PTEROMALIDAE OF N.W. EUROPE 91 



Central Europe, U.S.S.R. 

 Biology. Unknown. 



Note. The identity of the genus Acroclisis Forster (1878 : 43) is problematic. 

 It was described from Germany with a single included species, nigricornis Forster 

 (ibid. : 44) ; the type-material of this species does not appear to have been located. 

 Subsequent references to Acroclisis, e.g., in Ashmead (1904) and Schmiedeknecht 

 (1909) were based partly on the original description, and partly on a North American 

 species A. carolinensis Ashmead which has since been removed to the Miscogasterine 

 genus Babeckia (by Peck, in Muesebeck et al., 1951 : 538). In his key to the Czecho- 

 slovak genera of Pteromalidae Boucek (in Peck et al., 1964 : 37) includes Acroclisis, 

 but evidently his diagnosis of it is based on the original description only. Recently, 

 when re-reading Forster's description of Acroclisis, I was struck by the fact that in 

 most respects it agreed extremely well with the characters shown' by species of the 

 thenae-group (Elatus Walker) of the genus Chrysolampus. His statement " An den 

 Vorderfliigeln der Randabschnitt [marginal vein] . . . wenigstens fiinf mal so lang 

 wie der Radialabschnitt [stigmal vein] ..." fits the above-mentioned Chrysolampus 

 species very well ; moreover, there appears to be no other genus of Pteromalidae 

 which has such a long marginal vein, and at the same time fits the other characters 

 mentioned in Forster's description. Forster himself knew two species of the 

 thenae-group of Chrysolampus and in 1859 had described a new one, rufdarsis (q.v., 

 supra). It seems remarkable (though not perhaps impossible) that he should have 

 forgotten this when he described Acroclisis in 1878. 



CHRYSOMALLA Forster 



Chrysomalla Forster, 1859 : 115. Type-species : C/i. voseri Forster, by monotypy. 



Chrysomalla Forster ; Schmiedeknecht, 1909 : 81, 82. 



Chrysomalla Forster ; Ruschka, 1924a : 93. 



Chrysomalla Forster ; Nikol'skaya, 1952 : 196-198. 



Chrysomalla Forster ; Erdos, 19556 : 39 ex parte. 



Chrysomalla Forster ; Peck et al., 1964 : 26. 



Chrysomalla roseri Forster 



Chrysomalla Roseri Forster, 1859 : 116-117,0*- 

 Chrysomalla roseri Forster ; Ruschka, 1924a : 93, 6*- 

 Chrysomalla roseri Forster ; Erdos, 19556 : 39. 



Type material. Holotype $, Germany, Wiirtemberg (von Roser) in Natur- 

 historisches Museum, Vienna (not seen by the writer). 



Germany, Czechoslovakia, Hungary, southern U.S.S.R., Kazakhstan. 



Biology. Erdos (19556 : 39) gave some biological notes on roseri ; I wish to 

 thank the Director, and Miss Gombrich, of the Commonwealth Forestry Bureau, 

 Oxford, for the following translation of the Hungarian text : "It was bred from 

 the curculionid beetle Tychius flavus Beck. It has been found in Germany, the 

 southern part of the Soviet Union and locally in Kazakhstan. It was collected 



