New species of Afrotropical Muscidae (Diptera: Muscoidea) Author Couri, Márcia Author Pont, Adrian C. text Zootaxa 2014 3852 3 301 320 journal article 10.11646/zootaxa.3852.3.1 957e5d0f-c452-4d45-85cf-24f138ab2359 1175-5326 229938 13B15A57-576A-4617-9D8A-7F27D970315A Coenosia fragilis sp. nov. Figs 10–12 . Type material . Holotype ♂, DEMOCRATIC REPUBLIC OF THE CONGO : Oriental Prov., Lieki village area at 00°41.117′N , 24°14.362′E , sweeping bush paths & village environs, 25.v–4.vi.2010 (A.H. Kirk-Spriggs), BECE 02922 ( ISNB ). Paratype , 1♂ . DEMOCRATIC REPUBLIC OF THE CONGO : same data as holotype , except: BECE 02918 ( BMSA ). Diagnosis. Very small species; ground-colour brown with metallic reflexion, including legs; ocellar seta strong; frontal vitta, fronto-orbital plate, face, parafacial and gena densely yellowish silvery pruinose (viewed from certain angles); palpus brown. The new species belongs to the C . niveifrons species-group sensu Emden (1940) . In Emden’s (1940) key, it runs to couplet 14 (17), due to the presence of strong ocellars, but is not C . multisetosa Emden or C . fumisquama Stein , which also have dark head pruinosity and long frontal setae. Description . General colouration . Ground colour brown, with metallic reflexion; frontal vitta, fronto-orbital plate, face, parafacial and gena densely yellowish silvery pruinose (viewed from certain angles); antenna black; palpus brown; notum dark brown, matt; prescutum including postpronotal lobe and notopleuron and anterior ½ of scutum, with silvery reflexion (viewed from certain angles); pleura thinly grey dusted, with metallic reflexion; spiracles dull; wing hyaline; calypters white, lower one yellowish around margin; haltere brown; legs black, femora and tibiae shining; abdomen dark brown, with some grey dust on sides of tergites; epandrium shining black. ♂. Measurements . Body length: 2.2 mm ; wing length: 2.2 mm . Head . Eye bare, frons at vertex a little more than ⅓ of head-width, markedly narrowing to lunule; 3 pairs of fine frontal setae, the second one from lunule short, and 1 fine reclinate orbital; inner vertical seta long; ocellar seta long; antenna inserted above mid-level of eye, with postpedicel about 1.5 the length of pedicel; arista with very fine and short pubescence, hardly as long as width of arista at base; palpus filiform, with apex a little flattened and enlarged. Thorax . Dorsocentrals 1 + 3; acrostichal setulae short and sparse, in 2 irregular rows, prescutellar slightly longer than others; 1 postpronotal; 2 postsutural intra-alars; 1 postsutural supra-alar; 2 postalars; prealar absent; notopleuron with 2 setae similar in size; anepisternum with series of 6 setae, most long; katepisternals 1 + 1 + 1, arranged in equilateral triangle, dorsal posterior seta very long. Scutellum with 1 basal and 1 long apical pair of setae, the basal ca ⅔ length of the apical. Legs . Fore femur with row of well-spaced setae on posteroventral and posterodorsal surfaces; fore tibia with long posterior median seta, 1 dorsal and 1 long fine anterodorsal preapical and 1 apical seta on posterior, posteroventral and posterodorsal surfaces; mid femur with ca . 4 fine anterior to anterodorsal setae; anteroventral surface with row of fine setae in basal ⅔, with a few longer sparse posteroventrals, 2 posterior preapicals; mid tibia with 1 anterodorsal and 1 posterodorsal median setae; hind femur with sparse rows of anterodorsal and anteroventral setae, 2 fine posteroventrals in apical ½, 1 preapical posterodorsal seta; hind tibia with 1 anterodorsal and 1 anterior median setae, 1 long dorsal and 1 anterodorsal preapical and 1 apical ventral. Wing . Veins bare; veins M and R4+5 parallel at wing-tip; lower calypter long, ca . 2.3 × length of upper. Abdomen . Tergite 5 with 4 marginal setae; sternite 1 bare; sternite 5 as in Fig. 10 . Terminalia . Cercal plate with 5 strong spines ( Fig. 11 ); epandrium, cercal plate, surstylus and aedeagus as in Fig. 12 (lateral view). ♀ Unknown. Distribution . Democratic Republic of the Congo (Oriental Province). Etymology . The specific epithet fragilis is a Latin adjective (“fragile”) and refers to the small size of the species.