Orthetrum camarense

Kirby, W. F., 1889, Descriptions of new Genera and Species of Odonata in the Collection of the British Museum, chiefly from Africa., Proceedings of the Zoological Society of London 1889, pp. 297-303 : 298

Orthetrum camarense .

Exp. al. 22 millim.; long. corp. 49 millim.

Male. Black, vertex metallic blue; abdomen inflated at base, with the third segment pulverulent blue. Wings brownish hyaline: fore wings with 19 antenodal and 14 postnodal cross-nervures; the 3 first postnodals not continuous; triangle traversed by one or tuo cross-nervures; one supratriangular nervure; 3 cells in the subtriangular space; three rows of post-triangular cells, increasing, commencing on one side with four. Hind wings with 14 antenodal and 13-14 postnodal cross-nervures, the base tinged with smoky Yellow, the membranule dark smoky brown, and a basal stripe of the same colour in the second costal space as far as the third crossnervure, and another in the lower basal cell, shorter, and not eXtending to the base of the triangle, which is traversed, though there are no supra-triangular neivures on the hind wings. Tips of all the wings slightly clouded with brown beyond the pterostigma; appendages of 2nd segment large; anal appendages black, about as long as the last two segments (the lower one as long as the others) and of the ordinary form. Pterostigma dark brown, covering 3 or 4 cells.

Hab.. Cameroons.

Allied to O. albistyla, Selys , from which the darker wings and black appendages will abundantly distinguish it.