PTEROMALIDAE OF N.W. EUROPE 707 



Type material. Spaniopus polyspilus Graham. Lectotype female in coll. 

 Thomson, designated by Graham (19566 : 251). 



Gyrinophagus peisonis Erdos. Type $ and allotype <$, Hungary, Vors (Kisbalaton) , 

 16. vi. 1955, from Phragmites communis Trim, in coll. Erdos (not seen by the writer). 

 From the description it would appear to be probably the same as polyspilus. 



Britain, Ireland, Sweden, Czechoslovakia ; ? Hungary. 



Biology. Associated with Phragmites communis Trim; I have captured several 

 specimens in a large reed-bed at Yddingen in Skane, Sweden. Imagines (? June) 

 July-August. 



TRICHOMALUS Thomson 



Isocyrtus sgen. Trichomalus Thomson, 1878 : 131, 134. Type-species : T. punctinucha 



Thomson, by designation of Ashmead, 1904 : 318. 

 Trichomalus Thomson ; Mayr, 1903 : 393-394. 

 Trichomalus Thomson ; Kurdjumov, 1913 : 4, II. 

 Trichomalus Thomson ; Nikol'skaya, 1952 : 222. 

 Lanceosoma Erdos, 1953 : 2 34 _2 35- Type-species : L. althaeae Erdos by monotypy and 



original designation. 

 Trichomalus Thomson ; Graham, 1956b : 247-250. 

 Trichomalus Thomson ; Delucchi & Graham, 1956 : 543-576. 

 Trichomalus Thomson ; Peck et al., 1964 : 53. 



Ashmead (1904) designated T. punctinucha Thomson as the type-species of 

 Trichomalus. He actually misidentified the genus [see Eupteromalus] as pointed out 

 by Kurdjumov (1913 : 12), although this does not invalidate his type selection. 



I have not seen the type-species of Lanceosoma Erdos. Dr. Boucek has shown 

 me a species which must be very near it and he thinks the genus must be the same 

 as Trichomalus. The name Lanceosoma would then be applicable to a species-group 

 of Trichomalus including althaeae (Erdos), elongatus Delucchi & Graham, and possibly 

 other species. 



Graham (19566) revised the synonymy of Trichomalus and designated lectotypes 

 for most of the Walker species. Delucchi & Graham (1956) redescribed the 

 European species and provided a key to the females. Since that time the writer 

 has made some changes in the nomenclature and added a few more synonyms. 

 Previously no lectotypes had been designated for Thomson's species ; this is now 

 done. 



The key to European species given by Delucchi & Graham (1956 : 547-551) 

 needs revision because some additional species have since been recognized, also 

 because some changes in nomenclature are necessary (partly as a result of a 

 redefinition of certain species). Since then I have been able to study much 

 additional material and compare it with the respective types. Consequently 

 I believe I have formed a better concept of the range of variation of the species, 

 most of which can now be defined fairly satisfactorily. Some difficulties remain, 

 chiefly concerning the group of posticus (Walker) which contains some rather variable 

 species. 



