Description of Mesophylax isly sp. nov. (Trichoptera, Limnephilidae) from Morocco, and new genus records from the Balkans.

The male and female genitalia of Mesophylax isly Ibrahimi, Taybi & Mabrouki sp. nov. (Limnephilidae) are described based on material collected from the Isly River in Morocco.

Taxonomic notes and key to the West Palearctic () Osten Sacken, 1860 (Diptera, Limoniidae) with description of a new species from Morocco.

Background: The Mediterranean Region of the West Palearctic is one of the most species-rich biomes in the world, hosting a high level of endemism and relict species with important conservation value. The North Africa Atlas Mountains (spanning Morocco, Algeria and Tunisia) belong to a poorly-investigated region of the Mediterranean area, with overlooked aquatic biodiversity; hence, a number of species still remain to be discovered.

New Information: The subgenus Antocha (Antocha) Osten Sacken, 1860 is recorded for the first time from Africa, with a description of A.

New data on the distribution of aquatic bugs (Hemiptera) from eastern Morocco with notes on chorology.

New faunistic and distributional data on aquatic Hemiptera from the Oriental Region of Morocco and the Moulouya River basin, covering an area of 119,268 km2, are presented. An annotated list of 45 species, 21 genera and 11 families is provided. Nine species are new records for the entire studied area, and two for the Moulouya River basin.