Diplommatina sperata Blanford 1862

Information from the abstract

29Diplommatina sperataBlanford, 1862 Fig. 20 C Diplommatina sperata Blanford, 1862: 143, 144. Type locality: in montibus Arakan a Pegu secernentibus. Pfeiffer 1865: 10. Godwin-Austen 1868: 84, pl. 4, figs 1, 1 a. Theobald and Stoliczka 1872: 330. Theobald 1876: 42. Nevill 1878: 284. Godwin-Austen 1884: pl. 46, figs 5, 5 a. Godwin-Austen 1886: 179. Gude 1921: 335, 336. Budha et al. 2017: 22, figs 8 b, 9 n. Diplommatina (Eudiplommatina) sperata — Kobelt and Möllendorff 1898: 138. Diplommatina (Diplommatina) sperata — Kobelt 1902: 446. Budha et al. 2015: 7. Type material examined. Myanmar • Possible syntypes. NHMUK 1888.12.4.134 –137 (4 shells; Fig. 20 C) from Maii, Arakan Coast; W. Theobald coll. Diagnosis. Shell dextral, ovate-fusiform, translucent, pale yellowish or whitish. Whorls ~ 5–6, well rounded; spire depressed-conical; suture wide, deep. Teleoconch with wide, equally spaced radial ribs throughout. Penultimate whorl well rounded, wider than last whorl. Aperture ovate; columellaris prominent, directed downward. Peristome expanded, double, multi-layered; basal edge slightly sinuous and protruded; inner peristome broadly expanded on parietal side. Umbilicus closed. Distribution. This species was originally known from its type locality in the Arakan Hills, Bago Region, Myanmar. It was later recorded from ‘ Moditoung’, likely corresponding to the Modi Taung Hills in Padauang Township, Pyay District, Bago Region, and from Mai-i, likely in the area of Ma-ei Town, Thandwe District, Rakhine State (Theobald and Stoliczka 1872). More recently, it has been reported from Nepal (Kuznetsov and Schileyko 1997; Budha et al. 2015, 2017). Remarks. This species has also been reported from several localities in southwestern to eastern Myanmar, including Ayeyarwady, Bago, and Tanintharyi regions (Blanford 1865). It appears to have a broad distribution across Bangladesh, India, and Nepal (Budha et al. 2015; Preece et al. 2022). However, Budha et al. (2017) noted that specimens from Nepal tend to have thinner shells and much thinner peristomal lips than the syntypes, and are therefore provisionally assigned to this species.

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 · Protist diversity and phylogeny · Marine Sponges and Natural Products