1 68 



M. W. R. de V. GRAHAM 



Britain, Ireland, very local or rare. 



Biology. Unknown. Imagines captured in July and September ; females also 

 in winter, Mr. Stelfox beat some from foliage of Araucaria at Killakee Park, Dublin, 

 on 7.11.1956. 



RHICNOCOELIA Graham 



Megorismus Thomson, 1876a : 220, 240 [nee Walker, 1846]. 



Rhicnocoelia Graham, 19566 : 262. Type-species : Pteromalus constans Walker, 1836, by original 



designation. 

 Doghmiella Delucchi, 1962a : 7, syn. n. Type-species : D. viridis Delucchi, 1962, by original 



designation. 

 Rhicnocoelia Graham, Peck et al., 1964 : 35, 38. 



The question of speciation in Rhicnocoelia requires careful study. Some of the 

 following are not easy to distinguish, in particular the complex of constans and impar ; 

 whilst I have no difficulty in referring the majority of specimens of the complex to 

 one or other of these two, a few are less easy to place. Possibly constans and impar 

 may be forms of a single polymorphic species, but the information at present avail- 

 able is insufficient for providing an answer to this question. 



129 



Figs. 129-133. 129, Halticoptera hippeus (Walker), <2, gastral petiole ; 130, Tricyclo- 

 mischus celticus Graham, $, body ; 131, same, £, head ; 132, same, $, antennae 

 excluding scape ; 133, same, $, fore wing. 



