PTEROMALIDAE OF N.W. EUROPE 783 



to two different species. Those from spruce-cones might have been Anogmus vala 

 according to Boucek (1966a, see under A, vala), a view which I consider quite 

 possible. The identity of the other females, from Saxesen, is problematic ; presum- 

 ably Thomson had them in mind when he identified complanatus as belonging to 

 his genus Trichoglenus (1878 : 149), which has conspicuously pilose eyes and a 

 margined occiput. However, Kurdjumov (1913 : 16) remarked of complanatus 

 Ratzeburg " this is not the same as Diglochis (Trichoglenus) complanatus Th., 

 differing in the naked eyes and immargined occiput ". Although Kurdjumov saw 

 Ratzeburg's types (including presumably those of complanatus) he did not say 

 whether he had in mind the material which Ratzeburg had received from Nordlinger 

 (reared from spruce-cones) or the Saxesen material. To decide which of these 

 conflicting views should finally be accepted, it may be necessary to apply to the 

 International Commission on Zoological Nomenclature. If it should be decided 

 that complanatus Ratzeburg (based on his material from Saxesen) is the same as 

 sylvicola Walker (= complanatus sensu Thomson) then the name Diglochis Forster 

 could be retained for the present genus. On the other hand, if the interpretation 

 of complanatus Ratzeburg based on his material from spruce-cones should be 

 accepted, the Diglochis would become a synonym of Anogmus Forster, and the 

 valid name for the present genus would be Trichoglenus Thomson. On the whole 

 the first alternative (that provisionally followed here) seems preferable in the 

 interest of uniformity. 



Diglochis sylvicola (Walker) 



Pteromalus sylvicola Walker, 1835 : 481, $. 



? Pteromalus crinifrons Forster, 1841 : 23, <J. 



Pteromalus complanatus Ratzeburg, 1844a : 197, $, [ex parte] . 



Trichoglenus complanatus (Ratzeburg) Thomson, 1878 : 149-150, <J $. 



Diglochis sylvicola (Walker) Graham, 1956& : 260. 



Type material. Pteromalus sylvicola Walker. Lectotype designated by Graham 

 (19566 : 260). 



Pteromalus crinifrons Forster. I have not seen the type, which according to 

 Delucchi (1958a : 51) is a badly-damaged male ; he says that it is very probably 

 identical with complanatus (Ratzeburg). 



Pteromalus complanatus Ratzeburg. Types presumed lost. The interpretation 

 of Thomson (1878 : 149), which was accepted by Mayr (1904 : 598) is provisionally 

 followed here. 



Britain, Ireland, Sweden, Germany. Local, often in woodland habitat ; I 

 have sometimes swept it from foliage of willows (Salix spp.). 



Biology. Thomson (1878 : 150) stated that in Sweden this species had been 

 reared from a pupa of " Lipara salicis " . There appears to be no such species. 

 Perhaps Thomson's record was a mistake for the Lymantriid moth Stilpnotia 

 salicis (L.), which in nineteenth-century literature was often called Liparis salicis. 



