甲螨亚目

见内文Cryptostigmataa甲螨亚目（Oribatida），又名隐气门亚目（Cryptostigmata）， 是蛛形纲蜱螨亚纲螨形总目恙螨目之下的四个亚目之一，以青苔或甲虫为食。亦有其他文献把本分类归为目级，学名不变。它们的大小从0.2至1.4毫米。甲螨的新陈代谢速率一般比较低，发展也慢，繁殖力也低。 Species are iteroparous with adults living a relatively long time; for example, estimates of development time from egg to adult vary from several months to two years in temperate forest soils. Oribatid mites have six active instars: prelarva, larva, 3 nymphal instars and the adult. All these stages after the prelarva feed on a wide variety of material including living and dead plant and fungal material, lichens and carrion; some are predatory, but none is parasitic and feeding habits may differ between immatures and adults of the same species.甲螨是多种绦虫纲物种的宿主，有助泥土内的有机物质分解，就好像蚯蚓那样，所以在农业经济上有其重要之处。旧属疥螨亚目（Sarcoptiformes）。根据2011年时的分类，本亚目现时下领五个下目、249个科、2399个属，16,197个物种，这还未计算化石种的两个科、20个属共108个物种。这五个下目分别如下： Oribatida is divided into the following taxa: 这五个下目分别如下：维基物种中有关甲螨亚目的数据