New Records of Hyporheic Water Mites from Australia, with a Description of Two New Genera and Ten New Species (Acari: Hydrachnidia).

Abstract. Twenty-four species, representing 10 families, of hyporheic water mites were collected
from Queensland and New South Wales, Australia. Two new genera, Davidsia n.gen. (Aturidae) and Janszoonia n.gen. (Athienemanniidae), and ten new species, Anisitsiellides fuscatus n.sp. (Anisitsiellidae), Australiobates hyporheicus n.sp. (Hygrobatidae), Koenikea saponaria n.sp. (Unionicolidae), Austraturus crystalensis n.sp., Barwontius setipes n.sp., Davidsia aurita n.sp. (Aturidae), Hesperomomonia similis n.sp., Partidomomonia tertia n.sp. (Momoniidae), Janszoonia difficilis n.sp. (Athienemanniidae) and Arrenurus bunyaensis n.sp. (Arrenuridae) are described. A list is given of all known hyporheic species of Australia. Finally, some considerations are given about the occurrence of hyporheic water mites in Australia.