Cypridoidea gen. et sp. indet

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. 1

Figure 29 .

Material examined: One valve from JN24, one valve ( ECNU 20170412/HN1–22) stored.

Dimension: RV, n = 1, length 0.695 mm, height 0.402 mm.

Description: Surface of carapace reticulated in anterior, posterior and ventral areas. Greatest height anterior of mid-length. Anterior margin more rounded than posterior. Two large tubercles present on central-ventral part of carapace. Anterior tubercle smaller than posterior one ( Fig. 29A ). Selvage present along antero-ventral and posteroventral margins ( Fig. 29B ).

Distribution: This species was found in Jianfengling National Forest Park on Hainan Island.

Remarks: Based on the muscle scars on RV ( Fig. 29C ), this species belongs to the Cypridoidea. Only one RV was collected in April, 2017, and the absence of soft parts hinders classification below the superfamily level. The specimen is probably a juvenile as indicated by the narrow calcified inner lamella.

Figures

FIGURE 29. Cypridoidea gen. et sp. indet. 1. ECNU20170412/HN1-22. A, external view of RV; B, external view of RV; C, muscle scars on RV. Scale bar: 100 μm.