalcidiphagus Walsh & Riley. Type, Canada, Ontario, Grimsby, 

 in U.S.N.M. (not seen by the writer). The species was redescribed and figured 

 by Gahan (1933). 



Homoporus crassinervis Thomson. Syntypes, 4 $. LECTOTYPE labelled 

 " Ar " [Arrie], also bearing A. Jansson's lectotype label. The species was 

 synonymized with chalcidiphagus by Gahan (1933 : 107-108) although he did not 

 see the type of crassinervis. 



Widely distributed in Europe, but apparently not very common ; North 

 Africa (Morocco) ; U.S.A. 



Biology. Peck (1963 : 652) lists as hosts the Cecidomyiid Phytophaga destructor 

 Say ; various Eurytomidae (Eurytoma and Tetramesa spp.) living in grasses ; and 

 the Torymid Ditropinotus aureoviridis Crawf. In north-western Europe imagines 

 appear July- August. 



Homoporus apharetus (Walker) 



Pteromalus Apharetus Walker, 1839 : 228, o*- 



Homoporus flaviscapus Thomson, 1878 : 69, <J ?• 



Phaenacra nubigera Forster, 1878 : 52, $ [ex parte]. 



Homoporus flaviscapus Thomson ; Delucchi, 1957a : 407, 416, $ $. 



Type material. Pteromalus apharetus Walker. Syntypes, 2 $. LECTOTYPE, 

 the first specimen, bearing a Waterhouse label. 



Homoporus flaviscapus Thomson. Syntypes, 5 specimens. LECTOTYPE $ 

 labelled " Bas " [Bastad] and " flaviscapus Ths ". 



H. flaviscapus Thomson was synonymized with P. apharetus Walker, on the basis 

 of information supplied by the writer, by Boucek (1965^ : 35). 



Britain, Sweden, Germany, Austria, Czechoslovakia, Moldavian S.S.R. 

 Not uncommon in Britain. 



Biology. Unknown. Imagines July- August. 



