Anthalona vandammei Sinev, Tiang-nga, & Sanoamuang 2023

Anthalona vandammei Sinev, Tiang-nga, & Sanoamuang, 2023 Figs. 6F–J Maiphae, Pholpunthin & Dumont 2008: 34, Fig. 2b (Alona verrucosa); Sinev, Tiang-nga & Sanoamuang 2023: 68–74, Figs. 1–5. Material examined. Three parthenogenetic females from Bera Lake, Pahang (3.13704° N, 102.60639° E), 01.02.2018. This is the first record for Malaysia. Studied specimens have a body shape typical of the species (Fig. 6F), morphology of valves (Fig. 6G), head pores (Fig. 6H), labrum (Fig. 6I) and postabdomen (Fig. 6J). The species is very close in morphology to Anthalona spinifera but differs from this and all other East Asian species of the genus in long posterior setae on valves (Fig. 6G), with the last setae located at postero-ventral angle of valves, followed by 15 short setulae only. For detailed description see Sinev et al. (2023). Anthalona vandammei is a rare endemic of South-East Asia, previously known from Lake Kud-Thing in Bueng Kan Province, North-East Thailand, and in Thungtong swamp in Surat Thani Province, Southern Thailand (Sinev et al. 2023). The species is associated with macrophytes.