Esolus filum (Fairmaire, 1870)

Lamine, Smail, Lounaci, Abdelkader & Bennas, Nard, 2019, Biodiversity and chorology of aquatic beetles (Coleoptera: Elmidae and Hydraenidae) in Kabylia (central-north Algeria). New records and updates, Zootaxa 4700 (1), pp. 102-116 : 109-110

Esolus filum (Fairmaire, 1870)

Material examined. A4: 7-V-2013 (35 exs.), A5: 7-V-2013 (40 exs.), A6: 7-V-2013 (32 exs.).

Chorotype: Endemic Maghrebian.

E. filum has been recorded in Algeria from a female specimen labeled on Alger Bonnair ( Berthélemy 1979). Later Algerian records for this species come from the north of the country in Mouzaïa and the Djurdjura massifs, and from Chelia (Aurès) ( Berthélemy 1964; Olmi 1976; Lounaci-Daoudi 1996; Lounaci 2005; Arab 2004). In this study, E. filum was captured in only three stations close to each other at middle-reach streams, with intermittent flow, located at altitudes between 200 m and 380 m. Two of them are impacted by domestic water pollution and sand and gravel extraction.

In Morocco, its distribution is restricted to the Rif Mountains at altitudes between 590 m and 1450 m ( Bennas & Sáinz-Cantero 2007; Benamar 2015) and in Tunisia it is confined to highland areas of the northern part of the country ( Touaylia et al. 2010, 2011).