The spider genus Olios Walckenaer, 1837 (Araneae: Sparassidae)—Part 1: species groups, diagnoses, identification keys, distribution maps and revision of the argelasius-, coenobitus- and auricomis-groups

The genus Olios Walckenaer, 1837 is revised, a generic diagnosis is given and an identification key to eight species groups is provided. Olios in its revised sense includes 87 species and is distributed in Africa, southern Europe and Asia. Three species groups are revised in this first part, an identification key to species for each group is provided, five new species are described and all included species are illustrated. The Olios argelasius-group includes O. argelasius Walckenaer, 1806, O. canariensis (Lucas, 1838), O. pictus (Simon, 1885), O. fasciculatus Simon, 1880 and O. kunzi spec. nov. (male, female; Namibia, Zambia, South Africa); it is distributed in the Mediterranean region, northern Africa including Canary Islands, in the Middle East, South Sudan, East Africa,…