Spiders in Algeria remain little studied because of the difficulties associated with their identification, and few researchers are interested in studying them.

Our work has focused on the inventory and identification of spider species in the Mellah Lake area of El Kala National Park in northeastern Algeria, and study of monthly dynamics of abundance and species richness.

In one sampling year, we have listed 164 individuals from 10 families, 15 genera and 17 species. The analysis of the specific richness shows a dominance of the Family Lycosidae with four species. The families Clubionidae, Gnaphosidae and Linyphiidae are represented by two species each. The least represented are the family Araneidae, Sicariidae, Philodromidae, Salticidae, Tetragnathidae and Theridiidae with one species for each.