. Bulletin of the British Museum (Natural History) Entom Supp. 130 Wing shape. £ fore wing inner margin feebly lobed basally : hind wing hind margin with a sharp tooth at end of vein 3, a long and delicate tail at vein 2, and a delicate and much longer tail at ib ; anal angle lobed. Male secondary sexual characters : midway on the inner margin of the fore wing below there is a tuft of yellowish hair directed towards vein 2 ; on the upper- side of the hind wing, between vein 7 and the upper edge of the cell, a greyish oval patch covered with large oval erect scales and surrounded by
. Bulletin of the British Museum (Natural History) Entom Supp. 130 Wing shape. £ fore wing inner margin feebly lobed basally : hind wing hind margin with a sharp tooth at end of vein 3, a long and delicate tail at vein 2, and a delicate and much longer tail at ib ; anal angle lobed. Male secondary sexual characters : midway on the inner margin of the fore wing below there is a tuft of yellowish hair directed towards vein 2 ; on the upper- side of the hind wing, between vein 7 and the upper edge of the cell, a greyish oval patch covered with large oval erect scales and surrounded by a wide bronze shining area that fills the cell and is covered with smaller scales. Wing venation (Text-fig. 294). The q* fore wing with 12 veins, $ with 11, vein 8 being absent. Male genitalia (Text-fig. 115). Uncus composed of two long sharp, slightly curved points, separate almost to the base ; subunci rudimentary, subtriangular and scarcely visible ; tegumen reduced ; vinculum broad, bearing on each side two large, triangular, weakly sclerotized expansions ; in their natural position these expansions are joined to the lower fultura by a membrane ; in silas the vinculum ends in a large triangular saccus, which is lacking in the other two species of the sub-genus. Fultura inferior composed of a ring born on a peduncle and surrounding the penis ; valves oblong ; penis short, massive, widely open above basally ; vesica enclosing stout cunei ; uncus pilose, upper margin of valves only slightly so. Among the many species placed in Argiolaus by Druce and other authors, only two, lalos and crawshayi have male genitalia of the silas type. In the others they are so different that it has been necessary to arrange them in new subgenera. The area of distribution of Argiolaus even in this restricted sense is very extensive, comprising the whole of East and South Africa from Abyssinia to the Cape, and the species break up into more or less sharply defined geographical races, each of whic
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