466 M. W. R. de V. GRAHAM 



Psilocera crassispina (Thomson) 



Pteromalus curtus Zetterstedt, 1838 : 422, $ [nee P. curtus Walker, 1835 : 490]. 



PPteromalus obumbratus Walker, 1874 : 316, <J [nee P. obumbratus Walker, 1872 : 122]. 



Metopon crassispina Thomson, 1878 : 166, <J $. 



Pteromalus curtulus Dalla Torre, 1898 : 119 [n. n. for Pteromalus curtus Zetterstedt nee Walker]. 



PPteromalus nicaeensis Dalla Torre, 1898 : 137 [n. n. for Pteromalus obumbratus Walker 1874, 



nee 1872]. 

 Psilocera crassipina (Thomson) Dalla Torre, 1898 : 157. 

 Metopon crassispina Thomson ; Masi, 1944 : 84, 3* ?. 



Type material. Pteromalus curtus Zetterstedt. One female designated LECTO- 

 TYPE, labelled in Zetterstedt's handwriting " P. curtus $. Kengis ". 



Pteromalus obumbratus Walker, 1874. Syntypes, 2 $. LECTOTYPE labelled 

 " Amurland. Coll. F. Walker 1913-71 " and " 661 " ; the specimen is card-pointed. 

 It may be within the range of variation of male crassispina. 



Metopon crassipina Thomson. Syntypes, 7 specimens. LECTOTYPE, a female 

 labelled " O.G. Bhn " [Oster Gottland, Boheman] and " crassispina Ths ". It is 

 not easy to decide just how extensive is the variation of crassispina. As regards 

 females from Britain, France and Sweden, there is some variation in the fore wings, 

 which may be relatively broad or rather narrow, subhyaline or slightly infumate ; 

 the basal cell may have only a few hairs distally or, at the other extreme, may be 

 mainly pilose. The length of the first funicular segment relative to that of the 

 pedicellus varies slightly (from 0-9 to 1-15). 



A number of females from Czechoslovakia which Dr. Boucek kindly allowed me 

 to examine, show greater variation and are rather puzzling. One form from 

 Moldavia has the fore wing very narrow and strongly infumate, with the basal 

 cell pilose except at its base. Others have the fore wing rather broad, subhyaline 

 or weakly infumate, with the basal cell, not counting the basal vein, sometimes 

 bare, sometimes with about the distal third pilose ; in some of these specimens 

 the first funicular segment is shorter, in others longer, than the pedicellus. A few 

 specimens are intermediate. At first sight the Moldavian form with narrow infuscate 

 wings appear as though it might be distinct, but the existence of intermediate 

 forms seems to negative this idea. Possibly all these forms from Czechoslovakia 

 are crassispina, however. Whatever their status, the apparent variation of 

 crassispina in Central Europe will pose some problems. 



Britain, France, Sweden, Czechoslovakia, Italy. 

 Biology. Unknown. Imagines June-August. 



Psilocera ? pandens (Walker) 



Pteromalus pandens Walker, 1872 : 101, <J. 



Type material not located. The species was described from Spain. Walker 

 (1874 : 316) says that his Pteromalus obumbratus, 1874 [which is a Psilocera, see 

 above under crassispina] is allied to pandens, so that the latter may also have 

 belonged to this genus. 



