Coenosia duomaculata Couri & Pont, 2014, sp. nov.
Creators: name: Couri, Márcia
name: Pont, Adrian C.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Muscidae
Coenosia
Coenosia duomaculata

description: Coenosia duomaculata sp. nov.
Figs 1, 5–7.
Type material. Holotype ♀, KENYA: Rift Valley Prov., Timboroa Forest (compt. 9), 00˚04.092′N, 35˚30.909′E, 2628 m, Malaise traps, indigenous Afromontane forest, 14–16.iv.2011 (A.H. & M.K. Kirk-Spriggs), BMSA (D)32170 (NMKE).
Paratypes, 74♀. KENYA: same data as holotype, except: BMSA (D)31868, 31875, 31896, 31915, 31920, 31921, 31925, 31927, 31932, 32134, 32135, 32136, 32138, 32139, 32140, 32144, 32145, 32147, 32148, 32150, 32151, 32152, 32153, 32154, 32155, 32156, 32157, 32158, 32159, 32160, 32161, 32162, 32163, 32164, 32165, 32166, 32167, 32169, 32171, 32172, 32173, 32174, 32175, 32176, 32177, 32178, 32179, 32180, 32182, 32183, 32184, 32185, 32187, 32189, 32190, 32191, 32192, 32193, 32195, 32198, 32199, 32200 (all BMSA); 5♀, same, except: BMSA (D)32203, 32204, 32207, 32209, 32211 (all NMKE); 1♀, same, except: BMSA (D)32143 (BMNH); 2♀, same, except: BMSA (D)32149, 32196 (both MNRJ). KENYA: Rift Valley Prov., Nakuru/Eldoret road at: 00˚07.414′N, 35˚27.822′E, 2589 m, general sweeping, mixed forest, 13.iv.2011 (A.H. & M.K. Kirk-Spriggs, 1♀, BMSA (D)32621 (BMSA). BURUNDI: Kayanza Prov., Parc National de la Kibira, Rwegura Sector, 02˚55.320′S, 29˚30.067′E, 2237 m, 21–26.xi.2010, 1♀, BMSA (D)28092 (MNRJ); Malaise traps, indigenous Afromontane forest, 25–26.xi.2010 (A.H. Kirk-Spriggs), 2♀, BMSA (D)24706 (BMSA).
Diagnosis. Palpus yellow; prescutum with 2 well-separated brown maculae; anterior dorsal part of pleura yellow in ground colour, wholly pale dusted. The new species is morphologically close to C. poecilotarsis Emden, but can be easily separated by the presence in C. poecilotarsis of a black presutural transverse fascia, which is undivided although deeply incised posteriorly, the black palpus and a black patch covering the lower edge of postpronotal lobe, upper anterior corner of anepisternum and anterior spiracle.
Description. General colouration. Ground colour brown, pale grey dusted; head with frons velvety black, brown pruinose (viewed from certain angles); fronto-orbital plate, face and gena pale grey pruinose; antenna with scape and pedicel dark yellow, with grey pruinosity and postpedicel dark brown, arista brown; palpus yellow; notum (Fig. 1) with prescutum with 2 well-separated brown maculae; postpronotal lobe yellow; scutum and scutellum each with transverse brown fascia in basal ½; pleura pale dusted, with yellowish dusting in some areas; anterior spiracle yellow; wing with very faint brown longitudinal infuscation along costal vein; calypters white; haltere pale yellow, with whitish knob; legs with coxae yellow, pale dusted; femora yellow, brown on dorsal surface; tibiae yellow and tarsi brown (some specimens with femur and tibia brown with yellow areas); abdomen pale dusted with some yellowish areas and elliptical brown lateral maculae on all tergites; tergites 3–5 with median fascia.
♀. Measurements. Body length: 5.3 mm; wing length: 6.2 mm.
Head. Eye bare; frons at vertex ⅓ head width; 3–4 pairs of inclinate frontal setae, first and third from lunule shorter, and 1 pair of reclinate orbital setae; medial vertical seta extremely long; ocellar setae short; antenna inserted just above mid-level of eye, with postpedicel about 2.5 × length of pedicel; arista with very fine and short pubescence, longest setulae barely longer than basal width of arista; palpus with long ventral setulae.
Thorax. Dorsocentrals 1 + 3; acrostichal setulae in 2 sparse irregular rows, prescutellar pair undifferentiated; 1 postpronotal; 1 postsutural intra-alar developed (the posterior); 1 postsutural supra-alar; 2 postalars; prealar absent; notopleuron with 2 setae similar in size; anepisternum with a series of 3 long and 2 short setae; katepisternals 1 + 1 + 1, arranged in an equilateral triangle. Scutellum with 1 long basal and 1 long apical pairs of setae, similar in length, with a few ground setulae close to apex.
Legs. Fore femur with rows of posteroventral, posterior and posterodorsal setae, those in posterodorsal row stronger; fore tibia with 1 posterior median dorsal seta and 1 dorsal preapical, apical setae on posteroventral and posterior surfaces long; mid femur with 4–5 anterodorsal setae; posteroventral surface with closely spaced setae, without anteroventrals; 2 posterior preapicals; mid tibia with 1 median posterodorsal seta and 1 submedian anterodorsal; 1 dorsal preapical and anterodorsal, anterior, anteroventral, ventral and posteroventral apical setae, the last three stronger; hind femur with a row of about 4–5 well-separated anterodorsal setae and 1 preapical posterodorsal, 2 fine and long posteroventrals in basal ⅓, without anteroventrals, except for seta near base; hind tibia with strong anterior, anterodorsal and posterodorsal setae inserted proximally in median ⅓, but not at same level, 1 posterodorsal and 1 anterodorsal preapicals and 1 strong ventral apical.
Wing. Veins bare; veins M and R4+5 parallel at wing-tip; vein A1+CuA2 very short; lower calypter slightly larger than upper calypter, ca 1.5 × as long.
Abdomen. Syntergite 1 + 2 and tergites 3–5 each with 1 lateral pair of setae; tergites 4 and 5 with 2 additional median setae; sternite 1 bare.
Terminalia. Ovipositor long, with microtrichia on both sides (Figs 5–6); spermathecae pear-shaped as in Fig. 6; egg as in Fig. 7.
♂ Unknown.
Distribution. Kenya (Rift Valley forest, Mau Escarpment) and Burundi (Parc National de la Kibira).
Etymology. The specific epithet duomaculata is derived from the Latin duo (“two”) and maculatus (“maculate”), and refers to the two well-separated brown maculae present on the prescutum. It is an adjective in agreement with the feminine noun Coenosia.
Remarks. The type material was compared by ACP with the holotype of C. poecilotarsis in the BMNH. A second female of the same species named by Emden and also examined by ACP, also has these characters, but the femora are entirely black and the tibiae are mostly black with basal parts red to yellowish.
description: Published as part of Couri, Márcia & Pont, Adrian C., 2014, New species of Afrotropical Muscidae (Diptera: Muscoidea), pp. 301-320 in Zootaxa 3852 (3) on pages 302-305, DOI: 10.11646/zootaxa.3852.3.1, http://zenodo.org/record/229938