2o 4 M. W. R. de V. GRAHAM 



Seladerma euroto (Walker) comb. n. 

 Miscogaster Euroto Walker, 1839 : 198 " $ " [recte $]. 



Type material. Syntypes, 1 $ in BM(NH), Walker coll., ex coll. Haliday ; 1 $ 

 in coll. Haliday (no. 729). LECTOTYPE, the female in coll. Haliday, labelled 

 " Euroto " in Walker's handwriting. The two syntypes are conspecific, but the 

 BM(NH) female (which is larger) disagrees in colour with the description of the 

 nominotypical form (it is probably var. (3). Both females have the apex of the gaster 

 eaten off, leaving the yellowish ovipositor projecting ; if this damage had already 

 occurred when Walker saw the specimens, it would account for his having mistaken 

 their sex. 



S. euroto is very close to breve and might be the same ; but it has the funicular 

 segments of the antenna (females) shorter than in any of my specimens of breve, also 

 there is a slight difference in the venation of the fore wing. I have no fresh material 

 which exactly fits the syntypes of euroto and consider it advisable to regard it 

 provisionally as a valid species. 



Ireland : Co. Down, Holywood (A. H. Haliday). 

 Biology. Unknown. 



The LAETUM-Grovp 

 (= SELADERMA Walker, s. str.) 

 Seladerma laetutn Walker 



Seladerma laetum Walker, 1834 : 289, $. 



? Miscogaster Dryops Walker, 18396 : 31, $. 



Seladerma laetum Walker, Delucchi, 1955 : 47, 51-53, o* ?. 



Type material. Seladerma laetum Walker. Syntypes, 3 specimens. LECTO- 

 TYPE, a female bearing a Waterhouse label, also one in C. Ferriere's handwriting 

 " Type C.F. ". 



Miscogaster dryops Walker. One male (probably holotype) in coll. Greville, 

 Edinburgh, labelled " Miscog. Dryops, Wk. n. sp. Fide Wk. Edinb." and " Greville 

 1936-50. 287 ". This seems to fit the male of laetum, but the males of some 

 species of this group are not easy to distinguish. 



Britain, Ireland, Sweden, Germany, Moldavian S.S.R. ; probably more 

 widely distributed in Europe. Common in Britain and Ireland. 



Biology. Reared from Amaurosoma armillatum (Zett.) (Dipt., Scatophagidae) 

 (/. J. F. X. King), Scotland, Glasgow, 5-7. vi. 1934. Also recorded as a parasite of 

 Amaurosoma flavipes (Fin.) and A. armillatum (Zett.) in Sweden (Secretariat, etc. 

 1957 : 321, 330). Imagines June-July. 



Seladerma violaceum Delucchi 



Seladerma violaceum Delucchi, 1955 : 47, 49-50, $. 



