The beach flies of the Mascarene Islands (Diptera: Canacidae: Tethininae) Author Munari, Lorenzo c / o Entomology Section, Museo di Storia Naturale, S. Croce 1730, Venezia, Italy. Author Kirk-Spriggs, Ashley H. Senior Curator in Charge of Diptera and Siphonaptera, Department of Life Sciences, Natural History Museum, Cromwell Road, London SW 7 5 BD, United Kingdom. Author Mcgregor, Gillian K. Geography Department, Rhodes University, Grahamstown 6140, South Africa. text Zootaxa 2020 2020-09-22 4853 2 183 198 journal article 9109 10.11646/zootaxa.4853.2.2 665c72da-8a91-438a-ac00-4d39ce709306 1175-5326 4410564 5FCB7B3D-DE8C-441D-96A4-5B71D73415B1 Dasyrhicnoessa sp. Material examined : 1♀ , Mauritius : Black River , Petite Case Noyale , 20°24′23″S , 57°22′10″E , 1–3 m , 28.i.2018 , A.H. Kirk-Spriggs & B.S. Muller , sweeping intertidal zone and coastal vegetation (deposited BMSA ) . Comments : A single female specimen, with a distinctly narrow gena and moderately depressed head. This specimen cannot currently be assigned to a given specific taxon.