Diplommatina angulata Theobald & Stoliczka 1872

Information from the abstract

11Diplommatina angulataTheobald & Stoliczka, 1872 Fig. 15 C – E Diplommatina angulata Theobald & Stoliczka, 1872: 331, pl. 11, fig. 3. Type locality: Prope Moulmain, provincia Martaban. Hanley and Theobald 1875: 55, pl. 140, fig. 7. Pfeiffer 1875: 78. Nevill 1878: 285. Godwin-Austen 1884: pl. 49, figs 5, 5 a. Godwin-Austen 1886: 184. Gude 1921: 302, 303. Palaiana angulata — Theobald 1876: 43. Diplommatina (Eudiplommatina) angulata — Kobelt and Möllendorff 1898: 135. Diplommatina (Diplommatina) angulata — Kobelt 1902: 424, 425. Type material examined. Myanmar • Syntypes. NHMUK 1888.12.4.232 –241 (10 shells; Fig. 15 C, D) from Chouktalon, Moulmein; Theobald coll. Other material. Myanmar • NHMUK 20240015 (3 shells; Fig. 15 E) from Moulmein, Burma; Sykes coll. • NHMUK 20240016 (1 shell) from Burma; Moulmein; Salisbury coll. • NHMUK 20240017 (4 shells) from India; MacAndrew coll. Diagnosis. Shell dextral, conical-fusiform, translucent, whitish to yellowish. Whorls ~ 5–6, angular; spire conical; suture wide, deep. Teleoconch with wide, equally spaced radial ribs throughout. Penultimate whorl well rounded, wider than last whorl. Aperture rounded; columellaris strong, distinct, directed downward. Peristome expanded, double, multi-layered. Umbilicus narrowly open. Distribution. The species is currently known from its type locality, corresponding to present-day Mawlamyine District in Mon State, Myanmar. Remarks. Diplommatina angulata Stanisic, 2010, described from Queensland, Australia, is a junior primary homonym of D. angulata Theobald & Stoliczka, 1872, from Myanmar (Theobald and Stoliczka 1872; Stanisic et al. 2010; MolluscaBase 2025). The two nominal taxa are clearly distinct in shell morphology and distributional range (Stanisic et al. 2010: 74, 75 and text figure). The younger name is invalid under the ICZN (1999: Arts 57.2, 60.3). As no available junior synonym exists, a replacement name is required to maintain nomenclatural stability. We therefore propose Diplommatina stanisici Tongkerd, nom. nov., as the new substitute name for the Australian species. The holotype of D. stanisici nom. nov. is the holotype of the replaced name (QM MO 50138), and is deposited in the Queensland Museum, Australia.

Why this record is monitored

This record has an Impact Signal of 70/100 based on recency, source, collaboration, and bibliographic signals. It prioritizes monitoring and is not a judgment of research quality.

Related topics: Diatoms and Algae Research · Mollusks and Parasites Studies · Aquatic Invertebrate Ecology and Behavior