Key to the males of indian species of genus Hydromanicus 1. Preanal appendages each with two lobes: one filiform lobe and one very slender foliose lobe (Malicky 2000: 34; Oláh & Johnson 2008: 47, 49, figs 67, 68, 71, 72)..................................................................... 2 - Preanal appendages each with only single broad filiform lobe (Figs 6, 7; Pandher et al. 2020: 345, 347, figs 1, 2, 6, 7)..... 6 2. Apical segment of each inferior appendage pointed apically in ventral view and spatula-like; phallus with two curved processes at apex in lateral view (Oláh & Johnson 2008: 47, figs 69, 70)................................................. 3 - Apical segment of each inferior appendage short, broad and rounded in ventral view and phallus without curved processes at apex in lateral view (Malicky 2000: 34)............................................. Hydm. erato Malicky 2000 3. Foliose branch of each preanal appendage only 1/4 as long as filiform branch (Oláh & Johnson 2008: 47, figs 67, 68)............................................................................ Hydm. palnis Oláh & Johanson 2008 - Foliose branch of preanal appendage more than 1/4 as long as filiform branch (Oláh & Johnson 2008: 45, 49, figs 63, 64, 71, 72)................................................................................................ 4 4. Foliose branch of each preanal appendage 1/3 as long as filiform branch; filiform branch with subapicolateral hump in dorsal view (Oláh & Johnson 2008: 45, figs 63, 64)................................ Hydm. naraik Oláh & Johanson 2008 - Foliose branch of each preanal appendage more than 1/3 as long as filiform branch; filiform branch without subapicolateral hump in dorsal view (Oláh & Johnson 2008: 49, figs 71, 72)................................................... 5 5. Segment X broad and weakly curved ventrad; apical segment of each inferior appendage broad, apex slightly excised in ventral view (Oláh & Johnson 2008: 49, figs 71, 73)................................. Hydm. topali Oláh & Johanson 2008 - Segment X narrow and strongly curved ventrad; apical segment of each inferior appendage pointed apically in ventral view (Martynov 1935: 180, fig. 82b).............................................. Hydm. spatulatus (Martynov 1935) 6. Preanal appendages very small lobes (Figs 1, 2)............................................................. 7 - Preanal appendages very long and foliaceous (Fig. 6; Pandher et al. 2020: 345, 347, figs 1, 6)........................ 8 7. Apicolateral setose lobes broad and large in dorsal view (Oláh & Johnson 2008: 20, figs 9, 10........................................................................................... Hydm. krsamgin Oláh & Johanson 2008 - Apicolateral setose lobes digitate and pointed in dorsal view (Fig. 2)......................... Hydm. religiosus sp. nov. 8. Preanal appendages more than half as long as tergum X in dorsal view (Pandher et al. 2020: 345, 347, figs 2, 7).......... 9 - Preanal appendages less than half as long as tergum X in dorsal view (Fig. 7)................ Hydm. sikkimensis sp. nov. 9. Tergum X with lateral rounded protuberances near base in dorsal view; inferior appendages pointed apically in ventral view (Pandher et al. 2020: 347, figs 7,8)............................................ Hydm. betteni Pandher et al. 2020 - Tergum X with lateral rounded protuberances near apex in dorsal view; inferior appendages apically quadrate or blunt in ventral view (Pandher et al. 2020: 345, 348, figs 2, 12)............................................................ 10 10. Apicolateral setose lobes capitate (Pandher et al 2020: 348, fig. 12)................ Hydm. clavatus Pandher et al. 2020. - Apicolateral setose lobes digitiform and quadrate apically (Pandher et al. 2020: 345, fig. 2)......................... 11 11. Tergum X with apex curved dorsad in lateral view; lateral rounded protuberances less prominent in dorsal view (Pandher et al. 2020: 345, figs 1, 2)...................................................... Hydm. digitatus Pandher et al. 2020 - Tergum X with apex curved ventrad in lateral view; lateral rounded protuberances more prominent in dorsal view (Malicky 2010: 197)......................................................................................... 12 12. Segment IX quadrate; preanal appendages foliose; apical segment of each inferior appendage apically quadrate in ventral view........................................................................ Hydm. luctuosus Ulmer 1905 - Segment IX not quadrate; preanal appendages broad to 2/3 length and apical 1/3 narrow; apical segment of each inferior appendage not quadrate........................................ Hydm. inferior Chantaramongkol & Malicky 1995

Published as part of Pandher, Manpreet Singh, Kaur, Simarjit & Garima, Deepti, 2021, New species and new records of Hydropsychinae (Insecta: Trichoptera: Hydropsychidae) from India, pp. 364-376 in Zootaxa 4915 (3) on pages 369-371, DOI: 10.11646/zootaxa.4915.3.5, http://zenodo.org/record/4456544