PTEROMALIDAE OF N.W. EUROPE 789 



Type material. Holotype 9. France, Antibes, 7.viii.i934, reared from adult of 

 Otiorrhynchus rugosostriatus (Goeze) (R. Pussard) in BM(NH) ; paratypes in the 

 same collection. 



This species is so close to pirus (Walker) that I feel doubtful whether it is really 

 distinct. The most obvious difference lies in the pale antennae and legs of ferrierei, 

 as compared with those of north-west European examples of pirus. One might 

 expect, however, that pirus from more southern localities in Europe, such as the 

 south of France, -where, ferrierei was taken, would have relatively paler appendages 

 than the northern specimens, since that is the case with several species belonging 

 to other genera. As regards females, those of ferrierei have the temples a little 

 shorter and more convergent than in pirus ; this might prove to be a valid distinction. 

 For the present I treat ferrierei as being possibly distinct from pirus ; but it will be 

 necessary to evaluate the variation of pirus by examining material from as many 

 different regions in Europe as possible, before the status of ferrierei can be confirmed. 



ARTHROLYTUS Thomson 



Pleromalus sgen. Arthrolytus Thomson, 1878 : 147, 158. Type-species : A. punctatus Thomson 

 by designation of Ashmead, 1904 : 320. 



Arthrolytus Thomson 

 Arthrolytus Thomson 

 Arthrolytus Thomson 

 Arthrolytus Thomson 

 Arthrolytus Thomson 

 Arthrolytus Thomson 



Ashmead, 1904 : 320, 322. 



Schmiedeknecht, 1909 : 329, 331, 358-359, [ex parte}. 



Kurdjumov, 1913 : 7-8, ex parte. 



Nikol'skaya, 1952 : 228-229. 



Graham, 19566 : 254. 



Peck el al., 1964 : 57. 



Key to European Species 



(Females) 



Antenna (Text-fig. 648) with first funicular segment not constricted basally ; 

 flagellum stout, cylindrical or subfusiform ; second anellus fully twice as long 

 as the first. Antennae inserted low on head, much nearer to the anterior 

 margin of the clypeus than to the median ocellus, the lower edge of the toruli 

 hardly above the level of the ventral edge of the eyes ; head strongly pro- 

 tuberant at level of toruli. Malar space hardly one third the length of an eye. 

 Propodeal plicae weak, curved. (AN ARTHROLYTUS sgen. n.) 2 



Antennae with first funicular segment (Text-figs. 651, 652) usually distinctly 

 constricted basally ; if hardly so then the lower edge of the antennal toruli is 

 well above the level of the ventral edge of the eyes, and the head is hardly 

 protuberant at the level of the toruli. Antennal flagellum clavate ; anelli 

 subequal in length. Malar space slightly more than one third the length of 

 of an eye. Propodeal plicae strong, slightly curved or nearly straight. 

 (Arthrolytus Thomson, s. str.) ......... 3 



(1) Fore wing with stigmal vein (Text-fig. 309) forming an acute angle with the 

 postmarginal vein. Femora usually entirely pale, sometimes with a dark 

 stripe beneath. Fore wing with a broad and very intense fuscous cloud which 

 is usually extended to the hind margin of the wing. Head in dorsal view 

 thicker antero-posteriorly, twice as broad as long or hardly more 



ocellus (Walker) (p. 793) 



