Hiatella meridionalis

• Main Authors: Zelaya, Diego G., Güller, Marina
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2023
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Bivalvia; Adapedonta; Hiatellidae; Hiatella; Hiatella meridionalis; Antarc*; Antarctica
• Online Access: https://doi.org/10.5281/zenodo.10474098; http://treatment.plazi.org/id/03E587A0FFC1FFD9FF32FF30D8C9FD50

Hiatella meridionalis (d’Orbigny, 1846) (Figs 3A–L, 4, 5, 6A, B, G, J, 7F, G) Saxicava meriodionalis d’Orbigny, 1846: 521, pl. 81, figs 21, 22. Saxicava chilensis Hupé, 1854: 379; Hupé 1858: pl. 8, figs 7, 7a; Rochebrune and Mabille 1889: H101. Saxicava antarctica : Martens and Pfeffer 1886: 113–114, pl. 4, fig. 2 (not Philippi, 1845). Saxicava lebruni Mabille and Rochebrune in Rochebrune and Mabille, 1889: H101–H102. Saxicava mollis Mabille and Rochebrune in Rochebrune and Mabille, 1889: H102–H103. Saxicava arctica var. antarctica : Melvill and Standen 1907: 151 (in part) (not Saxicava antarctica Philippi, 1845). Saxicava subantarctica Preston, 1913: 223, fig. 12. Saxicava solida : Carcelles 1944: 293–294, pl. 13, fig. 107; Carcelles 1950: 82, pl. 5, fig. 91 (not Sowerby I, 1834). Hiatella meridionalis : Zelaya 2005: 117; Simone and Penchaszadeh 2008: fig. 18 (only). Hiatella A: Laakkonen et al. 2015: 389. Type localities: Îles Malouines (= Malvinas / Falkland Islands) ( Saxicava meridionalis ); Calbuco, [41°46 ʹ S], Chile ( Saxicava chilensis ); Baie Orange [= Bahia Orange] ( Saxicava lebruni Saxicava mollis ); [Malvinas]/ Falkland Islands ( Saxicava subantarctica ). Material examined: Lectotype of Saxicava meridionalis (NHMUK 1854.12.4.772); two syntypes of Saxicava lebruni (MNHN-IM-2000-31626); one syntype of Saxicava mollis (MNHN-IM-2000-31625); lectotype of Saxicava subantarctica (designated herein: RBINS MT 753); and 94 additional lots (Supporting Information, ESM 1). Description: Shell ≤ 61.0 mm L, rectangular to ovate, longer than high, compressed to slightly inflated, with the maximum width at about the posterior third of shell length; thin to moderately solid (Figs 3A–L, 4). Subequivalve in smaller specimens, slightly to markedly inequivalve in larger specimens, with one of the valves (either the right or the less) wider and larger than the other; larger valve overlapping ventrally over the opposite valve. Posterior end of shell greatly projected; anterior end moderately projected. Posterior area of ...