Maso is a genus of dwarf spiders that was first described by Eugène Louis Simon in 1884.
Species it contains seven species: Maso alticeps (Emerton, 1909) – USA Maso douro Bosmans & Cardoso, 2010 – Portugal Maso gallicus Simon, 1894 – Europe, Algeria to Azerbaijan Maso krakatauensis Bristowe, 1931 – Indonesia (Krakatau) Maso navajo Chamberlin, 1949 – USA Maso politus Banks, 1896 – USA Maso sundevalli (Westring, 1851) (type) – North America, Europe, Turkey, Caucasus, Russia (Europe to Far East), China, Mongolia, Japan
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