Macaronesian Muscidae (Diptera). V. The genera Phaonia Robineau-Desvoidy and Muscina Robineau-Desvoidy Author Michelsen, Verner Natural History Museum of Denmark, University of Copenhagen, Denmark Author Pont, Adrian C. 0000-0003-4541-9182 text Zootaxa 2024 2024-05-30 5458 4 581 596 http://dx.doi.org/10.11646/zootaxa.5458.4.6 journal article 298625 10.11646/zootaxa.5458.4.6 6d35be3f-813a-4749-900a-caea6b70a980 1175-5326 11548064 72DE7B50-ABD3-4C4F-83B1-ADCAA4A1ABEA 4. Phaonia trimaculata sordidisquama Stein , stat. nov. ( Figs 3B–F ) Phaonia sordidisquama Stein ; Becker 1908a: 94 ff. (Gran Canaria, Tenerife); Frey 1936: 135 (Gran Canaria, Tenerife); Hennig 1963c: 872 (Gran Canaria, Tenerife); Santos Abréu 1976: 163 ff., fig. 24 (Gran Canaria, Tenerife); Báez 1983: 184 ff., pl. 4 figs. 5, 6 (Gran Canaria, Tenerife, Hierro). Taxonomic note. This western Canarian taxon is morphologically inseparable from the variable and widespread central and western Palaearctic Phaonia trimaculata . Hennig (1963a) used colour differences and the absence of setulae on meron to separate Phaonia sordidisquama from P. trimaculata , but we found that the number of meral setulae varies from 0–4 in both taxa. Because of its distinctive colour we rank the Canarian population as a subspecies of P. trimaculata . Material examined. CANARY ISLANDS : [ BMNH , MZH , NHMD ] GRAN CANARIA: Moya , 1♀ 26.viii.1931 ( R. Storå ) ; Tasarte , 27°54’N 15°46’W , 270m , 2♂ 22‒25.xi.2014 , 3♂ 28‒30.xi.2014 ( V. Michelsen ) ; El Valle , 27°54’N 15°32’W , 730‒935m , 4♂ , 2♀ 19‒24.i.2017 ( V. Michelsen ) ; Bco Guayadeque , 27°56´N 15°29´W , 550‒1000m , 2♂ 21.xi.2014 ( V. Michelsen ) ; La Montaña , 27°55´N 15°33´W , 690‒710m , 4♂ , 1 ♀ 1‒6.ii.2018 ( V. Michelsen ) ; El Risco , 28°02’N 15°43’W , 150‒200m , 1♂ , 1♀ 7‒12.i.2014 ( V. Michelsen ) ; La Rueda , 27°54’N 15°33’W , 580m , 1♂ 25‒30.i.2018 ( V. Michelsen ) . TENERIFE : Las Mercedes , 1♀ 17.viii.1931 ( R. Storå ), 1♀ 3.vii.1974 ( M. Báez ) ; Tacoronte , 1♂ 1931 ( R. Frey ) ; San Diego , 1♂ 8.ii.1953 ( J.M. Fernández ) ; Arico , 1♀ 16.i.2006 ( V. Michelsen ) ; La Zarza , 3♂ 20.i.2006 ( V. Michelsen ) ; Los Carrizales , 28°19’N 16°51’W , 350‒700m , 4♂ , 1♀ 9‒10.ii.2008 , 4♂ , 2♀ 18‒23.i.2012 ( V. Michelsen ) ; Carrizal Alto , 28°19’N 16°51’W , 640‒730m , 1♂ 30.i‒3.ii.2016 ( V. Michelsen ) . LA GOMERA : Agulo , Lepe , 4♂ , 1♀ 11‒13.i.2006 ( V. Michelsen ) ; La Laja , 28°06´N 17°11´W , 480‒600m , 2♂ 22‒29.i.2016 ( V. Michelsen ) . Los Loros , 28°09’N 17°16’W , 520‒770m , 7♂ , 6♀ 31.i‒7.ii.2008 , 2♂ , 1♀ 18‒23.i.2012 ( V. Michelsen ; Roque Blanco , 28°10´N 17°14´W , 700-900m , 3♂ 30.1‒ 5.ii.2020 ( V. Michelsen ) ; Lomito Fragoso , 28°07’N 17°10’W , 220‒250m , 1♂ , 2♀ 19‒24.i.2019 , 1♂ 24‒29.i.2020 ( V. Michelsen ). Description. Only distinguished from the nominal subspecies by colour differences: Darker grey pruinosity of the body with a distinct bluish tinge, along with the dark-tipped scutellum, blackish infuscated calypteres and brownish halter. Legs extensively black, sometimes with hind tibia translucent reddish brown. Male frons possibly less variable than in P. trimaculata , at narrowest point slightly narrower than distance between posterior ocelli inclusive and fronto-orbital plates always separated by frontal vitta. Likewise, 1–2 p setae apparently always present on fore tibia. Katepimeron with 0–3 fine setulae as in P. trimaculata . The male terminalia ( Figs 3D–F ) agree closely with those of the nominal subspecies. Distribution. A Canarian subspecies found exclusively on the western islands Gran Canaria, Tenerife, La Gomera, Hierro and La Palma.