Hemicypris barbadensis Broodbakker, 1983

Smith, Robin James & Chang, Cheon Young, 2020, Taxonomic assessments of some Cyprinotinae Bronstein, 1947 species (Crustacea: Ostracoda) from Japanese and Korean rice fields, including (re-) descriptions of six species and a review of the type species of the subfamily, Zootaxa 4795 (1), pp. 1-69 : 48

Hemicypris barbadensis Broodbakker, 1983

( Figs 4I & J , 25G )

1983 Hemicypris barbadensis n. sp. —Broodbakker: 146–152, 154–156, Figs 1 , 5 g-n, 7, 8, 9a, Tables I, II, III, V.

1984 Hemicypris barbadensis— Broodbakker: 34, 47.

1994 Hemicypris barbadensis Broodbakker, 1983 —Martens & Behen: 27, 44.

1994 Hemicypris barbadensis— Little & Hebert: 552, table 1.

1997 Hemicypris barbadensis Broodbakker, 1983 —Holmes: 140.

2000 Hemicypris barbadensis Broodbakker, 1983 —Maddocks: Appendix 2.

2004 Hemicypris kawagaensis [sic] sp. nov.—Okubo: 27–28, figs 12 c–f (fide herein).

2008 Hemicypris barbadensis Broodbakker, 1983 —Savatenalinton & Martens: Table 1.

2008 Hemicypris kawagaensis [sic] Okubo, 2004 —Savatenalinton & Martens: Table 1.

2011 Hemicypris barbadensis Broodbakker, 1983 —Martens & Savatenalinton: Table 2.

2011 Hemicypris kawagaensis [sic] Okubo, 2004 —Martens & Savatenalinton: Table 2.

2012 H. barbadensis Broodbakker 1983 b—Karanovic: 437, 441.

2012 H. kawagaensis [sic] Okubo 2004 —Karanovic: 438, 441.

2013 Hemicypris barbadensis Broodbakker, 1983 —Martens et al.: No page numbers.

2014 Hemicypris barbadensis Broodbakker, 1983 —Valls et al.: 3, 5–8, fig. 2 a–f, Table 2.

2017b Hemicypris barbadensis— Savatenalinton: 510, 511.

2017 H. barbadensis —Rasouli & Aygen: 430.

2018 Hemicypris kawagaensis [sic] Okubo, 2004 nomen nudum—Smith et al.: Appendix.

2018 Hemicypris barbadensis Broodbakker, 1983 —Smith et al.: Appendix.

2019 Hemicypris barbadensis Broodbakker, 1983 —Meisch et al.: 64.

Material examined. JAPAN • 1 ♀, “ Hemicypris kawagaensis 010810 ”, valves and appendages mounted on a glass slide in an unknown matrix; [Kagawa Prefecture]; Ichiro Okubo leg.; LBM 1430009514 .

Remarks. This species has been reported from Japan as Hemicypris kawagaensis Okubo, 2004 nomen nudum. The species name is most probably a misspelling of kagawaensis , as the specimens were from Kagawa Prefecture, and the name is spelt Hemicypris kagawaensis in the figure captions of Okubo (2004). As there was no designation of type material, and no information as to where the specimens are deposited (contravening sections 16.4.1 and 16.4.2 of the ICZN code), this species is a nomen nudum. An adult female specimen of Hemicypris kagawaensis nomen nudum provided by Ichiro Okubo and examined for this study shows a strong resemblance to Hemicypris barbadensis . In particular, the lateral outline of the valves, heavily pitted carapace, and distinctively curved caudal rami of Hemicypris kagawaensis are very similar to those of Hemicypris barbadensis ( Figs 4I & J , 25G ), although the Japanese specimen is slightly higher (height/length of left valve 0.64) than the specimen figured by Broodbakker (1983) (height/length of left valve 0.61). The Kenyan species Hemicypris aurita (Klie, 1939) is also very similar ( Broodbakker 1983; 1984), differing only in the antero-dorsal margin (slightly concave in Hemicypris aurita ) and the Zahnborsten of the third endite of the maxillula (both serrated in Hemicypris aurita , one serrated, one partly serrated in Hemicypris barbadensis ). Herein, Hemicypris kagawaensis nomen nudum is considered to be a junior synonym of Hemicypris barbadensis . The valves of the specimen examined are mounted in an unknown medium on a glass slide and therefore could not be photographed by SEM.

