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 3. Muscina prolapsa fuscisquama ssp. nov. ( Figs 5C, D ) “ Muscina pascuourum (Meigen) ”; Becker 1908a: 112 (Gran Canaria, Tenerife); Santos Abréu 1976: 133 ff. (Canary Is.). Misidentifications. Muscina pabulorum (Fallén) ; Frey 1936: 136 (Tenerife); Hennig 1962: 762 ff. (Gran Canaria, Tenerife); Kirchberg 1967: 334 (La Gomera, Hierro); Báez 1983: 179 ff., pl. 3 figs 1, 2 (Gran Canaria, Tenerife, Hierro). Muscina prolapsa (Harris) ; Pont 1986: 60 ff. (p.p., Canary Is.); Vikhrev & Esin 2023: 38 (Tenerife). Taxonomic note. The western Canary Islands are populated by a distinctive bluish black colour form of Muscina prolapsa that has earlier been taken for the widespread Holarctic and northern Oriental Muscina pascuorum (Meigen) , but that species differs by the expanded lower calypteres, presence of setulae on anterior half of notopleuron and stronger forward curvature of vein M1+2. Hennig (1962) pointed out that the Canarian “ Muscina pascuorum ” belongs to Muscina prolapsa [as M. pabulorum ]. He also noted that the Canarian population deviates substantially from continental specimens in respect to colour and stated that it might deserve status as a separate subspecies. We agree and here recognize the Canarian population as a subspecies of Muscina prolapsa . Material examined. CANARY ISLANDS : Type material [ NHMD ] ( holotype ♂ , paratypes 4♂ , 4♀ ) : LA PALMA : Tigalate , 28°32’N 17°48’W , 680m , holotype ♂ 10‒21.i.2013 ( V. Michelsen ) ; GRAN CANARIA : El Valle , 27°54’N 15°32’W , 730‒935m , 1♂ 19‒24.i.2017 ( V. Michelsen ) ; San Isidro , 28°01’N 15°33’W , 910‒975m , 1♀ 13‒18.i.2014 ( V. Michelsen ) ; TENERIFE : Los Carrizales , 28°19’N 16°51’W , 350‒700m , 1♂ , 1♀ 10‒16.i.2012 ( V. Michelsen ) ; LA GOMERA : La Laja , 28°06´N 17°11´W , 480‒600m , 1♂ 22‒29.i.2016 ( V. Michelsen ) ; Roque Blanco , 28°10´N 17°14´W , 700–900m , 1♂ , 2♀ 30.1‒ 5.ii.2020 ( V. Michelsen ). Other material [ NHMD , MZH ] . TENERIFE : Tacoronte , 1♂ 1931 ( R. Frey ) ; La Zarza , 1♂ 20.i.2006 ( V. Michelsen ) ; Guayonge , 28°29´N 16°24´W , c. 420m , 3♂ 16.ii.2008 ( V. Michelsen ) ; Cueva del Viento , 28°20´N 16°43´W , c. 800m , 1♀ 14.ii.2008 ( V. Michelsen ) ; Las Portelas , 28°19’N 16°50’W , 830‒860m , 1♂ 16.i.2012 ( V. Michelsen ) ; Carrizal Alto , 28°19’N 16°51’W , 640‒ 730m , 1♂ , 1♀ 30.i‒3.ii.2016 ( V. Michelsen ) . LA GOMERA : Las Carretas , 1♂ 1.xii.2006 ; La Palmita , 1♂ 3.ii.2008 ( V. Michelsen ) . LA PALMA : Las Tricias , 28°47´N 17°58´W , 660m , 1♂ 11‒16.i.2013 ( V. Michelsen ) . Description. Closely agreeing with the nominal subspecies of Muscina prolapsa in all respects other than colour (cp. Figs 5A, B and 5C, D ): Calypteres grey with blackish margins and dark fringes ( vs. calypteres white with white fringes except for a tuft of dark hairs at lateral base of upper calypter); dorsum of thorax and abdomen covered in thin bluish white pruinosity ( vs. dorsum of thorax and abdomen covered in dense white pruinosity); shifting dark reflections on abdomen obsolete ( vs. shifting dark reflections on abdomen prominent). Distribution. Endemic to the western Canary Islands : Gran Canaria, Tenerife, La Gomera, Hierro and La Palma.