Records and descriptions of caddisflies from Natma Taung National Park and adjacent localities in the Chin Hills of Myanmar (Insecta, Trichoptera) Author Mey, Wolfram Museum fuer Naturkunde, Leibniz Institute of Evolution and Biodiversity Research, Invalidenstr. 43, D - 10115 Berlin, Germany wolfram.mey@gmx.de Author Malicky, Hans Sonnengasse 13, A - 3293 Lunz am See, Austria text Deutsche Entomologische Zeitschrift 2021 2021-03-26 68 1 139 164 http://dx.doi.org/10.3897/dez.68.61819 journal article http://dx.doi.org/10.3897/dez.68.61819 1860-1324-1-139 28566A431E6649C4BF8EF422762C3328 E1E84741BB015E3F8CAA951132B9D9CD Hydromanicus seth Malicky, 1993 Figs 3K , 5G-J Material. 1 ♂ , 1.5 km west of Hakha , 2260 m a.s.l. , 24.v.2001 , leg. S. Naumann ; 1 ♂ , 9 miles west of Mindat , 1960 m a.s.l. , LF, 9.x.2002 , leg. W. Mey (pinned) , cleared abdomen in glycerine vial; 4 ♂ , 8 km west of Mindat , 1914 m a.s.l. , 30.vi.2008 , leg. S. Naumann ; 1 ♂ , 14 km west of Mindat , 1910 m a.s.l. , 10.xi.2015 , cleared abdomen in glycerine vial, leg. S. Naumann (pinned). Remarks. The species belongs to the H. truncatus group sensu Olah and Johanson 2008b . H. seth is characterised by the subapically-excised harpagones, the bulbous apex of the phalloteca and the endothecal processes, which are divided into a dorsal, sclerous and a ventral, membranous part. Congeneric species with similar, non-circular, endothecal processes are H. asor Malicky, 1993 and H. eleasar Malicky, 1993, both described from Myanmar too. The latter two differ from H. seth by the form of the second segment of the inferior appendages, which are variably excised subapically in H. seth (Fig. 5H ).