Limnocythere stationis Vávra, 1891

Savatenalinton, Sukonthip, 2014, Ostracods (Crustacea: Ostracoda) from the floodplain of the Chi River, Mahasarakham Province, Northeast Thailand, with the first record of male Tanycypris siamensis Savatenalinton & Martens, 2009, Zootaxa 3838 (2), pp. 195-206 : 204

Limnocythere stationis Vávra, 1891

( Fig. 5 B)

The occurrence of L. stationis in Thailand is of particular interest, since the genus Limnocythere was thus far reported from several parts of the world, namely Afrotropic, Australian, Nearctic, Neotropic, Palaearctic and Pacific region and oceanic islands, but thus far not from the Oriental region (see Martens & Savatenalinton 2011). Hence, L. stationis found in this study is the first record of the genus in the Oriental region. This species is so far recorded from several European countries (see Meisch 2000), Turkey ( Altınsaçlı 2001), Japan ( Smith & Janz 2009) and Thailand (present study). As it occurs only in a branch of the Chi River (number 16 in Fig 1 ) with 5 female specimens, it is a rare species in the investigated area. Limnocythere stationis is a thermophilic species ( Meisch 2000). In the Thai locality, it occurred at a water temperature of 30.4 °C, a DO of 3.99 mg /L and a pH of 6.8.

Figures

FIGURE 1. Sampled localities in floodplain of the Chi River, Mahasarakham Province, Thailand.

FIGURE 5. Scanning electron micrographs of ostracods found in the studied floodplain. A. Ilyocypris monstrifica (Norman, 1862), dorsal view of carapace. B. Limnocythere stationis (Vávra, 1891), dorsal view of carapace. C. Hemicypris ovata Sars, 1903, left lateral view of carapace. D. Physocypria crenulata (Sars, 1903), right lateral view of carapace. E. Bradleystrandesia weberi (Moniez, 1892), right lateral view of carapace. F. Pseudocypretta maculata Klie, 1932, right lateral view of carapace. Scale bars: 100 Μm for A – D, F and 200 Μm for E. Arrows point toward the anterior end.