Distribution and ecology. This species has only been reported once from Japan; a few specimens were found in a rice field in Kagawa Prefecture on the island of Shikoku ( Okubo 2004). Elsewhere it is known from Barbados, Jamaica and Spain ( Broodbakker 1983; Little & Hebert 1994; Holmes 1997; Valls et al. 2014). In Barbados it was found in a temporary pool of rainwater, semi-permanent pools, a pond, and a pool connected to a spring, on clayish soils ( Broodbakker 1983). The Jamaican specimens were collected from a small permanent lake, with submergent and emergent macrophytes around the edges, and with a substrate of clayey mud; the lake may be in the zone of mixing of fresh and saline groundwaters ( Holmes 1997). In Spain it is considered an invasive species, found in rice fields near Albufera National Park near Valencia ( Valls et al. 2014).

Figures

FIGURE 1. Cyprinotus cassidula sp. nov. A, whole carapace, left view, female (LBM 1430009498). B, whole carapace, right view, female (LBM 1430009499). C, whole carapace, dorsal view, female, anterior to left (LBM 1430009498). D, right valve, internal view, female (LBM 1430009506). E, whole carapace, left view, male (LBM 1430009500). F, whole carapace, right view, male (LBM 1430009501). G, whole carapace, dorsal view, male, anterior to left (LBM 1430009500). H, right valve, internal view, male (LBM 1430009496). All specimens from type locality (Table 1, sample 4). Scale bar = 500 µm.

FIGURE 4. A & B, Cyprinotus cassidula sp. nov. (sample 10; see Table 1).A, left lateral view of whole carapace, female. B, left lateral view of whole carapace, male. C, Hemicypris megalops, whole carapace, right lateral view, female (paralectotype from Sumatra, Indonesia F12292c2, before dissection). D–F, Hemicypris posterotruncata. D & E, left lateral views of whole carapaces, females. F, dorsal view of whole carapace, anterior to left, female. G & H, Hemicypris ovata. G, paralectotype (NHMO F12264c), right view of whole carapace, female (prior to SEM). H, paralectotype (NHMO F12264b), internal view of right valve, female (before dissection). I & J, Hemicypris barbadensis (LBM 1430009514). I, left valve, internal view, female. J, right valve, internal view, female. K & L, Heterocypris savatenalintonae sp. nov. K, left lateral view of whole carapace, female. L, left lateral view of whole carapace, male. M–O, Hemicypris kibiensis (LBM 1430009515). M, left valve, internal view, female. N, right valve, internal view, female. O, high magnification transmitted light microscopy of valves. A–H, K & L, photographed while specimens submerged in water. I, J, M–O, mounted in unknown medium on glass slide.All photographs focussed stacked. Scale bar = 1506 µm for A & B, 1000 µm for C to N, 238 µm for O.

FIGURE 5. Cyprinotus cassidula sp. nov. A, antennule, male (LBM 1430009504). B, antenna, male (LBM 090524-01-014). C, mandibular palp, male (LBM 1430009502). D, alpha, beta and gamma setae of mandibular palp, male (LBM 1430009502). E, mandibular coxa, male (LBM 1430009502). F, maxillula palp and endites (setae on endites not drawn) (LBM 1430009502). G, left fifth limb palp, male (LBM 1430009502). H, right fifth limb palp, male (LBM 1430009502). All specimens from type locality (Table 1, sample 4).

FIGURE 25. A–F, Hemicypris kliei Lindroth, 1953. A, caudal ramus, female (UUZM Typ 603 h). B, caudal ramus, male (UUZM Typ 603 f). C, hemipenis (UUZM Typ 603 f). D–F, outline of hemipenes (UUZM Typ 603 j, UUZM Typ 603 e, UUZM Typ 603 f respectively). G, Hemicypris barbadensis Broodbakker, 1983, caudal ramus (LBM 1430009514).