Kaliella doliolum (Pfeiffer, 1846)

Vermeulen, Jaap J., Liew, Thor-Seng & Schilthuizen, Menno, 2015, Additions to the knowledge of the land snails of Sabah (Malaysia, Borneo), including 48 new species, ZooKeys 531, pp. 1-139: 88-89

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Kaliella doliolum (Pfeiffer, 1846)


Taxon classification Animalia Stylommatophora Euconulidae

Kaliella doliolum (Pfeiffer, 1846)  Figure 74

Helix doliolum  Pfeiffer, 1846: 41. Kaliella doliolum  (Pfeiffer) Von Moellendorff, 1890: 205; Clements et al. 2008: 2762; Schilthuizen et al. 2011: 5; Schilthuizen et al. 2013: 544, and online supplementary data. Liardetia doliolum  (Pfeiffer) Van Benthem Jutting, 1950: 410. Type from Philippines, Cebu, Sibonga.

Sitala (?) orchis  Godwin Austen, 1891: 40. Type from Malaysia, Sabah, Labuan.

Examined material from Sabah.

Interior Province. Sepulut valley, Batu Punggul (leg. J.J. Vermeulen, V 1982). Kudat Province. Balambangan Island, Kok Simpul (leg. J.J. Vermeulen & M. Schilthuizen, V 9537, BOR/MOL 2413; leg. T.H. Liew, Sazilin & Ramlan, BOR/MOL 3696). Banggi Island, South end, Karakit Hill (leg. J.J. Vermeulen & M. Schilthuizen, V 9500, BOR/MOL 2411). Sandakan Province. Gomantong Cave (leg. J.P. King, BOR/MOL 2412; leg. A. van Til, BOR/MOL 3277, BOR/MOL 3299; leg. T.S. Liew & J.P. King, BOR/MOL 3662). Pulau Mataking, Easternmost island of the Semporna-Sulu Chain (leg. G.W.H. Davison, V 11517). Tawau Province. Batu Baturong c. 50 km WSW of Lahad Datu (leg. J.J. Vermeulen & H. Duistermaat, V 1863). Semporna area, Bukit Tengkorak, 5 km South of Semporna (leg. M. Schilthuizen & A.S. Cabanban, V 13482); Segarong Hills, Bukit Pababola, 25 km E.S.E. of Kunak (leg. J.J. Vermeulen & H. Duistermaat, V 1771); Bohey Dulang Island (leg. T.S. Liew, BOR/MOL 4634); Tetagan Island (leg. T.S. Liew & Abdul, BOR/MOL 5022; leg. T.S. Liew, Abdul & Ladja, BOR/MOL 5031); Mantabuan Island (leg. T.S. Liew & Abdul, BOR/MOL 5039, BOR/MOL 5050); Sibuan Island (leg. T.S. Liew & Abdul, BOR/MOL 5062, BOR/MOL 5070); Maiga Island (leg. T.S. Liew & Abdul, BOR/MOL 5078; leg. Abdul & Ladja, BOR/MOL 5091). West Coast Province. Pulau Tiga in Kimanis Bay (leg. J.J. Vermeulen, V 11340; leg. UMS students, BOR/MOL 853).


Shell small, rather thin, slightly translucent or opaque, (pale) brown, rather low-conical with approx. flat sides; apex broadly rounded. Surface with a silky luster. Whorls (moderately) convex, last whorl rounded at the periphery (somewhat angular in juveniles), rounded above and below the periphery. Protoconch whorls convex, with numerous fine, densely placed radial riblets; spiral sculpture subordinate, very fine (just visible at 40 times magnification), densely placed grooves cutting into the crests of the radial riblets. Teleoconch: above the periphery with rather densely and somewhat irregularly placed, distinct and rather coarse radial ribs; with or without subordinate, very fine and inconspicuous, rather dense spiral striation in the interstices; below the periphery with a few irregularly spaced, inconspicuous growth lines, and with or without fine, densely placed or somewhat spaced spiral grooves. Umbilicus open, narrow. Dimensions: Height up to 2.9 mm; width up to 3.6 mm; diameters of the first four whorls 0.7-0.8 mm, 1.2-1.4 mm, 1.80-2.25 mm, 2.5-3.1 mm respectively; number of whorls up to c. 5 1/8; height aperture up to 0.7 mm; width aperture up to 1.2 mm.

Habitat in Sabah and distribution.

Primary forest, secondary forest and coastal forest on limestone bedrock and volcanic bedrock; all localities in the lowlands. Sabah: Scattered localities along the East coast and Islands around Semporna; one locality in the interior: Sepulut valley. Also in Sarawak. Distribution elsewhere: Vietnam; Peninsular Malaysia to Java; Eastwards to Australia, Pacific.

Cross diagnosis.

Shell shape similar to Kaliella scandens  ; diagnostic is the much coarser radial sculpture. If present, the spiral sculpture below the periphery is much finer.