Larval Taxonomy and Distribution of Genus Hydropsyche (Trichoptera: Hydropsychidae) in Northwestern Algeria Author Bemmoussat-Dekkak, Soumya 0000-0002-8723-5501 Laboratoire de Valorisation des Actions de l’Homme pour la Protection de l’Environnement et Applications en Santé publique, Université de Tlemcen, BP 119 13000 Tlemcen, Algérie. & dekkaksoumia @ hotmail. fr; https: // orcid. org / 0000 - 0002 - 8723 - 5501 dekkaksoumia@hotmail.fr Author Abdellaoui-Hassaine, Karima 0000-0002-7568-8132 Laboratoire de Valorisation des Actions de l’Homme pour la Protection de l’Environnement et Applications en Santé publique, Université de Tlemcen, BP 119 13000 Tlemcen, Algérie. & hassaine 69 @ hotmail. com; https: // orcid. org / 0000 - 0002 - 7568 - 8132 hassaine69@hotmail.com Author Sartori, Michel 0000-0003-3397-3397 Musée cantonal de zoologie, Palais de Rumine, Place Riponne 6, 1005 Lausanne, Suisse & Département d’Ecologie et d’Evolution, Université de Lausanne, Biophore, 1015 Lausanne, Suisse & michel. sartori @ vd. ch; https: // orcid. org / 0000 - 0003 - 3397 - 3397 michel.sartori@vd.ch Author Morse, John C. 0000-0003-3187-4045 Department of Plant & Environmental Sciences, Clemson University, Clemson, South Carolina, USA & jmorse @ clemson. edu; https: // orcid. org / 0000 - 0003 - 3187 - 4045 jmorse@clemson.edu Author Zamora-Muñoz, Carmen Departamento de Zoología, Facultad de Ciencias, Universidad de Granada, 18071 - Granada (Spain) text Zootaxa 2021 2021-01-25 4915 4 481 505 journal article 8676 10.11646/zootaxa.4915.4.2 70890c1c-cbf0-4135-9bf3-5e22b64e3cd3 1175-5326 4461519 84122919-0AE3-43BB-AECB-6F3CA0D63629 Hydropsyche fezana Navás 1932 ( Fig. 5 ) Material examined: Chouly Wadi at Beni Ghazli ( CH 0): 2 larvae ( UTA , UGS ), 22.ii.2015 . Description: Body brown ( Fig. 5A ). Frontoclypeus having dark oral spot with two lateral light spots and indistinct blurred aboral spot ( Fig. 5B ; Table 2 ); lateral lobes of submentum short and wide ( Fig. 5C ) and prosternites moderately pigmented ( Fig. 5D ). Distribution and ecology: This West Palearctic species has been reported from Algeria (Grant Kabylia) ( Sekhi et al. 2016 ), Italy ( Calabria ) ( Valle & Ludovici 2018 ), and Morocco ( Badri 1985 ; Mohati 1985 ; Dakki 1986 ; Ouahsine 1993 ; Tayoub 1989 ; El Alami & Dakki 1998 ; Bonada et al . 2008 ; Hajji et al. 2013 ). It is considered to be a rheophilic species, generally inhabiting permanent, medium and large streams with moderate flow, flowing on a heterogeneous bottom made of silt, sand, and pebbles ( Hajji 2017 ). It is the most common and most abundant Trichoptera species in the Moroccan Rif ( Hajji 2017 ), and it is widely distributed and abundant in springs of streams, torrents and rivers of the Great Kabylia ( Sekhi et al . 2016 ). Only two individuals were collected from a single site located at 1065 m a.s.l in the springs of the streams where it co-occurs with H. siltalai . However, it does not have the same rheophilic habitat as its congener.