. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. REVISION OF THE BOMBYLIIDAE (DIPTERA) OF SOUTHERN AFRICA 819 Exoprosopa morosa Lw. (Loew, p. 232 and tab. ii, fig. 30, Dipt. Faun. Sildafr., i, i860; Bezzi, in part, p. 153, Ann. S. Afr. Mus., xviii, 1921; Bezzi, in part, p. 278, The Bombyliidae of the Ethiopian Region, 1924; Paramonow, p. 82, Acad. d. Sc. d'~'Ukraine, No. 9 (Trav. Mus. ^ool., No. 11), 1931.) (Syn. = dilatata Bezzi, p. 157, Ann. S. Afr. Mus., xviii, 1921.) As in the case of dux the cospecificity of the two sexes of this species was a
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. REVISION OF THE BOMBYLIIDAE (DIPTERA) OF SOUTHERN AFRICA 819 Exoprosopa morosa Lw. (Loew, p. 232 and tab. ii, fig. 30, Dipt. Faun. Sildafr., i, i860; Bezzi, in part, p. 153, Ann. S. Afr. Mus., xviii, 1921; Bezzi, in part, p. 278, The Bombyliidae of the Ethiopian Region, 1924; Paramonow, p. 82, Acad. d. Sc. d'~'Ukraine, No. 9 (Trav. Mus. ^ool., No. 11), 1931.) (Syn. = dilatata Bezzi, p. 157, Ann. S. Afr. Mus., xviii, 1921.) As in the case of dux the cospecificity of the two sexes of this species was also not suspected, but in this case the $ which is very much similar to that of dux was described as a separate species (dilatata) by Bezzi. As in the case of dux. Text-fig. 249. Left: Side view of hypopygium and ventral view of detached aedeagal apparatus of $ Exoprosopa dux (Wied.). Right: Side and ventral views of more than front half of aedeagal apparatus of $ Exoprosopa morosa Lw. there is no doubt whatever that these <$$ (dilatata) with dimidiate wing-pattern are the <$$ of the ^.-morosa, agreeing with the latter in all other specific charac- ters. Moreover the late Mr. Bell-Marley of Natal caught the two sexes copulating. The species differs from dux in having no bands of white scales across base of tergite 2 and across 4 and 5; in having those on 6 and 7 medially often inter- rupted; a dark and not pale or white streak on sides of thorax; more numerous or more extensive black hairs on pleurae, in metapleural tuft and venter; mainly black scaling on venter; black on sides of face more extensive; a distinctly longer style which is usually more or much more than half length of joint 3; a relatively shorter apical vein of discoidal cell which is less S-curved; less produced apical part of discoidal cell; a characteristic stump or indication of one from lower vein of discoidal cell projecting into the cell; margin of infuscation in wings in £ straighter, without an in
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