Diplommatina spinosa Godwin-Austen, 1889
“The differences from D. ferrumequinum are given. Diplommatina spinosa does not have a strictly conical shell, and has the longitudinal palatalis not covered by the peristome on the outer surface of the shell” (Vermeulen, 1993)
Godwin-Austen (1889) original descriptions on Diplommatina spinosa – “Shell dextral, elongately turreted; sculpture worn off; colour completely faded; spire high, attenuate; apex pointed; suture moderate; whorls 9, the penultimate and antepenultimate equal, last ascending, rounded above, slightly angulate below, where in the perfect shell numerous spines were developed, the circular bases showing where they once projected; aperture broadly ovate, sub-oblique; peristome double; outer lip rises halfway up the penultimate whorl, covering it in front; columellar margin straight, with well-developed blunt tooth.”
Kobelt (1902) descriptions on Diplommatina (Diplommatina) spinosa – “Schale rechtsgewunden, getürmt; Gewinde hoch, Apex spitz; Naht massig tief; 9 Windungen, drittletzte und vorletzte gleich gross, letzte ansteigend, unten leicht kantig, an der Kante mit Spuren von Stacheln (nur abgeriebene Schalen bekannt); Mündung weit, eiförmig, ziemlich schräg; Mundrand doppelt, Aussenlippe bis zur Mitte der vorletzten Windung ansteigend; Spindelrand gerade, mit deutlichem stumpfen Zahn.”
Vermeulen (1993) descriptions on Diplommatina spinosa – “Shell dextral, fusiform or conical, if conical with the tuba distinctly moved inwards, last or penultimate whorl widest; sides flat. Whorls 7¼-8 1/8, convex. Suture impressed. Constriction about level with the the edge between the parietal and columellar side of the peristome, with 2 parietales, 1 longitudinal palatalis which is not covered by the peristome on the outer surface of the shell, 1 transversal palatalis, 1 columellaris. Tuba 3/4-7/8 whorl. Radial ribs continuing up to the peristome, widely spaced, hardly visible but half-way the whorl with an almost tubular projection, in adults sometimes abraded to a semi-circular scar. Spiral striation absent. Umbilicus open, narrow. Aperture tilted up to 40° with regard to the coiling axis; columellaris distinct, directed downwards. Peristome double, expanding; palatal side not sinuous, without edge; basal side without edge; basal edge not sinuous, rounded; inner peristome somewhat expanding beyond the outer, with a palatal lip, free and erect on the columellar side, expanding on the parietal side.”
Diplommatina spinosa – “Size: maj. diam. 2.9 mm; alt. axis 6 mm; diam. ap. 2.4 mm.” (Godwin-Austen, 1889); Diplommatina spinosa – “Height 4.9-6.0 mm; width 2.5-3.3 mm; index 1.8-2.1. Height aperture 1.0-1.3 mm; width 1.1-1.3.” (Vermeulen, 1993)
Type locality – “Cave exploration A” leg. A. Everett (Godwin-Austen, 1889)
Other localities – “Borneo. Sarawak. 1st Div.: quarry km 31.6 road Kuching-Bau.” Leg. Auffenberg (Vermeulen, 1993); “Borneo. Sarawak. 1st Div.: G. Doya 2 miles SE of Bau.” Leg. Wilford (Vermeulen, 1993); “Borneo. Sarawak. 1st Div.: G. Wah S.of Braang, 23 miles S. of Kuching.” Leg. Wilford (Vermeulen, 1993); “Borneo. Sarawak. 1st Div.: 7.5 km WNW. Of Kpg. Piching, near Serian.” (Vermeulen, 1993)