Hercostomus perturbus Curran, 1924 Hercostomus perturbus Curran, 1924: 225. Type locality: South Africa, Gauteng, Pretoria, Fountains. Material examined SOUTH AFRICA • 1 ♂; KwaZulu-Natal, Royal Natal National Park, Mahai River; 28°41.364′ S, 28°56.335′ E; 1449 m a.s.l.; 17–18 Feb. 2010; A.H. Kirk-Spriggs leg.; Malaise trap (2), straddling Mahai River indigenous forest; BMSA • 1 ♂, 1 ♀; Western Cape, Tsitsikamma National Park, Bloukrans Pass; 33°56.558′ S, 23°37.566′ E; 22–25 Jan. 2009; A.H. Kirk-Spriggs and S. Otto leg.; sweeping, forest paths, indigenous forest; BMSA • 4 ♂♂; Eastern Cape, Tsitsikamma National Park, Storms River mouth; 34°01.239′ S, 23°53.744′ E; 20 Jan. 2009; A.H. Kirk-Spriggs leg.; sweeping, indigenous forest, stream margins; BMSA. Ecology According to the label data of the above specimens, imagos inhabit forest paths and stream margins in indigenous forests. Distribution South Africa.

Published as part of Grichanov, Igor Ya., 2020, New species of Hercostomus Loew, 1857 from Afrotropics (Diptera: Dolichopodidae) and key to Afrotropical fauna, pp. 16-36 in European Journal of Taxonomy 722 on page 31, DOI: 10.5852/ejt.2020.722.1131, http://zenodo.org/record/4122305