4 i6 M. W. R. de V. GRAHAM 



Britain, Sweden, Czechoslovakia, Moldavian S.S.R. 



Biology. Reared in Sweden from Scolytus intricatus Ratzeburg (Hedqvist, 1963 : 

 iog) ; in Bohemia from Magdalis armigera (Geoff r.) in twigs of elm (Ulmus) and in 

 Slovakia from Hylesinus toranio Danth. on ash (Fraxinus) according to Boucek 

 1957 : 164). Beaver (1965) reared it in England from Ulmus logs infested by 

 Acrantus vittatus (F.) (Col., Scolytidae). Imagines in spring and late summer. 



Note. Acrocormus megastigmas Ashmead (in Riley et al., 1894 : 155, type-locality 

 St. Vincent, Grenada) is represented in BM(NH) by the <$ type (Type Hym. 5. 678). 

 It does not belong to Acrocormus, but to some genus of Pteromalidae unknown to 

 me and not allied to any of our European forms. 



CHEIROPACHUS Westwood 



Cheiropachus Westwood, 1828 : 23. Type-species : Diplolepis quadrum Fabricius, by original 



designation. 

 Cheiropacliys Haliday, 1833 : 268 [erroneous subsequent spelling]. 

 Pachychirus Agassiz, 1846 : 777 [n. n. for Cheiropachus Westwood, supposedly pre-occupied by 



Chiropacha Carpentier, 1841]. 

 Pachychirus Agassiz ; Forster, 1856 : 66, 69. 



Chir opacity s van Vollenhoven, 1871, fasc. 3, pi. 10 [erroneous subsequent spelling]. 

 Tropidogastra Ashmead, 1904 : 323. Type-species : T. arizonensis Ashmead, by monotypy. 



Cheiropachys Westwood 

 Cheiropacliys Westwood 

 Cheiropachus Westwood 

 Cheiropachus Westwood 

 Cheiropachus Westwood 



Schmiedeknecht, 1909 : 155, 157, 162 [ex parte]. 

 Kurdjumov, 1913 : 22-23. 

 Ferriere, 1948 : 522-523. 

 Hedqvist, 1963 : 102-110. 

 Peck el al., 1964 : 44. 



The genus Tropidogastra Ashmead was placed in synonymy with Cheiropachus 

 Westwood by Gahan (1938 : 219). In the same paper (pp. 219-220) Gahan gave 

 a key to the North American species of Cheiropachus. 



In Europe only one species is known : 



Cheiropachus quadrum (Fabricius) 



PCynips tripunctatus Fourcroy, 1785 : 389. 



Ichneumon quadrum Fabricius, 1787 : 270. 



Pteromalus bimaculatus Swederus, 1795 : 222. 



Cleonymus maculipennis Curtis, 1827 : folio 194, q\ 



Cheiropachus quadrum (Fabricius) Westwood, 1828 : 25. 



Pteromalus bimaculatus (Spinola) Nees, 1834 : 96,0*. 



Pteromalus bicaliginosus Ratzeburg, 1844a : 190 [£]. 



Pteromalus binaevius Ratzeburg, 1844a : 190, <£. 



Pteromalus Fraxini Ratzeburg, 1844a : 191, $. 



Pteromalus binimbatus Ratzeburg, 1844a : 191, ?. 



Pteromalus binubeculatus Ratzeburg, 1844a : 191, $. 



Pachychirus quadrum (Fabricius) Forster, 1856 : 70. 



Pachychirus intermedius Forster, 1856 : 70. 



Cheiropachys colon (Linnaeus) Thomson, 1878 : 33, 6* ? [nee Sphex colon Linnaeus, 1758]. 



Cheiropachys colon (Linnaeus) ; Kurdjumov, 1913 : 22-23. 



Cheiropachys colon (Linnaeus) ; Russo, 1938 : 181-195. 





