| abstract | A list of identified oribatid ptyctimous mites from Lesser Antilles and Bahamas, including 18 species, six generaband three families, is provided. Of these, three species are new records for the Caribbean, and three species are new to science. Oribotritia grossa Niedbala sp. nov. differs from other neotropical Oribotritia by the presence of relatively short, thick, distally blunt sensilli. Arphthiracarus alienus Niedbala sp. nov. differs from other Arphthiracarus species by the presence of uniquely shaped sensilli, short spiniform setae, the median sigillar field long and narrow with an incision between the rostral setae, four pairs of notogastral lyrifissures and the location of vestigial setae f1 anterior to h1. Arphthiracarus strictus Niedbala sp. nov. differs from A. brasiliensis Niedbala, 1988, A. iubatus Niedbala, 2003, A. latebrosus (Niedbala, 1982) and A. pervalidus Niedbala, 2003 by the presence of a unique tight location of genital setae g4-6 and bifurcated setae d of femora I. In addition, descriptions of three tritonymphs are presented. |