38 M. W. R. de V. GRAHAM 



- Head and dorsum of thorax dull green or blue-green, without or with at most weak 

 brassy reflections. Fore wing with fuscous markings more indefinite, the trans- 

 verse bands not joined, sometimes faint. Gaster about 2-5 times as long as 

 broad. Malar space approximately half the length of an eye. Eyes separated by 

 o-8 to 0-85 times their own length ..... obscurus Walker (p. 39) 



Cleonymus laticornis Walker 

 (Text-figs. 41, 48) 



Ichneumon depressus Fabricius, 1798 : 231, no. 220 [$] [nee Gmelin 1790]. 



Ichneumon depressus Fabricius ; Coquebert, [71798] 1799 : 21, pi. 5, fig. 5 [$]. 



Diplolepis depressa Fabricius, 1804 : 151. 



Cleonymus depressus (Fabricius) Westwood, 1828 : 16, pi. 2, fig. 1, $. 



Cleonymus depressus (Fabricius) Walker, 1837 : 350, $ $. 



Cleonymus laticornis (Haliday MS.) Walker, 1837 : 351, <$. 



Cleonymus depressus (Fabricius) Kerrich & Graham, 1957 : 267-270, <$ $. 



Cleonymus depressus (Fabricius) Ferriere & Kerrich, 1958 : 25, <J ?• 



Type material. Ichneumon depressus Fabricius. The original record given by 

 Fabricius (1798 : 231) is " Habitat Parisiis Dom. Bosc." The species was later 

 figured in colour by Coquebert (1799, pi. 5, fig. 5), whose work comprises illustrations 

 of the insects in the Paris Museum which had been described by Fabricius. From 

 these two references one might expect the type or types of depressus to be in the 

 collection of Bosc d' Antic which is still preserved in the Musee d'Histoire naturelle, 

 Paris. In 1962 I examined the Bosc collection but was unable to find any specimen 

 of depressus ; it may have been subsequently lost. Coquebert's figure agrees very 

 well indeed with the female of Cleonymus depressus as generally understood. In the 

 private collection of Fabricius (Kiel University) there is one specimen, attached to the 

 pin of which is a piece of paper on which is written (in a handwriting probably that of 

 Fabricius himself) " depressus ". This specimen lacks the head and gaster but is 

 clearly a female of Cleonymus depressus in the generally accepted sense. If no 

 material is subsequently discovered in Paris, then the Kiel specimen should be taken 

 as lectotype. 



The name Ichneumon depressus Fabricius is twice a primary homonym, being 

 preoccupied by /. depressus Gmelin in Linnaeus, 1790, Syst. Nat., ed. 13, 1 : 2687, 

 and by /. depressus Gmelin in Linnaeus, 1790, op. cit. : 2706. 



Cleonymus laticornis Walker. Type (probably holotype) male in Haliday collec- 

 tion (no. 68) ; it bears a white ticket numbered " 583 ", also a pink label " lati- 

 cornis " in Haliday 's handwriting. The species was placed in synonymy with 

 depressus (F.) by Kerrich & Graham (1957 : 268). The type of laticornis differs 

 from all the other British males I have seen in its very dark legs ; the coxae are 

 black with a metallic tinge, the femora blackish except at their tips ; and the tibiae 

 are fuscous, pale only at their bases and tips ; the wing-markings are less strong 

 than usual. 



Widely distributed in Europe. 



Biology. Parasitic on xylophagous Coleoptera ; reared in England from 

 Molorchus minor L. (Cerambycidae), see Kerrich & Graham (1957 : 269). On 



