Stenocypris malayica Victor & Fernando, 1981b

Ma, Shunxin & Yu, Na, 2020, Freshwater ostracods (Crustacea) from Hainan Island, southern China, with description of a new species, Zootaxa 4767 (2), pp. 201-243 : 227-228

Stenocypris malayica Victor & Fernando, 1981b

Figures 22 and 23 .

1981b Stenocypris malayica n. sp. — Victor & Fernando: 157 –158; figs. 34–45.

Material examined: Five females from WN6, one female ( ECNU 20170417/HN17) dissected.

Dimensions: Female, RV, n = 1, length 1.395 mm; LV, n = 1, length 1.404 mm.

Description: In lateral view, carapace elongated. Anterior end wider than posterior. Dorsal margin slightly arched. Greatest height situated at mid-length. Calcified inner lamella anteriorly wide ( Fig. 22B ). Septa present along free margins, longest in antero-dorsal and antero-ventral areas ( Fig. 22B ). Natatory setae of A2 long, slightly exceeding tips of terminal claws ( Fig. 23A ). L6 with enlarged h3 seta ( Fig. 23B ). Three large denticles present on distal end of stem of right UR, with additional smaller denticles, reducing in size towards proximal end ( Fig. 23C ).

Distribution: This species has been found in Indonesia ( Victor & Fernando 1981b), Japan ( Smith et al. 2011), Oceania ( Meisch et al. 2007) and Thailand ( Savatenalinton & Martens 2009). This species was found in Wanning on Hainan Island.

Remarks: This species can be easily distinguished from other species in the genus by the claw-like h3 seta on the L6 ( Fig. 23B ). The natatory setae of A2 slightly exceed the tips of the terminal claws in the Hainan specimens, but were reported to be slightly shorter by Victor & Fernando (1981b).

Figures

FIGURE 22. Stenocypris malayica Victor & Fernando, 1981b. Female. ECNU20170417/HN17. A, external view of RV; B, external view of LV. Scale bars: 100 μm.

FIGURE 23. Stenocypris malayica Victor & Fernando, 1981b. Female. ECNU20170417/HN17. A, A2; B, part of L6; C, right UR. Scale bars: 100 μm.