Assemblages of Trichoptera larvae on water moss in the middle reaches of the Yenisei River (Siberia, Russia) Author Konovalova, Daria A. 0000-0003-2777-6098 Institute of Biophysics, Federal Research Center “ Krasnoyarsk Science Center ” of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia, & dariakon @ inbox. ru; https: // orcid. org / 0000 - 0003 - 2777 - 6098 dariakon@inbox.ru Author Kislitsina, Nadezhda I. 0000-0002-1383-2434 Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russia, & nadezhda. kislitsina 2016 @ yandex. ru; https: // orcid. org / 0000 - 0002 - 1383 - 2434 & Krasnoyarsk Branch of the Federal State Budget Scientific Institution “ Russian Federal Research Institute of Fisheries and Oceanography ”, Krasnoyarsk, Russia nadezhda.kislitsina2016@yandex.ru Author Zotina, Tatiana A. 0000-0002-4792-1582 Institute of Biophysics, Federal Research Center “ Krasnoyarsk Science Center ” of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia, & Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russia, & t _ zotina @ ibp. ru; https: // orcid. org / 0000 - 0002 - 4792 - 1582 t_zotina@ibp.ru text Zootaxa 2023 2023-06-21 5306 3 331 348 http://dx.doi.org/10.11646/zootaxa.5306.3.2 journal article 56376 10.11646/zootaxa.5306.3.2 ea7e2bc0-af8a-4746-b09d-34916ca1850d 1175-5326 8062982 264C8FCC-CB13-463A-BBAD-A75422C77EEC Hydatophylax nigrovittatus McLachlan 1872 . The legs are mottled with sharp black distal bands on tibiae and tarsi; the bands on trochanters and femora are less distinct but similarly dark ( Fig. 5A ). The spots on the head are distinct and large ( Fig. 5A ). All gills consist of single filaments ( Fig. 5B ). The pronotal sclerite has a contrasting pattern, with a rather wide light-colored medial band, which continues as a similarly light whitish middle part of the mesonotal sclerite ( Figs 5A, 5C ). The metanotum bears two fused anteromedial sclerites ( Fig. 5C ). The cases are slightly conic straight tubes constructed from detritus and fine dark material resembling clay or mud. One or two long plant detrital sticks similar in size to or longer than the case are mounted at the dorsal sides of the case. The length of the tube is up to 2.5 cm (without the stick) ( Fig. 5D ). This species is minor in number but regularly found in the Trichoptera assemblages on water moss.