Cypridoidea gen. et sp. indet. 2

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 : 232

Cypridoidea gen. et sp. indet. 2

Figure 30 A–C.

Material examined: Two carapaces from QH1, two carapaces ( ECNU 20170418/HN3–34–35) stored.

Dimension: LV, n = 2, length 0.487 –0.738 mm; RV, n = 1, length 0.759 mm, height 0.446 mm.

Description: RV overlapping LV both anteriorly and posteriorly ( Fig. 30A ). Anterior margin more rounded than posterior ( Fig. 30B ). One large spine present on postero-ventral area of each valve ( Fig. 30C ). Spines on both valves symmetrical. Surface of anterior and posterior part of carapace slightly pitted ( Fig. 30A ).

Distribution: This species was found in Qionghai on Hainan Island.

Remarks: Only two empty carapaces were found of this species. The calcified inner lamella is narrow ( Fig. 30B ), suggesting that the specimens are probably juveniles.

Figures

FIGURE 30. A–C, Cypridoidea gen. et sp. indet. 2. A, ECNU20170418/HN3-34, dorsal view anterior to the right; B, ECNU20170418/HN3-35 internal view of RV; C, ECNU20170418/HN3-35, external view of LV; D, Microdarwinula zimmeri (Menzel, 1916). Female. ECNU20170411/HN40, internal view of RV. Scale bars: 100 μm.