Phylogeny and Taxonomy of the Risa Genus-group (Diptera: Ephydridae), with Description of a New Genus from Australia Author Mathis, Wayne N. Department of Entomology, PO BOX 37012, MRC 169, Smithsonian Institution, Washington, DC 20013 - 7012, United States of America Author Zatwarnicki, Tadeusz Institute of Biology, Opole University, ul. Oleska 22, 45 - 052 Opole, Poland text Records of the Australian Museum 2023 Rec. Aust. Mus. 2023-03-15 75 1 1 23 http://dx.doi.org/10.3853/j.2201-4349.75.2023.1823 journal article 10.3853/j.2201-4349.75.2023.1823 2201-4349 7946210 Risa (Achaetorisa) brevicornis Papp comb. nov. Figs 24 , 35 Achaetorisa brevicornis Papp, 1980: 421 [ Morocco . Marrakech : Ouirgane ( 31°11.7'N 08°4.4'W ); HT , USNM]; 1984: 178 [Palearctic catalog]. Achaetorisa salsolae Mathis & Zatwarnicki, 2017: 646 [ United Arab Emirates . Ajman (N; 25°25.7'N 55°30.1'E ; salt marsh); HT]. Distribution . Palearctic: Israel / Jordan , Morocco , Spain . Natural history . This species is associated with Halogeton sativus (L.) Moq. ( Amaranthaceae ).