New records of water mites of the family Arrenuridae from the Oriental region, with the description of one new species (Acari: Hydrachnidia) Author Smit, Harry 0000-0002-0376-6808 Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, the Netherlands. E-mail: harry. smit @ naturalis. nl, https: // orcid. org / 0000 - 0002 - 0376 - 6808 Author Pešić, Vladimir Department of Biology, University of Montenegro, Cetinjski put b. b., 81000 Podgorica, Montenegro. E-mail: vladopesic @ gmail. com, https: // orcid. org / 0000 - 0002 - 9724 - 345 X text Ecologica Montenegrina 2023 2023-09-19 66 1 10 http://dx.doi.org/10.37828/em.2023.66.1 journal article 10.37828/em.2023.66.1 2336-9744 13245987 urn:lsid:zoobank.org:pub:0C28A4B7-0582-4163-9B5C-531D69092710 Arrenurus ansatus Walter, 1929 Material examined — Thailand . 0/2/0, Nong Bua pond, Phu Rua , Loei Province , 17°26.645 N 101°21.213 E , 618 m a.s.l. , 30 Oct. 2017 ; 0/1/0, pond along road 12, E of Nong Ruea , Khon Kaen Province , 16°29.230 N 102°28.301 E , 195 m a.s.l. , 6 Nov. 2017 ; 1/2/0, small lake Huai Na Muang , E of Khemarat , Amnat Charoen Province , 16°02.149 N 105°15.860 E , 130 m a.s.l. , 8 Nov. 2017 ; 0/1/0, Ban Pra Reservoir , Chon Buri Province , 13°12.173 N 100°59.366 E , 33 m a.s.l. , 18 Nov. 2017 . Distribution — Widespread in SE-Asia: Java , Indonesia ( Walter 1929 , Viets 1935 ), Singapore (K.O. Viets 1959 ), Thailand ( Imamura 1964 ).