Cypretta seurati Gauthier, 1929

Smith, Robin James, Lee, Jimin & Chang, Cheon Young, 2014, Nonmarine Ostracoda (Crustacea) from Jeju Island, South Korea, including descriptions of two new species, Journal of Natural History 49 (1), pp. 37-76 : 58

Cypretta seurati Gauthier, 1929

( Figure 5F–J )

Remarks

Adult females collected from Jeju Island showed a large size range from 620 through to 709 μm in length (Appendix 1). The dorsal view was noticeably variable in shape, with a width/length ratio ranging from 0.74 through to 0.81 ( Figure 5I, J ), and with the position of maximum width ranging from a position 38 to 43% of the length from the posterior margin (Appendix 1). This large variation may indicate that cryptic species exist within this widespread parthenogenetic form.

Cypretta seurati is widespread in circum-tropical regions and warmer areas of temperate zones ( Meisch et al. 2007). It has previously been reported from Korea, including Jeju Island, by Kim and Min (1991a). In our surveys, it was collected from 10 localities (4, 10, 14, 17, 25, 26, 28, 29, 32 and 35) from a wide range of habitats, including marshes, seeps, irrigation ponds, natural pools, and rivers.

Figures

Figure 5. (A–E) Cypretta karanovicae n. sp.: (A) left view of female carapace (paratype, DB40043); (B) internal view of female left valve (holotype, NIBRIV0000297035); (C) internal view of female right valve (holotype, NIBRIV0000297035); (D) dorsal view of female carapace, anterior to right (paratype, DB40043); (E) ventral view of female carapace, anterior to right (paratype, DB40043). (F–J) Cypretta seurati: (F) left view of female carapace (DB40038); (G) internal view of female left valve (DB40039); (H) internal view of female right valve (DB40039); (I) dorsal view of female carapace, anterior to right (DB40038); (J) dorsal view of female carapace, anterior to right (DB40040). Scale bar = 300 µm.