摘要 : A new species of oribatid mite in the genus Hydrozetes (Oribatida, Hydrozetidae) is described from Ecuador. Hydrozetes behanpelletierae sp. nov. differs from Hydrozetes dimorphus dimorphus and Hydrozetes dimorphus virginalis by nu... 展开 A new species of oribatid mite in the genus Hydrozetes (Oribatida, Hydrozetidae) is described from Ecuador. Hydrozetes behanpelletierae sp. nov. differs from Hydrozetes dimorphus dimorphus and Hydrozetes dimorphus virginalis by number, different length, and thickness of notogastral setae; length of notogastral setae p(1); specific form of lamellar setae; and distinctly larger body size. An updated generic diagnosis and an identification key to species of Hydrozetes in the Neotropical region are presented. Furthermore, we provide data on distribution, diversity and habitat ecology of known species of Hydrozetes in the Neotropical region. Majority of Hydrozetes found in the Neotropics seem to be relatively rare and restricted to this region. Most species of Hydrozetes in the Neotropics are inhabitants of various aquatic plants, only few of them occur in wet mosses and humid soils covered with grasses. 收起