Abstract
The Indian Ocean includes several Islands and Archipelagos and a survey of the fauna of Phytoseiidae was realized recently in these poorly known territories, despite La Réunion Island is located in an area being a hotspot of biodiversity. The Phytoseiidae fauna of La Réunion Island has been poorly investigated so far with only 33-recorded species including 24 Amblyseiinae, 5 Phytoseiinae and 4 Typhlodrominae, among which 8 species that had been described as new. All data concerning La Réunion have been published in nine papers until now. New results of surveys done recently (2015-2018) are presented in this tenth paper and add 19 newly recorded species among which 3 are new to Science and 21 already known species but with additional data. Among these 19 species, at least nine are already well known as biological control agents (BCA). Demonstration of the natural occurrence of already known efficient BCA in these territories is consequently of great agricultural and commercial interests, in addition of the contribution to fundamental knowledge of biodiversity of these poorly known territories.