go M. W. R. de V. GRAHAM 



Coll. F. Walker 1913-71 " and, in Walker's handwriting, " Perilampus obscurus ". 

 P. obscurus was placed in synonymy with Chrysolampus thenae (Walker) by Kerrich 

 (1958 : 83). 



Britain, Sweden, Germany, Austria, Czechoslovakia, ? Hungary, U.S.S.R., 

 Siberia. 



Biology. Reared in Britain as a parasite of Meligethes pedicularius (Gyll.) by 

 Dr. A. M. Easton (1963 : 11). Dr. Easton stated that mature host larvae collected 

 from Stachys officinalis (L.) Trev. from Flintshire and Denbighshire were allowed 

 to enter soil placed in tubes. Several days later a few of the larvae which had 

 failed to pupate were seen to have a minute ectoparasite lying transversely across 

 their ventral surface. These grew extremely rapidly and, when the host was 

 consumed, entered upon a winter diapause. Imagines emerged the following 

 spring. Only one parasite was found on each host larva. Of two batches of the 

 host larvae, 5 out of 19, and 4 out of 25 respectively, were infested by the parasite. 

 If the earliest stage of the larvae of thenae can be studied, this may provide an answer 

 to the question of the systematic position of the genus Chrysolampus. Imagines 

 April- July in Britain. 



Chrysolampus rufitarsis (Forster) 



Elatus rufitarsis Forster, 1859 : m-113, q* $>. 



Elatus rufitarsis Forster ; Ruschka, 1924a : 95, 96, q" $. 



Chrysolampus rufitarsis (Forster) Boucek, 1956 : 97. 



Chrysolampus rufitarsis (Forster) ; Kerrich, 1958 : 83, <J $• 



Chrysolampus rufitarsis (Forster) ; Ferriere & Kerrich, 1958 : 21, 3* $. 



Type material. Syntypes, $ from Aachen, $ from Tyrol, in coll. Forster (Natur- 

 historisches Museum, Vienna) re-examined by Ruschka, but not apparently since 

 then. It will be necessary to select a lectotype. 



Britain, Germany, Austria, Czechoslovakia, ? U.S.S.R. 

 Biology. Unknown. Imagines May-July in Britain. 



Chrysolampus shurik (Nikol'skaya) 



Elatus shurik Nikol'skaya, 1952 : 200. 



Elatus shurik Nikol'skaya ; Boucek, 1956 : 97. 



Chrysolampus shurik (Nikol'skaya) Kerrich, 1958 : 82, 83, 84. 



Type material. Type (European part of U.S.S.R.) presumably in Zoological 

 Museum, Leningrad (not seen). Boucek (1956) suggested that shurik was probably 

 the same as rufitarsis Forster, but later he regarded it as a valid species (see Kerrich, 

 1958 : 82). Kerrich (ibid. : 83) listed some characters for distinguishing rufitarsis 

 and shurik. Dr. Boucek, who has had his material of shurik confirmed by Dr. 

 Nikol'skaya, tells me that the species can easily be separated from thenae by having 

 much more distinct transverse rugae on the pronotum and mesoscutum, and by 

 its colour. 



