Taxonomic revision of the Afrotropical Phytomia Guérin-Méneville (Diptera: Syrphidae) Author Meyer, Marc De Royal Museum for Central Africa, Invertebrates Section and JEMU, Leuvensesteenweg 13, B 3080 Tervuren Belgium. Author Goergen, Georg Author Jordaens, Kurt Royal Museum for Central Africa, Invertebrates Section and JEMU, Leuvensesteenweg 13, B 3080 Tervuren Belgium. & kurt. jordaens @ africamuseum. be; https: // orcid. org / 0000 - 0003 - 4321 - 5944 text Zootaxa 2020 2020-06-26 4803 2 201 250 journal article 10.11646/zootaxa.4803.2.1 1175-5326 3909047 0C0F5754-9530-4072-AF45-BDFE4A8A2B57 Phytomia bezzii Curran ( Figs 7 , 33 , 45–46 , 69 , 90 ) Phytomia bezzii Curran, 1927a: 78 Material examined . HOLOTYPE : ♀ , CONGO (DR), Stanleyville [=Kisangani], March 1915 , Lang & Chapin ( AMNH ) . PARATYPE : CONGO (DR), Stanleyville [=Kisangani], 1♀ , 7.IV.1915 , Lang & Chapin ( AMNH ); 1♀ , 9.IV.1915 , Lang & Chapin ( KMMA ). (Two paratypes ( CONGO (DR), Medje , 1♀ , 25–30.VIII.1910 ( KMMA ); 1♀ , 11–14.VI.1910 ( AMNH ), both Lang & Chapin ) do not belong to P. bezzii but are specimens of P. bulligera ). Other material: CAMEROON , 1♂ , Lolodorf , 8.III.1911 , A.I. Good ( CNC ) . CENTRAL AFRICAN REPUBLIC , 1♀ , La Maboke , 31.III.1970 , M. Boulard ( MNHN ) . CONGO (DR), Eala , 1♀ , November 1935 ( KMMA ) ; 1♂ , 24.VI.1935 ( KBIN ) ; 1♂ , October 1935 ( KBIN ) , all J. Ghesquière. GHANA , 1♀ , Obuasi , 2.VII.1907 , W.H. Graham ( BMNH ) . TOGO , 1♂ , Dzogbégan , 17.V.2015 , G. Goergen ( IITA ) ; Kloto , 1♂ , November 2007 ; 1♀ , January 2016 ; 1♂ , De- cember 2016, all G. Goergen ( IITA ) ; 3♂ 1♀ , January 2016 , G. Goergen ( KMMA ) . Body size . Body length (n=10): 12.4–13.5 mm . Wing length (n=10): 9.0– 10.3 mm . Redescription . MALE ( Fig. 7 ). Head . Eye bare; holoptic, touching for about twice length of ocellar triangle, facets enlarged in dorsal half. Frons brown to black; with greyish brown pollinosity; dispersed pilosity of medium long pale pile, dorsally longer and darker; rugose area shining black–brown, occupying one-third of entire width and two–fifths of entire height; with shorter dispersed pale pile. Face ground colour black; with dispersed greyish to greyish brown pollinosity, in parts weakly shining black; dispersed pilosity of short pale pile; facial tubercle elongated, moderately to strongly pronounced. Gena colour and pollinosity as face; with long pale pilosity. Occiput dorsal third black, with greyish pollinosity; ventrally more densely yellow-white, with dispersed pale pile. Antennal segments brown to black-brown; arista yellow-brown, in basal half with medium long pile equal to width of pedicel. Thorax . Scutum and scutellum black ground colour, with dense greyish to greyish-brown pollinosity in anterior half of scutum, posterior part weakly shining black; covered with dense pile of long pale yellowish to greyish pilosity. Pleural sclerites ground colour black, with greyish brown pollinosity; covered with dispersed pile of pale yellow to yellow-orange pile except meron, anterior part of katepisternum and anterior anepisternum. Legs . Yellow-orange to black-brown. Fore leg, femur black brown, apical margin narrowly paler; with dense short black pilosity, anteriorly and posteriorly longer and pale in basal third; tibia pale in basal third, otherwise orange-brown; with short black pilosity, except in basal third where pale; tarsal segments yellow-orange. Mid leg as in fore leg, except tibia pale for basal half, and pilosity pale over entire length. Hind leg ( Fig. 33 ), femur slightly thickened; black-brown; dorsally with long pale pilosity, ventrally with long pilosity pale in basal half and dark in apical half, otherwise short dark pilosity; tibia orange-brown to black brown, sometimes pale at basal tip; dorsally with short pale pilosity in basal third, distally black, ventrally with short to medium-long dense black pilosity; tarsal segments yellow-orange to dark orange. Wing ( Fig. 45 ). Mainly hyaline. Microtrichia along base; also patch in medial part of wing anteriorly from apex of vein Sc , posteriorly along medial part of cell r 1 , basal part of cell r 2+3 , and into cell r where it reaches the junction of vein M with crossvein bm-cu . Calypters dark with fringe of dark pile. Abdomen ( Fig. 69 ). Mainly black-brown ground colour, sometimes partly more dark rufous. Terga 2–4 with black-brown pollinosity and shining medial bulla; pilosity with dispersed short to medium long pale to yellowish pile, longer along margins. Sterna black-brown, with widely dispersed long pale pile. Male genitalia as in Fig. 90 . FEMALE . As male except for the following character states. Eye, facets of equal size; dichoptic. Frons black ground colour; with greyish brown pollinosity, except in dorsal third where dark brown; covered with short dispersed pale to yellowish pile, except in dorsal third where predominantly black; rugose area shining brown; occupying one-third of entire width and equal in height to at most twice length of ocellar triangle. Wing ( Fig. 46 ) more extensively covered with microtrichia, covering anterior half to two-thirds of wing surface, in addition to medial patch along cross-vein r-m more densely, sometimes covering most of wing surface except for posterior margin. Distribution . Cameroon , Central African Republic , Congo (DR), Ghana , Togo . Comments . When describing P. pubipennis , based on a specimen from Uganda , Bezzi (1915) already pointed out that an additional specimen (collected in Obuasi, Ghana ) was related but differed in a number of morphological characters, considering it a melanic form. Curran (1927a) described P. bezzii , based on a series of specimens collected in Congo (DR) but explicitly refers to the melanic form of P. pubipennis , as recognized by Bezzi, and states that this is the same species. He, however, did not include the specimen from Ghana in the type series.