Parameletus minor Bengtsson 1909

• Main Author: Tiunova, Tatiana M.
• Format: Text
• Language: unknown
• Published: Zenodo 2008
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Ephemeroptera; Siphlonuridae; Parameletus; Parameletus minor; Sommaren; Ul’ya; Fennoscandia; Fennoscandian; Yakutia
• Online Access: https://dx.doi.org/10.5281/zenodo.6232549; https://zenodo.org/record/6232549

Parameletus minor (Bengtsson 1909) (Figs. 24–30) Remipalpus minor Bengtsson 1908: 242, nomen nudum. Potameis minor Bengtsson 1909: 15. Parameletus minor : Bengtsson: 1930: 15. Material examined. RUSSIA . Southern Yakutia : Ungra River Basin, Yuhktinka stream, mouth, light tributary of Yuhkta River, 28.VII – 1.VIII 2006, T. Tiunova, 1 male imago, 2 male and 1 female subimago. Khabarovskiy Kray : Priochot’e, Ul’ya River Basin, Khetana River, 7 km upper mouth, 13.VIII 1985, V Zherikhin, 1 male imago; same place, 23.VIII 1985, V Zherikhin, 1 male imago; Nikolaevskiy Region, Bolshaya Iski River, about 4 km upper mouth, 28.VI – 3.VII 2005, T Tiunova, 5 male imagines, 1 female imago (reared from larvae); Amur River Basin, Mutii River, near motor-car bridge, line Khabarovsk-Nikolaevsk-on-Amur Town, 30.VI 2005, T Tiunova, 9 male imago, 3 female imagines; same place, stream, right tributary of Mutii River, 30.VI 2005, T Tiunova, 1 male imago, 2 larvae; Tumnin River Basin, Stream Asecta, 100 m upper mouth, light tributary of Tumnin River, 29.VI 1997, T Tiunova, 1 male imago; Chor River Basin, stream near Srednechorskiy Village, 50 m upper mouth, right tributary Chor River, 13.VI 1995, T Tiunova, 4 male imagines. Male imago. Dimensions: length (mm): body 8.0– 10.6; fore wings 8.0– 10.1; cerci 11.3–16.7. Total color of living imago dark brown. Head : upper portion of eyes light gray. Thorax: medioscutum and submedioscutum brown; sublateroscutum and posterior scutal protuberance dark brown (Fig. 30); mesosternum from dark brown to black. Fore legs brown, middle and hind legs light brown. Length (mm) of foreleg segments: femora 1.8–2.2; tibiae 1.5 –2.0; tarsal segments 0.9 –1.0, 1.0– 1.3, 1.0– 1.3, 0.8 –1.0, 0.5–0.7. The relation of length to the maximal width makes for fore wing – 2.53, hind wing – 1.58. Abdomen: terga dark brown; terga 2–6 partial translucent with dark band on posterior margins; terga 7–9 opaque, tinged with whitish and with pair of elongated dark brown spots in middle part; lateral part in of posterior margins darkening. Sterna 2–6 brown, translucent; sterna 7–9 dark brown, opaque. Gonostyli pedestal, first and basal part second gonostylus segments and styliger dark brown; other gonostylus segments some lighter; posterior margin of styliger with a broad rectangular projection in middle part (Fig. 29). Penis dark brown, tinged darkish; external lobes at base thinner than at middle part, with apices pointed and curved inside; inner lobes wide and strong, with furcated top (Figs. 24–25). Ventral processes dark brown, short, pointed, reach ¼ of length of external lobes (Fig. 24– 25). Cerci brown. Distribution. Parameletus minor is Palaearctic species, distributed from Fennoscandia to Far East of Russia (Fig. 8) (Saaristo & Savolainen 1980; Silfverberg 1984; Söderström & Nilson 1986; Tiunova 2007). Larvae of this species are found in small rivers or streams with cool water only. : Published as part of Tiunova, Tatiana M., 2008, Two new species of Parameletus Bengtsson, 1908 (Ephemeroptera: Siphlonuridae), and notes on other species from the Far East of Russia, pp. 17-26 in Zootaxa 1725 on pages 23-25, DOI: 10.5281/zenodo.181200 : {"references": ["Bengtsson, S. (1909) Beitrage zur Kenntnis der palaarktischen Ephemeriden. Lunds Universitets Arsbok (N. F), 5, 1 - 19.", "Bengtsson, S. (1908) Berattelse ofver en resa i entomologiskt syfte till mellersta Sverige sommaren 1907. Kungliga Svenska Vetenskaps- Akademiens Arsbok, 6, 237 - 246.", "Bengtsson, S. (1930) Kritische Bemerkungen uber einige nordischen Ephemeropteren, nebst Beschreibung neuer Larven. Lunds Universitets Arsskrift, 26, 1 - 27.", "Saaristo, M. & Savolainen, E. (1980) Suomen paivankorennot - Finlands dagslandor (Ephemeroptera). Notulae Entomology, 60,181 - 186.", "Silfverberg, H. (1984) Ephemeroptera. In: Hulden, A check list of the Finnish insects, Small orders. Notulae Entomology, 64,1 - 29", "Soderstrom, O. & Nilsson, J. (1986) Redescription of Parameletus chelifer Bengtsson and P. m i n o r (Bengtsson), with keys to nymphal and adult stages of the Fennoscandian species of Siphlonuridae (Ephemeroptera). Entomologica Scandinavica, 17, 107 - 117.", "Tiunova, T. M. (2007) Current knowledge of the mayfly fauna (Ephemeroptera) in the Far East of Russia and adjacent territories. Euroasian Entomological Journal, l. 6, 181 - 194 + III (in Russian)."]}