The presentwork provides an exhaustive inventory (as possible) and contributes to the study of the biodiversity of the population of riparianbeetles in four zones of the region of Guelmim Oued Noun: Assa zag, Guelmim, TanTan and Sidi Ifni, in each area, using , pitfall traps, beating and sighthuntingwere able to identif y 316 individuals; 84 speciesidentified, belonging to 11 Families (Cicindelidae, Carabidae, Cetoniidae, Staphylinidae, Dynastidae, Malachiidae, Scarabaeoidea, Buprestidae, Coccinellidae, Tenebrionidae, Anthicidae). The familyTenebrionidaedemonstrated a con sistent trend within the majority of the beetle population. The mostwidespreadfamily and the best adapted to climatic conditions. Throughhierarchical classification, it was revealed that there werefaunalsimilaritiesbetween the different sites, leading to t he identification of five main groups. Additionally, itwasnotedthat the prevailingclimatic conditions in the study area played an important role in the formation of beetle assemblages, affectingboththeirabundance and speciesdiversity. A comprehensive under standing of these factorsis crucial for the development of effective conservation strategiesaimed at ensuring the survival of thesebeetles. However, furtherresearchisneeded to explore other potential factors that may influence beetlebiodiversity.