54 M. W. R. de V. GRAHAM 



Type material. For designation of lectotypes see Boucek (1963 : 461-462) who 

 established the above synonymy. 



Widely distributed in Europe (including Britain) ; Lebanon and Central 

 Asia ; North America (U.S.A.). Boucek (1963 : 464) considers that it is 

 probably a primarily European species which has been introduced into other regions. 



Biology. Hosts, species of Muscidae and Calliphoridae (see Boucek, 1963 : 464). 



Spalangia crassicornis Boucek 



Spalangia crassicornis Boucek, 1963 : 438, 464-466, $ $. 



Type material. Holotype $, Czechoslovakia : Revnice near Prague, vii.1952, 

 taken in company with Lasius fuliginosus (Latr.) (L. Masner) in Narodni Museum, 

 Prague (Cat. no. 25401). 



Europe (Britain, France, Holland, Luxembourg, Germany, Sweden, Czecho- 

 slovakia, Jugoslavia). 



Biology. Hosts, myrmecophilous Diptera associated with the ant Lasius fuli- 

 ginosus Latr., e.g., Milichia ludens Wahl. and Phyllomyza lasiae Collin (Milichiidae) . 

 For further details concerning the biology see Boucek (1963 : 466). 



Spalangia erythromera Forster 



(Text-figs. 32, 33) 



Spalangia nigra Haliday, 1833 : 334 et auctt. plur. [nee Latreille, 1805]. 



Spalangia erythromera Forster, 1850 : 512-513, $. 



Spalangia umbellatarum Forster, 1850 : 513-515, 6* ?• 



Spalangia spuria Forster, 1850 : 515-516, ?. 



Spalangia erythromera Forster ; Boucek, 1963 : 439, 466-471, q* $. 



Type material. For designation of lectotypes see Boucek (1963 : 466-468). 

 This author established the synonymy cited above ; he also redescribed the species 

 (ibid. : 468-470) and gave a valuable account of its variation. 



The species for long erroneously regarded as nigra Latreille by British authors 

 such as Haliday, Curtis, Walker, and Westwood, was in fact primarily erythromera 

 Forster, as suggested by Boucek (1963 : 445), although Walker regarded nigripes 

 Curtis and nigroaenea Curtis as " varieties " of " nigra " [= erythromera]. Boucek 

 (1963 : 445) suggested that Haliday's description (1833 : 334-335) of supposed 

 nigra seemed to fit rather erythromera Forster, in particular his statement " toler- 

 ably abundant ... in pastures and marshes . . . ". I can confirm this from an 

 examination of Haliday's collection, which contains several specimens of erythromera 

 one of which bears his label " nigra ". S. erythromera is in fact the commonest 

 species of the genus in the British Isles, as judged from collections and my own 

 experience. Boucek (1963 : 470-472) discussed the variation of erythromera, which 

 is considerable. Amongst other features he mentioned (ibid. : 470) that the tarsi 

 of specimens from some regions, e.g., Northern Europe, may be black instead of 

 partly testaceous. In British material I find a predominance of forms having the 



