Costal vein chaetotaxy, a neglected character source in Fanniidae and Muscidae (Diptera: Calyptratae) Author Michelsen, Verner 9BD4846E-F4D0-4DB2-A567-FAF0A58B6D98 Natural History Museum of Denmark, University of Copenhagen, Denmark. vmichelsen@snm.ku.dk text European Journal of Taxonomy 2022 2022-06-28 826 94 134 http://dx.doi.org/10.5852/ejt.2022.826.1839 journal article 86210 10.5852/ejt.2022.826.1839 ed37ce13-a67c-4146-b99e-db8ede0a145b 2118-9773 6784127 34BA1AB7-6107-4636-9645-B1C0216DCE5E Subfamily Cyrtoneurininae Snyder, 1954 This is essentially a Neotropical group extending into southern North America. It is rather heterogeneous and doubtfully monophyletic. Among the currently included 12 genera I have examined species from five of them ( Table 1 ). They all agree in having vein C extensively setulose ventrally. • Cyrtoneurina Giglio-Tos, 1893 , Cyrtoneuropsis Malloch, 1925 , Neomuscina Townsend, 1919 The examined species of the above genera share the prevalent muscid state A 4 in which vein C is bare dorsally and extensively setulose ventrally: Cyrtoneurina (2 spp indet.), Cyrtoneuropsis (8 spp), Neomuscina rufoscutella Dodge, 1955 and N. tripunctata Wulp, 1896 . • Arthurella Albuquerque, 1954 Among the two species examined, Arthurella nudiseta Albuquerque, 1954 has vein C extensively setulose dorsally (state A8 ), while A . choelensis Patitucci & Mariluis in Patitucci et al. , 2011 is without dorsal setulae on CS1 (state A7 ). • Pseudoptilolepis Snyder, 1949 The only examined species, P. confusa Snyder, 1949 , has vein C extensively setulose dorsally (state A8 ).