PTEROMALIDAE OF N.W. EUROPE 165 



Pteromahis sophron Walker. One male, LECTOTYPE, bearing a Waterhouse 

 label ; it is clearly a Haliday specimen, mounted on a hexagonal card which is itself 

 gummed to a rectangular card. 



Halticoptera petiolata Thomson. Syntypes on 39 pins, a mixed series including 

 males and female of both cir cuius (Walker) and aenea (Walker). LECTOTYPE, a 

 maled labelled " L-d " [Lund] and " petiolata m.". 



Ferriere (1952) recorded a species under the name Halticoptera patellana Dalman 

 (citing aeneus Walker as a synonym) from the neighbourhood of Venice. According 

 to the lectotype of aeneus selected by Ferriere himself and which I have validated 

 above, that species is the same as patellana in his opinion. However, he gave no 

 reasons for his view, and I prefer to follow Thomson's (1876) interpretation of 

 patellana. Peck (1963 : 623) followed Ferriere's interpretation of patellana, although 

 most of the North American records which he cited under that name probably refer 

 to a different species (circulus Walker, q.v.). Thus the situation is very confused, 

 chiefly because hitherto no lectotypes have been validated for any of the species- 

 names involved. 



Europe (widely distributed), Canadian and U.S. records of aenea presumably 

 refer to circulus (Walker). 



Biology. A parasite of Diptera (Drosophilidae and Agromyzidae). In Britain it 

 has been reared from Phytomyza plantaginis R.-D. on Plantago coronopus L. and 

 from Scaptomyza graminum Fin. on Spergularia rupicola LeJ. (G. C. D. Griffiths) 

 (material in BM(NH)). Imagines (in Britain) June-November, evidently therefore 

 more than one generation per annum. The North American records of aenea need 

 checking because at least some of them refer to circulus (Walker) and not to the true 

 aenea. 



Notes on other species which belong to Halticoptera but have not been investigated 

 in detail : 



1. European species : 



Halticoptera citritibius (Rondani) 



Chrysolampus citritibius Rondani, 1877 : 170-171, pi. 4, figs. 132-137. 

 Halticoptera citritibius (Rondani) Delucchi, 1955a : 174. 



Type material in Museum " La Specola ", Florence. It was examined by 

 Delucchi who stated (1955) that the species belonged to Halticoptera, but did not 

 mention any further details. 



2. Extra-limital species {Types in BM(NH)) : 

 Halticoptera arduine (Walker) comb. n. 



Dicyclus Arduine Walker, 1843a : 115, $. 



Type Hym. 5. 854, $. 

 Type locality. Near Lima. 



