Orientomysis sheni (Wang and Liu, 1989) Fukuoka & Murano, 2005

Fukuoka, Kouki & Murano, Masaaki, 2005, A revision of East Asian Acanthomysis (Crustacea: Mysida: Mysidae) and redefinition of Orientomysis, with description of a new species, Journal of Natural History 39 (9), pp. 657-708 : 692-694

Orientomysis sheni (Wang and Liu, 1989) comb. nov.

( Figure 10 ) Acanthomysis sheni Wang and Liu 1989 (MS in Shen et al. 1989): 210–211, Figure 11 ; Liu and Wang 2000: 255–257, Figure 96.

Type locality

North Yellow Sea off Yantai, Shandong, China .

Material examined

One male (11.2 mm) and one female (9.2 mm), Yantai , Shangdong, China, coastal water, 30 June 1956, on loan from Liu and Wang .

Remarks

In the present examination, some characters, which were probably overlooked by Wang and Liu (MS in Shen et al. 1989), were observed. The second segment of the endopod of the maxilla is armed with three tiny spines in the male and seven in the female, among long setae on the outer margin ( Figure 10B ). Sternal processes are present on the second to sixth and eighth thoracic somites in the female ( Figure 10A ). Those on the second to sixth somites are large and blunt, and covered with numerous spinules. The seventh somite has no process. The process on the eighth somite is knob-like without spinules.

Distribution

This species has been recorded only from Chinese waters: the Bohai Sea off Hebei and the Yellow Sea off Shangdong (Wang and Liu, in Shen et al. 1989).

Figures

Figure 10. Orientomysis sheni (Wang and Liu, 1989) comb. nov. (A, B) Female (9.2 mm); (C–E) male (11.2 mm). (A) Sternal process on thoracic somites, lateral; (B) maxilla, posterior; (C) fourth pleopod, anterior; (D) distal part of fourth pleopod, posterior; (E) telson, dorsal.

Figure 11. Orientomysis tamurai (Ii, 1964) comb. nov. (A–D) Male (9.8 mm), NSMT-Cr 15599; (E) female (10.4 mm), NSMT-Cr 15599. (A) Penis, lateral; (B) fourth pleopod, posterior; (C) proximal part of uropod, ventral; (D, E) uropod and telson, dorsal.