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 Tribe Stomoxyini Meigen, 1824 The specialized mouthparts of this group of hematophagous muscids leave no doubt as to their monophyly. Among the 10 currently recognized genera I have examined species belonging to five of them ( Table 1 ). • Haematobia Le Peletier & Serville in Latreille et al. , 1828 The examined species Haematobia exigua Meijere in Schat, 1903, H. irritans (Linnaeus, 1758) and H. minuta (Bezzi, 1892) , have vein C extensively setulose ventrally (state A4 ), but one examined species or subspecies ( Haematobia thirouxi titillans (Bezzi, 1907)) has the ventral costal setulae confined to CS1 (state A2 ). • Haematobosca Bezzi, 1907 Among the five examined species, Haematobosca alcis (Snow, 1891) and H . sanguisugens (Austen, 1909) , stat. rev. , have vein C extensively setulose ventrally (state A4 ), H. sanguinolenta (Austen, 1909) and H . stimulans (Meigen, 1824) have the ventral costal setulae confined to CS1 (state A2 ), and Haematobosca atripalpis (Bezzi, 1895) has the ventral setulae confined to the basal half of CS1 (state A1 ). • Neivamyia Pinto & Fonseca, 1930 The only examined species, Neivamyia flavicornis (Malloch, 1928) , has the ventral costal setulae confined to CS1 (state A2 ). • Stomoxys Geoffroy, 1762 In most examined species ( Stomoxys calcitrans (Linnaeus, 1758) , S. inornatus Grünberg, 1906 , S. niger Macquart, 1851 , S. pallidus Roubaud, 1911 , S. sitiens Rondani, 1873 and S. taeniatus Bigot, 1888 ) vein C is extensively setulose ventrally (state A4 ), but in one species ( Stomoxys indicus Picard, 1908 ) the ventral costal setulae are confined to CS1 (state A2 ). • Stygeromyia Austen, 1907 In the only examined species, Stygeromyia sanguinaria Austen, 1909 , vein C is bare ventrally except for single setulae at the extreme base of CS1 (state A0 ).