On Chrissia muangkanensis, new species (Crustacea, Ostracoda) from Thailand, with notes on taxonomic characters of the genus Author Savatenalinton, Sukonthip text Raffles Bulletin of Zoology 2023 2023-08-03 71 443 456 journal article 10.26107/RBZ-2023-0033 2345-7600 8222334 3ED84353-0756-47B5-885E-0FEF35F2594F Genus Chrissia Hartmann, 1957 Diagnosis (modified from Martens, 2001 ). Cp medium to large (length c. 1.5 – 3.5 mm ), elongated or reniform shaped and laterally compressed; RV and LV without selvages; anterior calcified inner lamella well-developed, with or without inner list, inner list (if present) situated very close to valve margin; marginal septa absent; fused zone wide, pore canals straight along anterior and posterior margins, branched along ventral margin, false pore canals present, especially ventrally; Rome organ on A1 small, not segmented; natatory setae on A2 of medium length (reaching not beyond tip of end claws); terminal segment of Mx1 palp rectangular and elongated (length c. 2-3 times of width); setae d1 and d2 on T2 short, subequal; CR asymmetrical, Sp seta absent, spines on ventral margin of right ramus larger than on left ramus, sometimes very long and stout; hemipenis without hook-like process on medial shield, up to two additional internal coils of spermiduct.