A review of Boreoheptagyia Brundin, 1966 (Chironomidae: Diamesinae) from East Asia and bordering territories, with the description of five new species Author Makarchenko, Eugenyi A. Institute of Biology and Soil Sciences, Russian Academy of Sciences, Far East Branch, 100 let Vladivostoku Avenue, Vladivostok 690022 Russia. E-mail: makarchenko @ biosoil. ru Koporasu-Tamura-C, Minami-machi Higashi- 5 - 1 - 14, Obihiro, Hokkaido 080 - 0855, Japan. E-mail: endito @ snow. plala. or. jp Life Science College of Nankai University, Tianjin, 300071 China. E-mail: xhwang @ nankai. edu. cn Corresponding author Author Endo, Kazuo Author Wu, Jingyang Author Wang, Xinhua text Zootaxa 2008 2008-07-07 1817 1 1 17 https://biotaxa.org/Zootaxa/article/view/zootaxa.1817.1.1 journal article 10.11646/zootaxa.1817.1.1 1175­5334 5125134 Boreoheptagyia tibetica Makarchenko, Wang et Willassen ( Figs 34–36 ) Boreoheptagyia tibetica Makarchenko, Wang et Willassen, 1996: 825 . Diagnostic characters. The species was described in detail by Makarchenko et al. (1996) . The male is characterized by: total length 1.5 mm ; wing length 0.33–0.40 mm . Coloration: general color dark brown, legs yellowish, with light brown or brown rings, wing gray. Antenna with 6 flagellomeres, without plume ( Fig. 34 ), AR 0.44. Acrostichals 14, 22– 26 µm long; dorsocentrals 6, in single anterior group; prealars 15–16; preepisternals absent. Wing reduced, R and R 1 with 16–18 setae, R 4+5 with 56 setae. Alula with 0–8 setae. Squama with 6 short setae. Anal lobe slightly reduced. LR 1 0.66, SV 1 2.95, BV 1 3.51. Hypopygium as in Figures 35– 36 . Aedeagal lobe sclerotized. Gonocoxite simple, broad. Gonostylus curved, widest in basal half, with one short megaseta. Remarks. The male of B. tibetica can be separated from all other Boreoheptagyia species with femalelike antenna by the features mentioned in the key. Distribution. The species is known only from a high mountain area ( 1.700 m a.s.l.) in Tibet Province , China .