Calamoceras sp. nov. (Trichoptera: Calamoceratidae) from the Western Rif area, Morocco.

We describe a new species of the genus Calamoceras which currently has only two species: Calamoceras illiesi Malicky & Kumanski 1974 and Calamoceras marsupus Brauer 1865. We also discuss its ecology by analyzing some biophysical parameters. The larva and the adult of this new species, Calamoceras riffensis sp.

Another new species of the genus Eaton, 1881 (Ephemeroptera, Leptophlebiidae) from the Maghreb.

A new species belonging to the genus Eaton, 1881 is described at the nymphal stage from the Rif Mountains of Morocco. This species presents unique features, such as the chorionic arrangement of the egg and the ornamentation of the posterior margin of abdominal tergites. It is compared to all west European species and a table with discriminating characters is given.

A new species of the group (Ephemeroptera, Baetidae) from Morocco.

is the first representative of the group to be described from the Maghreb. It was collected from streams in the Rif region of northern Morocco. All species of the group are morphologically very similar, with slight differences in colour.

A new species of the genus Waltz & McCafferty, 1994 (Ephemeroptera, Baetidae) from the north of Morocco.

A new species of is described from northern of Morocco It can be separated from the other west Palearctic species by the gill number, the spination of the distal margin of tergites, the leg setation, and the paraproct shape and spination. This species is widespread in the study area but never abundant. It prefers small to medium streams with slow flow, and does not seem to be very sensitive to pollution and water logging activities.

Assessment of functional feeding groups (FFG) structure of aquatic insects in North- western Rif - Morocco.

The involvement of trait-based approaches is crucial for understanding spatial patterns, energy flow and matter transfer in running water systems, which requires consistent knowledge of the functional structures of aquatic communities, with the advantage of combining physical properties and behavioral mechanisms of food acquisition rather than the taxonomic group. The present study indicated how functional feeding groups may be used as a proxy for classical taxonomic evaluation, as well as the potential interest in incorporating them as indicators of anthropogenic stressors. The composition and abundance of the functional feeding groups of aquatic insects were examined from September 2021 to August 2022 along the Western Rif Region.

Two new species of Eaton, 1869 from North Africa (Ephemeroptera, Baetidae).

Based on recently collected larvae from Algeria and Morocco, the species delimitation within the genus Eaton, 1869 in that region is validated. Two new species are described and illustrated, one from north-eastern Algeria, and one from North Morocco, using an integrated approach with morphological and molecular evidence. A table summarising the morphological differences between the new species and (Müller, 1776) from Central Europe is provided.

A new species of the genus Latreille, 1833 (Ephemeroptera, Prosopistomatidae) from Morocco.

We describe a new species of collected in the High Atlas Mountains of Morocco. appears to be morphologically more similar to the European highly endangered (Müller, 1785) than to the other Maghrebian species, Bojkova & Soldán, 2015. A gene tree including the few available barcode sequences of Palearctic specimens is provided.

Phylotranscriptomics interrogation uncovers a complex evolutionary history for the planarian genus Dugesia (Platyhelminthes, Tricladida) in the Western Mediterranean.

The Mediterranean is one of the most biodiverse areas of the Paleartic region. Here, basing on large data sets of single copy orthologs obtained from transcriptomic data, we investigated the evolutionary history of the genus Dugesia in the Western Mediterranean area. The results corroborated that the complex paleogeological history of the region was an important driver of diversification for the genus, speciating as microplates and islands were forming.

Local environment rather than past climate determines community composition of mountain stream macroinvertebrates across Europe.

Community assembly is determined by a combination of historical events and contemporary processes that are difficult to disentangle, but eco-evolutionary mechanisms may be uncovered by the joint analysis of species and genetic diversity across multiple sites. Mountain streams across Europe harbour highly diverse macroinvertebrate communities whose composition and turnover (replacement of taxa) among sites and regions remain poorly known. We studied whole-community biodiversity within and among six mountain regions along a latitudinal transect from Morocco to Scandinavia at three levels of taxonomic hierarchy: genus, species and haplotypes.

Contribution to the knowledge of Moroccan and Maghrebin stoneflies (Plecoptera).

An overview of Moroccan stoneflies is presented as an annotated summary of published and unpublished records from 115 localities. These records have resulted in an updated species list reflecting taxonomic corrections and noteworthy range extensions for several species. A total of 28 species, belonging to 15 genera and seven families, is now known from Morocco with the greatest diversity found in the Rif Mountains (23 species) and the lowest in eastern Morocco with three species.