@article{Grichanov_2020, title={New species of Hercostomus Loew, 1857 from Afrotropics (Diptera: Dolichopodidae) and key to Afrotropical fauna}, volume={722}, url={https://europeanjournaloftaxonomy.eu/index.php/ejt/article/view/1131}, DOI={10.5852/ejt.2020.722.1131}, abstractNote={<p>Five new species of <em>Hercostomus</em> Loew, 1857 from Kenya, Namibia, Tanzania and South Africa are described and illustrated. They belong to the <em>Hercostomus longiventris</em> lineage, which also appears similar to the Palaearctic <em>H. chetifer</em> subgroup and the Oriental <em>H. takagii</em> and <em>H. absimilis</em> groups on the basis of the modified male fore tarsus. The male cercus of almost all Afrotropical species is remarkable in having ventral processes or projections and are conditionally divided into <em>H. nectarophagus</em> and <em>H. perturbus</em> subgroups on the basis of the presence of one or two ventral projections on the cercus, respectively. <em>Hercostomus brandbergensis</em> sp.&nbsp;nov. and <em>H. fedotovae</em> sp.&nbsp;nov. are associated with the <em>H. nectarophagus</em> subgroup; <em>H. koshelevae</em> sp.&nbsp;nov., <em>H. vikhrevi</em> sp. nov., and <em>H. sanipass</em> sp. nov. are associated with the <em>H. perturbus</em> subgroup. The new species differ by fine structures of the male fore tarsus, cercus and postgonite. An identification key to males of 23 Afrotropical species of <em>Hercostomus</em> is compiled for the first time. New records are given for some known species.</p>}, number={1}, journal={European Journal of Taxonomy}, author={Grichanov, Igor Ya.}, year={2020}, month={Oct.}, pages={16–36} }