Heteralonia (Acrodisca) umbrosa (Loew) Exoprosopa umbrosa Loew, 1860: 194. Distribution. Angola, Botswana, Malawi, Namibia, South Africa (Eastern Cape, Mpumalanga), Tanzania, Zimbabwe. Material examined. 1♂, Katuma Mulilo District, Salambala camp site, 17°50'01"S 24°36'09"E, 22–24.ii.2001, A.H. KirkSpriggs & E. Marais, Malaise trap sample; 1♂, Katima Mulilo District, Salambala 4 km NE of, 17°49'21"S 24°36'07"E, 25.iii.–1.iv.2001, A.H. KirkSpriggs & E. Marais, Malaise trap sample; 4♂♂, Kavango, Popa Falls, 18°07'S 21°04'E, 26.ii.–1.iii.1992, E. Marais & M. Pusch.Published as part of Greathead, David J., 2006, New records of Namibian Bombyliidae (Diptera), with notes on some genera and descriptions of new species, pp. 1-88 in Zootaxa 1149 (1) on page 76, DOI: 10.11646/zootaxa.1149.1.1, http://zenodo.org/record/505808