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 Apatania crymophila McLachlan 1880 . The mesonotum shows distinct, large, diamond-shaped posterolateral spots ( Fig. 9A ). The surface of the protonum is covered by short thick secondary setae ( Fig. 9B ). The pairs of postocular primary setae on the head are shorter than the frontal setae; the posterior part of the head is light-colored ( Fig. 9B ). The length of the gula is greater than its width by a factor of more than 1.5 ( Fig. 9C ). The cases have a shape of slightly curly conic tubes ( Fig. 9D ) made of small mineral particles; ballast particles of larger size are often mounted laterally ( Fig. 9E ). The length of the cases does not exceed 1.5 cm ( Figs 9D, 9E ). The longest cases are typical of the latest larval instars, when cases are attached to rocks on the bottom; the size of the cases of younger, mobile larval instars does not exceed 1 cm . This species was the most numerous in the assemblages of Trichoptera on water moss.