. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. TJie Oilnnata or Dntfintijlirs nf Snutli Afr!,;,. 399 As far as our experience goes, the area of ijuineense is much the same as that of Abbott i, but the latter seems chiefly eastern, the former western in distribution. ORTHETEUM BRACHIALE (Palisot de Beauvais, 1805). S. Afr. Mus. : 1 9 . Lorenco Marques. Mus. Hamburg: 1 J , Loren9o Marques (17 . ix . 1911, Michaelseu). Coll. Kis : 1 9 , Eikatla, Delagoa Bay (iv . 1914, H. Junod). Coll. E. B. Williamson: 3 <$, 19, Salisbury, Mashonaland (iv . 1905,
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. TJie Oilnnata or Dntfintijlirs nf Snutli Afr!,;,. 399 As far as our experience goes, the area of ijuineense is much the same as that of Abbott i, but the latter seems chiefly eastern, the former western in distribution. ORTHETEUM BRACHIALE (Palisot de Beauvais, 1805). S. Afr. Mus. : 1 9 . Lorenco Marques. Mus. Hamburg: 1 J , Loren9o Marques (17 . ix . 1911, Michaelseu). Coll. Kis : 1 9 , Eikatla, Delagoa Bay (iv . 1914, H. Junod). Coll. E. B. Williamson: 3 <$, 19, Salisbury, Mashonaland (iv . 1905, Marshall). Generally larger than the species of the chrysostigma group, which it resembles by the mostly rather light coloured pterostigma ; ante- rior vein of pterostigma conspicuously thickened in bmchiale more often than in any other species of the group. Abdominal pattern much as iu stem male capense, but with black elements reduced ; the. FIG. 74.—Orthetrum brachiale, $ . Lorenzo Marques. Genitalia, second segment, left side view. same may be stated for the thoracic pattern, at least for specimens iu which the two broad lateral light-coloured stripes are obliterated by age or destroyed by decomposition. The excellent group 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 iu yinneense and even in chrysostigma), where mature specimens not rarely have those veins much obscured, although they are con- spicuously whitish in less mature specimens. For males the quite 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 iu Madagascar and some of the smaller islands. ORTHETRUM STEMWALE CAPENSE (Calvert, 1893). S. Afr. Mus. : 2 £, 5 ? , Loren90 Marques (ix, xi, xii . 1911) ; 6 £, 8 ?, MTongosi, Zululaud (ii, iii, v, xi . 1911, W. E. Jo
Size: 2004px × 1247px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorsouthafricanmuseum, bookcol, booksubjectnaturalhistory
