Pseudostrandesia mamarilorum ( Victor & Fernando, 1981c )

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 : 217

Pseudostrandesia mamarilorum ( Victor & Fernando, 1981c)

Figures 10 A–B and 11.

1981c Strandesia mamarilorum n. sp. — Victor & Fernando: 490 –493, figs. 110–126.

2009 Pseudostrandesia mamarilorum — Savatenalinton & Martens: 19.

Material examined: Three females and two female valves from WN5, two females ( ECNU 20170417/HN35–36) dissected; 18 females from 11DZ17, one female ( ECNU 20171114/HN45) dissected.

Dimensions: Female, LV, n = 2, length 1.069 –1.073 mm, height 0.625 mm; RV, n = 2, length 1.041 –1.044 mm, height 0.602 mm.

Description: Carapace sub-elliptical with four purple bands. Surface of carapace slightly reticulated ( Fig. 11A ). LV overlapping RV both anteriorly and posteriorly. In lateral view, anterior margin more rounded than posterior. Greatest height anterior of mid-length. LV with inner groove along margins except dorsal margin ( Fig. 11B ). Calcified inner lamella with inner list anteriorly. Two tooth-bristles on third endite of Mx slightly serrated. Basal segment of L6 with two d setae ( Fig. 10A ). UR attachment well-developed, with Triebel’s loop situated at middle of dorsal and ventral branches ( Fig. 10B ).

Distribution: This species has been found in the Philippines, Malaysia and Indonesia ( Victor & Fernando 1981c) and Thailand ( Savatenalinton & Martens 2010). This species was found in Wanning and Danzhou on Hainan Island.

Remarks: This species is assigned to the genus Pseudostrandesia because of the absence of seta d on L5 and the mid-position of the Triebel’s loop on UR attachment ( Fig. 10B ).

Figures

FIGURE 10. A–B, Pseudostrandesia mamarilorum (Victor & Fernando, 1981c). Female. ECNU20170417/HN35. A, L6; B, UR attachment. C, Pseudostrandesia calapanensis (Tressler, 1937). ECNU20170413/HN33, female, UR attachment. Scale bars: 100 μm.

FIGURE 11. Pseudostrandesia mamarilorum (Victor & Fernando, 1981c). Female. ECNU20170417/HN35. A, external view of RV; B, internal view of LV. Scale bar: 100 μm.