taxonID	type	description	language	source
03E53E5EFFF5FFE035FF98C0C5F6FD71.taxon	description	Figs 1 – 6	en	Krasheninnikov, A. B., Vshivkova, K. A. (2022): A new species of the genus Hydrobaenus Fries, 1830 (Diptera: Chironomidae) from the Arctic Russia. Far Eastern Entomologist 454: 1-6, DOI: 10.25221/fee.454.1, URL: http://dx.doi.org/10.25221/fee.454.1
03E53E5EFFF5FFE035FF98C0C5F6FD71.taxon	materials_examined	TYPE MATERIAL. Holotype – ♂, Russia: Nenets Autonomous Okrug, Yugorsky Peninsula, Pay-Khoy Range, nameless stream, a tributary of the Peschanaya River near its estuary, 69,745056 º N, 61,812861 º E, h = 9 m, 16. VII 2013, leg. A. B. Krasheninnikov (CCK). Paratypes: 1 ♂, Yugorsky Peninsula, Pay-Khoy Range Amderma River, 69,726694 º N, 61,715056 º E, h = 6 m, 14. VII 2013, leg. A. B. Krasheninnikov (CCK); 1 ♂, Pay-Khoy Range nameless stream on the coast of the Kara Sea, 69,765056 º N, 61,753222 º E, h = 5 m, 26. VII 2013, leg. A. B. Krasheninnikov	en	Krasheninnikov, A. B., Vshivkova, K. A. (2022): A new species of the genus Hydrobaenus Fries, 1830 (Diptera: Chironomidae) from the Arctic Russia. Far Eastern Entomologist 454: 1-6, DOI: 10.25221/fee.454.1, URL: http://dx.doi.org/10.25221/fee.454.1
03E53E5EFFF5FFE035FF98C0C5F6FD71.taxon	diagnosis	DIAGNOSIS. The new species is similar to Hydrobaenus tumidistylus Saether, 1976 but differs from latter in having anal point long, wide at apex, rounded, without microtrichia; acrostichals 16, they situated at some distance from antepronotum; inferior volsella massive, complex shape; gonostylus with large median lobe, located medially.	en	Krasheninnikov, A. B., Vshivkova, K. A. (2022): A new species of the genus Hydrobaenus Fries, 1830 (Diptera: Chironomidae) from the Arctic Russia. Far Eastern Entomologist 454: 1-6, DOI: 10.25221/fee.454.1, URL: http://dx.doi.org/10.25221/fee.454.1
03E53E5EFFF5FFE035FF98C0C5F6FD71.taxon	description	DESCRIPTION. Adult male (n = 3). Total length 2.7 – 3.1 mm; length of abdomen 1.9 – 2.1 mm; wing length 1.7 – 1.8 mm. Ratio total length / wing length 1.60 – 1.69. Head, thorax, abdomen and legs light brown. view; 2 – hypopygium, holotype, ventral view; 3 – anal point, paratype, dorsal view; 4 – transverse sternapodeme and virga, paratype; 5, – gonostylus, holotype; 6 – gonostylus, paratype. Head. Eye bare, with dorsomedial extension lacking ommatidia. Temporal setae including 2 – 3 inner and 4 outer verticals and 1 – 2 postorbitals. Antenna with partly reduced plume, AR 0.50 – 0.58. Clypeus with 6 – 12 setae. Lengths of palpomeres (in μm): 20 – 24; 39 – 43; 78 – 86; 59 – 74; 86 – 94. Thorax. Lateral antepronotals 6 – 9; dorsocentrals 6 – 8; acrostichals 16 (begin at some distance from antepronotum, weak, curved at right angles), prealars 3 – 4. Scu- tellum with 6 – 8 setae. Wing. R with 8 – 11, R 1 with 0 – 1, R 4 + 5 with 0 – 2 setae; other veins bare. Anal lobe slightly truncated. Costa extending to apex of R 4 + 5 on 16 – 24 μm. Squama with 11 – 12 setae. Legs. Fore tibia with 35 – 39 μm long spur; mid tibia with 16 – 24 μm and 16 – 20 μm long spurs; hind tibia with 47 – 55 μm and 16 – 19 μm long spurs. Hind tibial