Caddisflies from Myanmar: New records and descriptions of new species (Insecta, Trichoptera) Author Mey, Wolfram Museum für Naturkunde, Leibniz Institute of Evolution and Biodiversity Research, Invalidenstr. 43, 10115 Berlin, Germany Sonnengasse 13, Lunz am See, Austria. tatarin. kyselak @ gmail. com; https: // orcid. org / 0000 - 0003 - 1305 - 8378 Author Malicky, Hans 0000-0003-1305-8378 tatarin.kyselak@gmail.com text Zootaxa 2021 2021-11-02 5060 4 533 565 journal article 3686 10.11646/zootaxa.5060.4.4 2224cc31-78f3-4db3-9a52-2ce9fd357571 1175-5326 5637984 E04FD7B0-17B9-4812-8766-3674FCC3C4B6 Limnocentropus rossicorum spec. nov. ( Figs 4A–4C , 16 ) LSID urn:lsid:zoobank.org:act: D803418D-DFEA-4E55-8116-6023F42726D7 Holotype ♂ and paratype ♂ (pinned), Myanmar , Kachin , Putao , 550 m , 1– 5.5.1998 , 27°21’N 97°40’E , at light, leg. S. Murzin & V . Siniaev , genitalia in glycerine vial ( MfN ). Etymology. The species epithet is a plural genitive noun derived from the Latin singular nominative noun rossicus , “Russian,” and meaning “of the Russians,” referring to the Russian collectors of this species. Diagnosis. L. rossicorum spec. nov. resembles L. hysbald Malicky & Chantaramongkol 1991 and L. apollon Malicky 1999 from Laos and Thailand . The diagnostic features of the new species are the apically split lateral parts of segment X and the nearly straight anterior margin of segment IX. Description. Length of forewings 12–13 mm . Head light brown, occipital warts and frons with gold-brown hairs, eyes hairy, ocelli white; antennae with brown scapes and black flagellomeres, white hairs at articulations. Maxillary palpi each five-segmented, dark brown, broad and flattened. Labial palpi each three-segmented, brown. Thorax black, setal warts with gold-brown hairs. Tibiae and tarsi of all legs black, tarsi with ventral spines, praetarsus without spines; spurs 2.4.4. Forewings densely covered with shining, brown hairs, discoidal cell long; hind wings brown ( Fig. 16 ). Abdomen black. Male genitalia ( Figs 4A–4C ). Anterior margins of segment IX in lateral view slightly convex, nearly straight, posterior margins each with pointed lateral lobe. Inferior appendages one-segmented, sickle-shaped in ventral view, finger-like, tips pointed, dorsal margins bearing long bristles. Segment X elongate, indistinctly separated from segment IX by weak suture, distal portions of lateral parts deeply split, resulting in four processes, with upper pair somewhat enlarged apically and diverging in dorsal view, lower pair widely separated from upper pair. Preanal appendages absent, replaced at this lateral position by small denticules. Phallic apparatus tubular, endotheca with two curved sclerites.