The Oihmafa or Dnuionfli'es of South Africa. 399 



As far as our experience goes, the area of guineenge is much the 

 same as that of Abbotti, but the latter seems chiefly eastern, the 

 former western in distribution. 



Oktheteum brachiale (Palisot de Beauvais, 1806). 



S. Afr. Mus. : 1 9 , Loren90 Marques. Mus. Hamburg : 1 J,Lorenco 

 Marques (17 . ix . 1911, Michaelseu). Coll. Eis : 1 ? , Eikatla, Delagoa 

 Bay (iv . 1914, H. Juuod). Coll. E. B. Williamson: S ^, 1 ?, 

 Salisbury, Mashoualaud (iv . 1905, Marshall). 



Generally larger than the species of the clirijgostliimii group, which 

 it resemliles by the mostly rather light coloured pterostigma ; ante- 

 rior vein of pterostigma conspicuously thickened in brachiale more 

 often than in any other species of the group. Abdominal pattern 

 much as in stemmale capense, but with black elements reduced ; the 



Fig. 74. — Orthetmm brachiale, g . Loren<;o Marques. Genitalia, second 

 segment, left side view. 



same may bo stated for the thoracic pattern, at least for specimens in 

 which the two broad lateral light-coloured stripes are obliterated by 

 age or destroyed ))y decomposition. The excellent grouj) character 

 (first applied by P. P. Calvert) of colour of ante-nodal cross-veins in 

 sub-costal space is often treacherous in 0. brachiale (also sometimes in 

 giiiiieenne aud even in chrijsostigmd), where mature specimens not 

 rarely have those veins much obscured, although they ai-e con- 

 spicuously whitish in less mature sjaecimens. For males the Cfuite 

 peculiar form of hamuli is a guide in any case (Text-fig. 74). 



0. brachiale is chiefly an inter-tropical species, found about equally 

 in Western and Eastern regions of the African continent, also in 

 Madagascar and some of the smaller islands. 



Oetheteum stemmale capense (Calvert, 1893). 

 S. Afr. Mus. : 2 (^, 6 $ , Lorenco Marques (ix, xi, xii . 1911) ; 6 (? , 

 8 ?, M'Fongosi, Zululand (ii, iii, v, xi . 1911, W. E. Jones); 13 S, 



