A survey of grassland Asilidae (Diptera) at Jacana Eco Estate, Hilton, South Africa Author Londt, Jason G. H. KwaZulu-Natal Museum, P. Bag 9070, Pietermaritzburg, 3200, South Africa & School of Biological & Conservation Sciences, University of KwaZulu-Natal, Pietermaritzburg, South Africa londtja@telkomsa.net text African Invertebrates 2020 61 1 29 48 http://dx.doi.org/10.3897/AfrInvertebr.61.50895 journal article http://dx.doi.org/10.3897/AfrInvertebr.61.50895 2305-2562-1-29 4B0D39243E014D3A9EDCF6CBA335159F 1CCA7F4D3CB555A98C0DA976F578DA16 17. Dasophrys fortis Londt, 1981 Fig. 6 Remarks. Londt (1981) revised the genus and provided a key for the identification of species. However, the key requires male specimens. Although the single female, swept from grass in week 51 of the survey, cannot be keyed out confidently, its rather short ovipositor (length:breadth ratio ca. 2.3) suggests that it belongs to the grassland species D. fortis Londt, 1981. For the present, this Jacana female will be assigned to D. fortis until this identification can be disproved. This female is almost certainly confined to Londt's (1994) ecological category 4a (within grass). Table 4 provides a comparison of flight periods with those recorded from Queen Elizabeth Park ( Londt 2002b ) where it was only collected on week 13.