Xestoleberis sagamiensis Kajiyama, 1913

Yoo, Hyunsu, Tanaka, Hayato, Tsukagoshi, Akira, Lee, Wonchoel & Karanovic, Ivana, 2019, Cytheroid ostracods (Crustacea) from South Korea, with description of a new species, Zoosystema 41 (22), pp. 419-441 : 435-436

Xestoleberis sagamiensis Kajiyama, 1913

( Figs 13 , 14 )

Xestoleberis sagamiensis Kajiyama, 1913: 8 , pl. 1, figs 26-29. — Ishizaki 1968: 42, pl. 9, figs 3, 4; 1971: 95, pl. 4, fig. 11. — Kamiya & Nakagawa 1993: 133, fig. 6 (12). — Sato & Kamiya 2007: figs 2, 4, 6, 25-26. — Ozawa & Domitsu 2010: 6, fig. 5 (21).

TYPE LOCALITY. — Misaki , Miura City, Kanagawa Prefecture, Japan .

MATERIAL EXAMINED. — South Korea. 1 ♂, intertidal-zone algae at Hujeong Beach, Hujeong 2-gil, Jukbyeon-myeon, Uljin-gun , Gyeongsangbuk-do, 37°04’12.3”N, 129°25’01.0”E, 0.1 m depth dissected on one slide, NIBRIV0000753781 , valves on the micropaleontological slide, NIBRIV0000753781 . — 4 specimens kept in 2 ml vial in 99% ethanol, NIBRIV0000834110. — 3 specimens kept in 2 ml vial in 99% ethanol.

BRIEF DESCRIPTION

Carapace ( Fig. 13 A-D)

L max = 563 Μm, L min = 530 Μm, L average = 546.6 Μm; H max = 345 Μm, H min = 327 Μm, H average = 336 Μm, N = 5 specimens. With highly arched dorsal margin, and greatest H situated slightly posterior to middle L. In dorsal view spherical egg shaped. Hemimerodont hingement type ( Fig. 13D ). Ventral margin straight. Ornament smooth with few sieve type setae. Scar print consisting of four prints in vertical row and one situated in front of vertical row ( Fig. 13C ).

Hemipenis ( Fig. 14 )

Subreniform, with asymmetrical distal lobes, right distal lobe inverted triangle shaped and left distal lobe dented and strawberry shaped. Sperm tube situated on central margin, with four bare setae near exit of sperm.

Figures

FIG. 13. — Xestoleberis sagamiensis Kajiyama, 1913, male NIBRIV0000753781: A, RV internal view, B, LV external view, C, Muscular scar (RV), D, Hingement (Hemimerodont). Abbreviations: see Material and methods. Scale bars: A, D, 100 μm; B, 200 μm; C, 50 μm.

FIG. 14. — Hemipenis of Xestoleberis sagamiensis Kajiyama, 1913, male NIBRIV0000753781. Scale bar: 100 μm.