Representatives of the mesostigmatid mite subfamily Arctoseiinae (Acari: Mesostigmata: Gamasina: Ascidae) held in the Museum für Naturkunde Berlin are documented. This material stems from the extensive Wolfgang Karg collection and originates primarily from (eastern) Germany, as well as Sweden, Chile and New Caledonia in the Pacific. Here, we record seventeen Arctoseiine species in Berlin, including type material of the following seven species: Arctoseius brevichelis Karg, 1969, A. dendrophilus Karg, 1969, A. pristinus Karg, 1962, A. resinae Karg, 1969, A. sessiluncus Karg, 1965, Zerconopsis apodius Karg, 1969 and Iphidozercon validus Karg, 1996.

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