comb consists of 11 – 13 setae. Pseudospurs absent, pulvilli reduced, empodium present. Length (in μm) and proportions of legs as in Tables 1, 2. Hypopygium (Figs 1 – 6). Tergite IX with 14 – 25 setae, laterosternite IX with 4 – 8 setae. Anal point 51 – 63 µm long, wide at apex, rounded, without microtrichia. Virga 24 – 27 μm long consisting of 2 – 3 spines. Transverse sternapodeme 86 – 90 μm long, from straight to convex, phallapodeme 102 – 114 μm long. Gonocoxite 204 – 251 μm long. Superior volsella absent. Inferior volsella massive, complex shape. Gonostylus 98 – 106 μm long, with large median lobe; megaseta 16 μm long, well- developed. HR 2.08 – 2.37. Female, pupa and larva. Unknown.	en	Krasheninnikov, A. B., Vshivkova, K. A. (2022): A new species of the genus Hydrobaenus Fries, 1830 (Diptera: Chironomidae) from the Arctic Russia. Far Eastern Entomologist 454: 1-6, DOI: 10.25221/fee.454.1, URL: http://dx.doi.org/10.25221/fee.454.1
03E53E5EFFF5FFE035FF98C0C5F6FD71.taxon	distribution	DISTRIBUTION. The new species is known from its type-locality at the PayKhoy Range, Yugorsky Peninsula, Russia. Abbreviations. P 1 - P 3 – anterior, mid and hind legs; LR – length ta 1 / length ti 1; SV – length fe + ti / length ta 1; BV – length fe + ti + ta 1 / length ta 2 + ta 3 + ta 4 + ta 5; BR – length of setae on ta 1 / minimal wide of ta 1.	en	Krasheninnikov, A. B., Vshivkova, K. A. (2022): A new species of the genus Hydrobaenus Fries, 1830 (Diptera: Chironomidae) from the Arctic Russia. Far Eastern Entomologist 454: 1-6, DOI: 10.25221/fee.454.1, URL: http://dx.doi.org/10.25221/fee.454.1
03E53E5EFFF5FFE035FF98C0C5F6FD71.taxon	biology_ecology	ECOLOGY. All adult collections are confined to the neighborhood of lotic waters and carried out in the second half of July (Fig. 7). Together with the new species in the studied water bodies Trichotanypus christmasus Makarchenko, 1983 (Podonominae), Diamesa cinerella Meigen, 1835 (Diamesinae), Constempellina brevicosta (Edwards, 1937) (Chironominae), and 22 species of Orthocladiinae were collected, among which the most interesting are Hydrobaenus laticaudus Saether, 1976, H. pilipodex Saether, 1976, Krenosmittia halvorseni (Cranston et Saether, 1986), Parasmittia carinata Strenzke, 1950, and Rheocricotopus (Rheocricotopus) gavriloae Krasheninnikov, 2015.	en	Krasheninnikov, A. B., Vshivkova, K. A. (2022): A new species of the genus Hydrobaenus Fries, 1830 (Diptera: Chironomidae) from the Arctic Russia. Far Eastern Entomologist 454: 1-6, DOI: 10.25221/fee.454.1, URL: http://dx.doi.org/10.25221/fee.454.1
03E53E5EFFF5FFE035FF98C0C5F6FD71.taxon	etymology	ETYMOLOGY. The species is named in honor of the Russian biologist Alexey A. Byalynitsky-Birulya (1864 – 1937), who participated in the Russian polar expedition in 1900 – 1902 led by Eduard von Toll to study the New Siberian Islands and search for the legendary Sannikov Land.	en	Krasheninnikov, A. B., Vshivkova, K. A. (2022): A new species of the genus Hydrobaenus Fries, 1830 (Diptera: Chironomidae) from the Arctic Russia. Far Eastern Entomologist 454: 1-6, DOI: 10.25221/fee.454.1, URL: http://dx.doi.org/10.25221/fee.454.1
