Ochthebius (Ochthebius) difficilis Mulsant, 1844 Material examined. Rif and Pré-Rif: Chefchaouen. 1 m, S197, 26. V.2009. Tétouan. 1 m, 1 f, S133, 28 -VIII-2001. Taza (first record). 2 exs., S348, 30.III.1997. Oriental Plateau: Jerada (first record). 1 m, 1 f, S112, 23.III.2008. 4 m, 9 f, S214, 19.III.2008. Berkane (first record). 9 exs., S351, 15.VII.1997. High Atlas: Marrakech. 1 m, S298, 02. VI.2005. Errachidia (first record). 7 exs., S352, 16.VII.1997. Ouarzazate. 1 ex., S341, 19.VII.1997. Anti Atlas: Agadir Ida-Outanane (first record). 3 exs., S323, 20.VII.1997. 3 exs., S346, 21.IV.2001. 7 exs., S385, 23.VII.1997. Taroudant. 2 exs., S367, 03.I.1985. Chorotype. Mediterranean. Distribution in North Africa. Algeria, Morocco and Tunisia (Jäch & Skale 2015). Moroccan distribution. Rif and Pré-Rif: Tétouan, Chefchaouen, Al Hoceima and Nador (Bennas et al. 2001). Oriental Plateau: Figuig (Chavanon et al. 2004; Mabrouki et al. 2018). Middle Atlas: Béni-Mellal (Jäch 1992b). High Atlas: Ouarzazate and Marrakech (Jäch 1992b). Anti Atlas: Taroudant (Jäch 1992b).

Published as part of Benamar, Loubna, Bennas, Nard, Hassoun, Mustapha & Millán, Andrés, 2022, Checklist of Moroccan aquatic beetles (Coleoptera: Hydraenidae Mulsant, 1844) New records and updates, pp. 451-504 in Zootaxa 5129 (4) on page 464, DOI: 10.11646/zootaxa.5129.4.1, http://zenodo.org/record/6503966