Diplommatina pupaeformis Theobald 1870

Information from the abstract

26Diplommatina pupaeformisTheobald, 1870 Fig. 19 C – F Diplommatina pupaeformis Theobald, 1870: 398. Type locality: Shan States. Pfeiffer 1875: 84, 85. Theobald 1876: 42. Godwin-Austen 1884: pl. 46, figs 4, 4 a. Godwin-Austen 1886: 182. Gude 1921: 329. Diplommatina salwiniana var. pupaeformis — Nevill 1878: 285. Diplommatina (Eudiplommatina) pupaeformis — Kobelt and Möllendorff 1898: 137. Diplommatina (Diplommatina) pupaeformis — Kobelt 1902: 442. Type material examined. Myanmar • Possible syntypes. NMW 1894.015. 00102 (3 shells; Fig. 19 D – F) from Shan State; Fedden coll. Other material. Myanmar • NMW 1955.158. 27985 (1 shell; Fig. 19 C) from Upper Salwin, Shan State Godwin-Austen ex. Melvill-Tomlin coll. Diagnosis. Shell sinistral, fusiform to almost pupilliform, whitish or transparent yellow. Whorls ~ 7 ½ and slightly convex; spire conical; suture wide, deep. Protoconch ~ 1 ¾ whorl, nearly smooth, without radial ribs or with weak wrinkles and coalescing round malleated pits. Teleoconch with delicate costae then becoming strong, regularly spaced radial ribs towards aperture. No spiral striation. Penultimate whorl slightly wider than last whorl. Aperture rounded; columellaris distinct, slightly directed downward to palatal wall. Peristome broadly expanded; lip thickened, multi-layered. Umbilicus sealed. Distribution. This species is currently known only from Shan State and is likely endemic to the region. Remarks. This is the only one of the four diplommatinid species described by Theobald (1870) for which the type series could be located (T. White, B. Rowson, and J. Gallichan, pers. comm.). In the introduction, Theobald (1870: 398) stated that the specimens were obtained from Mr. Fedden, who had collected them after returning from the Upper Salwin. The NMW, Cardiff, holds a lot from the Fedden collection containing three shells, and with the collection locality labelled ‘ Shan States, Burmah’, which are considered syntypes.

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