Freshwater ostracods (Crustacea) from Hainan Island, southern China, with description of a new species Author Ma, Shunxin Author Yu, Na text Zootaxa 2020 2020-04-24 4767 2 201 243 journal article 22584 10.11646/zootaxa.4767.2.1 67c03d05-6c1c-4f88-862d-b061d05e9bf9 1175-5334 3770727 urn:lsid:zoobank.org:pub:7C2AB767-FB07-4366-9519-C110AAB18559 Pseudostrandesia mamarilorum ( Victor & Fernando, 1981c ) Figures 10 A–B and 11. 1981c Strandesia mamarilorum n. sp. — Victor & Fernando: 490 –493, figs. 110–126. 2009 Pseudostrandesia mamarilorum — Savatenalinton & Martens: 19 . Material examined: Three females and two female valves from WN5, two females ( ECNU 20170417/HN35–36) dissected; 18 females from 11DZ17, one female ( ECNU 20171114/HN45) dissected. Dimensions: Female, LV, n = 2, length 1.069 –1.073 mm , height 0.625 mm ; RV, n = 2, length 1.041 –1.044 mm , height 0.602 mm . Description: Carapace sub-elliptical with four purple bands. Surface of carapace slightly reticulated ( Fig. 11A ). LV overlapping RV both anteriorly and posteriorly. In lateral view, anterior margin more rounded than posterior. Greatest height anterior of mid-length. LV with inner groove along margins except dorsal margin ( Fig. 11B ). Calcified inner lamella with inner list anteriorly. Two tooth-bristles on third endite of Mx slightly serrated. Basal segment of L6 with two d setae ( Fig. 10A ). UR attachment well-developed, with Triebel’s loop situated at middle of dorsal and ventral branches ( Fig. 10B ). Distribution: This species has been found in the Philippines , Malaysia and Indonesia ( Victor & Fernando 1981c ) and Thailand ( Savatenalinton & Martens 2010 ). This species was found in Wanning and Danzhou on Hainan Island. Remarks: This species is assigned to the genus Pseudostrandesia because of the absence of seta d on L5 and the mid-position of the Triebel’s loop on UR attachment ( Fig. 10B ).