Coenosia altaica Sorokina, 2009, sp. nov.
Creators: name: Sorokina, Vera S.
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Muscidae
Coenosia
Coenosia altaica

description: Coenosia altaica sp. nov.
Figs. 11 A–F
Diagnosis: The species is very similar to Coenosia gracilis Stein. The new species can be recognised as follows: frons with 3 pairs of frontal seta, male abdomen with brownish marks, mid femur with 2–3 pv and 1– 2 av in basal half, mid tibia with 1 strong ad, hind femur with 2 pv in basal half, hind tibia with short pd or, in female, sometimes without pd, different terminalia.
Etymology. The species name is based on the type-locality, Respublika Altay.
Type material examined: Holotype 3, Respublika Altay, Ukok plateau, Akkol river, 2160m, 49°25'N 87°37'E, 12.07.2006, V. Sorokina (SZNM). Paratypes 1 3 9 Ƥ, same data as holotype (SZNM, ZMUM); 2 Ƥ, Respublika Altay, Ukok plateau, environs of Muzdy-Bulak lake, 2400m, 49º17'N 87º39'Е, 27, 28.06.2005, V. Sorokina (SZNM, ZMUM); 1 3, Respublika Altay, Ukok plateau, Zerlukol’-Nur lake, 2300m, 49º34'N 88º13'Е, 23.06.2005, V. Sorokina (SZNM); 1 3 1 Ƥ, Respublika Altay, Ukok plateau, 6–8km NE Maitobe mountain, 2400–2700m, 49°34'N 87°43'E, 8.07.2006, T. Novgorodova, V. Sorokina (SZNM); 1 3 1 Ƥ, Respublika Altay, Ukok plateau, environs of Kal’dzhin-Kul’-Bas lake, 2400m, 49°19'N 87°26'E, 17, 21.07.2006, T. Novgorodova, V. Sorokina (SZNM); 1 3 1 Ƥ, 19km SE Dzhazator, 2115m, 49°37'N 87°39'E, 5.07.2006, V. Sorokina (SZNM); 1 3, Respublika Altay, Shapshal’skiy mountain range, 2878m, 50º32'N 89º48'E, 24.07.2007, V. Sorokina (SZNM).
Description: Male: body 3.5–3.7mm, wing 3.4–3.5mm.
Head: Ground-colour black with dense whitish-grey pruinosity. Mouthedge not projecting beyond level of profrons or only insignificantly projecting (Fig. 11 F). Eyes widely separated by a black frontal vitta. Frontal vitta 3 times as wide as a fronto-orbital plate. Frontal triangle becoming very narrow at middle and reaching front margin of frons. Frons with 3 pairs of frontal setae, middle seta a little shorter than the other two setae. Width of parafacial at level of base of antenna about as wide as postpedicel and becoming a little narrower at middle. Height of gena 1.5 times width of postpedicel. Antenna black, postpedicel ca. 2.5 times as long as wide. Arista black, short-pubescent, with longest individual hairs shorter than basal diameter of arista. Palpus brownish or black. Proboscis long, shining, with strong apical teeth.
Thorax: Black, densely whitish-grey dusted. Prosternum bare. Ground-setulae of postpronotal lobe setulose, not spinulose. Scutum with 2 distinct brown longitudinal vittae along dc and with an indistinct brownish vitta between ph and ps seta on each side. Presutural acr in 2 uneven rows; 1 + 3 dc. Two proepisternal setae. Apical and basal scutellars well developed and equal.
Legs: All black with grey dust with the exception of yellow trochanters, joints and basal 1/3 of tibiae. Pulvilli not elongate. Fore tibia with 1 strong long p. Mid femur with 2–3 pv (one seta longer then others) and 2 short av on basal half, with 1 strong a and 2 strong p preapical setae. Mid tibia with 1 ad, 1 pd. Hind femur with 4 av and 1 short pv on basal half and 1 long pv near middle. Hind tibia with 1 short av, 1 strong ad and 1 short pd; median av and ad not close together, preapical ad and d long and strong, subequal in length to median ad, distinct preapical pd not developed, with only 2 weak and short setae below preapical d..
Wing: Light coloured, with a slight yellow tinge. Costa with weak spinules. Calypters white; lower one hardly longer than upper one. Haltere light yellow.
Abdomen: Black with thick whitish-grey dust, elongate, cylindrical. Tergites 3–5 with pairs of indistinct brownish rounded spots. Sternite 1 bare.
Terminalia: as in Figs. 11 A, 11B.
Female: body 4.2–4.7mm, wing 3.8–4.3mm.
Similar to male, but differing from it as follows: frons with 2 pairs of strong frontal setae and one half as long as these between these setae. Scutum with brownish-grey dust. Haltere yellowish. Mid and hind tibiae black except for yellow bases, fore tibia yellow in basal quarter. Hind femur with 3 av, hind tibia without pd or with very short pd. Abdominal spots indistinct or absent.
Ovipositor: as in Figs. 11 C –E.
Distribution: Russia, Respublika Altay.
description: Published as part of Sorokina, Vera S., 2009, A key to Siberian flies of the genus Coenosia Meigen (Diptera, Muscidae) with the descriptions of three new species, pp. 1-28 in Zootaxa 2308 on pages 15-17, DOI: 10.5281/zenodo.191812