PTEROMALIDAE OF N.W. EUROPE 253 



surface of wing, pilose in distal quarter only ; stigmal vein nearly straight ; palpi 

 fuscous ; flagellum stout, with distal funicular segments strongly transverse, the 

 sixth about twice as broad as long ; head and thorax dull green, the scutellum 

 and axillae often more or less bronze. Male. Unknown vernalis Walker (p. 253) 



- Female. Fore wing immaculate ; basal cell mainly pilose, at most with a small bare 

 area in the middle ; stigmal vein distinctly curved ; palpi yellow ; flagellum more 

 slender, with distal funicular segments less transverse, the sixth about 1-5 times as 

 broad as long ; head and thorax bright or golden green to blue. Male. Charac- 

 ters of female, but antennal scape broader, flagellum nearly filiform hit us Walker (p. 253) 



Ormocerus vernalis Walker 



Ormocerus vernalis Walker, 1834 : 169, ?. 

 Terobia dispila Forster, 1878 : 65, $. 

 Ormocerus vernalis Walker ; Askew, 1961a : 193, 9- 

 Ormocerus vernalis Walker ; Boucek, 1961 : 64. 



Type material. Ormocerus vernalis Walker. Syntypes, 6 $. LECTOTYPE, 

 the second specimen, bearing a Waterhouse label. 



Terobia dispila Forster. Location of type not known to the writer. The species 

 was placed in synonymy with Ormocerus vernalis Walker by Delucchi (1955a : 175). 



Walker cited no locality for his original material of vernalis. However, in his 

 annoted hand-copy of his Monographia (which I possess) he has entered against 

 vernalis " May Woods near London. Holy wood Mr. Haliday ". Most likely the 

 original specimens came from near London because there is reason to suppose that 

 he did not have material from Haliday until later than 1834. 



Britain, Ireland, Germany, Czechoslovakia. 



Biology. Parasitic in galls of Neuroterus albipes (Schenck) and Andricus ostretis 

 f. furunculus (Beyer) ; see Askew (1961 : 193). 



I have swept only single females on various dates in April, May and June of differ- 

 ent years. The male is still unknown. 



Note. The species recorded as Ormocerus vernalis by Thomson (1876a : 242) was 

 wrongly identified ; it is in fact the same as Seladerma (Isoplata) geniculatum (Zett.). 



Ormocerus latus Walker 



Ormocerus latus Walker, 1834 : 168, <J. 



? Ormocerus vernalis var. e Walker, 1834 : 169, $. 



Ormocerus latus Walker ; Askew, 1961a : 193, $ $?■ 



Type material. One male, LECTOTYPE, bearing a Waterhouse label and 

 another " Type Gahan 1927 ". 



Britain. 



Biology. Parasitic in galls of Neuroterus albipes (Schenck) ; see Askew, 1961 : 

 193. I find it not uncommonly in mixed oakwoods during the spring months ; 

 I have often swept it from foliage of Betula. 



The other species originally placed by Walker in Ormocerus belong to other 

 genera, and are mentioned in the appropriate places. 



