<p> <strong> A revision of Afrotropical Quasimodo flies (Diptera: Schizophora; Curtonotidae). Part IV — the continental Afrotropical species of <em> Curtonotum </ em> Macquart, with descriptions of thirteen new species and a combined phylogenetic analysis of the Curtonotidae </ strong> </ p> Author Kirk-Spriggs, Ashley H. ashley.kirk-spriggs@nasmus.co.za Author Wiegmann, Brian M. ashley.kirk-spriggs@nasmus.co.za text Zootaxa 2013 2013-07-09 3684 1 1 166 http://dx.doi.org/10.11646/zootaxa.3684.1.1 journal article 10.11646/zootaxa.3684.1.1 1175-5326 5298914 E922034E-1247-400B-97F6-1778CF766B91 1.2.7. Curtonotum saheliense species-group Species included: 2 (Afrotropical / Palaearctic). Synapomorphy: Distiphallus with long, obliquely angled, posteriorly-directed spine basally (44). Tsacas (1977) included the two sister species, C . saheliense Tsacas and C . simile Tsacas , both of which are confined to xeric habitats bordering the Sahara and the Arabian Peninsula, in his cuthbertsoni species-group. As attested by the above-mentioned synapomorphy, they are here regarded as being sufficiently distinct to warrant inclusion in a species-group of their own.