Kaliella accepta (E.A. Smith, 1895)

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 : 82-84

Taxon classification Animalia Stylommatophora Euconulidae

Kaliella accepta (E.A. Smith, 1895) Figure 53, 71

Sitala accepta E.A. Smith, 1895: 111. Kaliella accepta (E.A. Smith) Schilthuizen, 2004: 94; Clements et al. 2008: 2762; Schilthuizen et al. 2013: online supplementary data. Type from Malaysia, Sabah, Gomantong Hill.

Examined material from Sabah.

Interior Province. Crocker Range N.P., West of the km 10 marker on the road Tambunan-Ranau, Mahua Waterfall (leg. J.J. Vermeulen & M. Schilthuizen, V 9746; leg. M. Schilthuizen, BOR/MOL 2386); Gunung Emas (leg. M. Schilthuizen, BOR/MOL 880); Ulu Kimanis at 750 m (leg. UMS students, BOR/MOL 2356). Meliau Range, east of Solonsong River at 650 m (leg. T.S. Liew, M. Schilthuizen & A. van Til, BOR/MOL 3206). Pinangah valley, Batu Urun (= Bukit Sinobang) (leg. J.J. Vermeulen, V 8003, V 8004). Sepulut valley, Batu Temurung (leg. J.J. Vermeulen, V 9924); Bukit Tinagas, East end of Batu Punggul limestone (leg. J.J. Vermeulen & M. Schilthuizen, V 7710); Gua Sanaron (leg. J.J. Vermeulen & M. Schilthuizen, V 7667). Sandakan Province. Kinabatangan valley, Batu Batangan (leg. M. Schilthuizen, BOR/MOL 2374); Gomantong cave (leg. A. van Til, BOR/MOL 3324, BOR/MOL 3337; leg. M. Schilthuizen, BOR/MOL 876, leg. T.S. Liew & J.P. King, BOR/MOL 3658); Batu Keruak 2 near Sukau (leg. J.J. Vermeulen & M. Schilthuizen, V 9797, BOR/MOL 2375; leg. M. Salverda & H. van Oosten, BOR/MOL 2371; leg. T.S. Liew & B. Elahan, BOR/MOL 1853, BOR/MOL 1887); Batu Mawas (leg. T.S. Liew & M. Schilthuizen, BOR/MOL 1995); Batu Materis (leg. M. Schilthuizen, BOR/MOL 2372, BOR/MOL 2397; leg. T.S. Liew & B. Elahan, BOR/MOL 2087, BOR/MOL 2117, V 13463); Batu Pangi (leg. J.J. Vermeulen & M. Schilthuizen, V 9657, BOR/MOL 2377); Batu Tai (not Bod Tai) near Gomantong (leg. J.J. Vermeulen & M. Schilthuizen, V 9592, BOR/MOL 2369; leg. T.S. Liew & B. Elahan, BOR/MOL 1917; leg. M. Schilthuizen, BOR/MOL 2378, BOR/MOL 2381); Hill Sg. Resang (leg. M. Schilthuizen, BOR/MOL 2382, BOR/MOL 2385); Batu Tomanggong Kecil (leg. J.J. Vermeulen & M. Schilthuizen, V 9701, BOR/MOL 2376; leg. T.S. Liew & B. Elahan, BOR/MOL 2028, BOR/MOL 2057); Tandu Batu (leg. J.J. Vermeulen & M. Schilthuizen, V 9618, BOR/MOL 2370); Batu Tomanggong Besar (leg. M. Schilthuizen, BOR/MOL 874, BOR/MOL 2383, BOR/MOL 2380; leg. T.S. Liew & B. Elahan, BOR/MOL 2257, BOR/MOL 2287; leg. M. Salverda & H. van Oosten, BOR/MOL 2373); unnamed limestone hill near Sukau Police Station (leg. T. S. Liew & Badul, V 13502; leg. M. Schilthuizen, BOR/MOL 2379; leg. T.S. Liew, BOR/MOL 2157; leg. T.S. Liew & B. Elahan, BOR/MOL 2190, BOR/MOL 2224, V 13502). Segama Valley, North end of limestone ridge on East bank Tabin River (leg. J.J. Vermeulen & M. Schilthuizen, V 7785, BOR/MOL 871; leg. T. Kimsin & H.N. Chai, BOR/MOL 872). Tawau Province. Batu Baturong, North slope (leg. J.J. Vermeulen, V 7600). Danum Valley (leg. UMS students, BOR/MOL 828; leg. M. Schilthuizen, BOR/MOL 837, BOR/MOL 875, BOR/MOL 877, BOR/MOL 3617; leg. T. Kimsin & H.N. Chai, BOR/MOL 873; leg. H.A. Rutjes, BOR/MOL 878, BOR/MOL 879). Gua Madai c. 40 km S.S.W. of Lahad Datu, N.E. end (leg. J.J. Vermeulen, V 7708). Segama valley, ‘Kirk’s Cave’ 8 km North of Lahad Datu (leg. J.J. Vermeulen, V 1234); Sabahmas Cave (leg. J.J. Vermeulen, V 7830). Semporna area, Segarong Hills, Bukit Pababola, 25 km E.S.E. of Kunak (leg. J.J. Vermeulen & H. Duistermaat, V 1774); Bod Gaya Island (leg. M. Schilthuizen & A.S. Cabanban, BOR/MOL 3547; leg. T.S. Liew, BOR/MOL 4673; leg. T.S. Liew, Abdul & Ladja, BOR/MOL 4753, BOR/MOL 4780, BOR/MOL 4791, BOR/MOL 4807, BOR/MOL 4846, BOR/MOL 4880). Tawau Hills N.P., path up to Bukit Bombalai (leg. J.J. Vermeulen, V 13154). West Coast Province. Crocker Range N.P., km 54 marker on the road Kota Kinabalu-Tambunan, Gunung Mas (leg. J.J. Vermeulen & M. Schilthuizen, V 9765). Kinabalu N.P., Poring Hot Springs, along path to waterfall (leg. J.J. Vermeulen, V 13013); Serinsim (leg. M. Schilthuizen, BOR/MOL 3065).

Description.

Shell small, rather thin, somewhat translucent or opaque, (pale) yellow-corneous to brown-corneous, (somewhat depressed) conical with convex sides; apex broadly rounded. Surface glossy or shiny. Whorls moderately convex, the last whorl more or less angular at the periphery, rounded above, rounded to almost flat below the periphery. Protoconch whorls convex, with spaced radial riblets and usually subordinate (sometimes equally distinct), very fine spiral grooves; usually these are reduced to spiral rows of minute, shallow identations; often the protoconch is almost smooth. Teleoconch: Last whorl with a peripheral spiral thread coinciding with the suture of the penultimate whorl, above this with very fine, inconspicuous, densely and regularly placed radial riblets locally, or with a few growth lines only; with or without traces of very fine, inconspicuous spiral striation, below the periphery usually with numerous fine, moderately and regularly spaced, continuous spiral grooves which are most distinct towards the periphery. Umbilicus open, narrow. Dimensions: Height up to 2.8 mm; width up to 3.2 mm; diameters of the first four whorls 0.5-0.8 mm, 0.90-1.35 mm, 1.5-2.0 mm, 2.0-2.8 mm respectively; number of whorls up to 5; height aperture up to 1.2 mm; width aperture up to 1.6 mm.

Habitat in Sabah and distribution.

Primary and secondary forest on limestone, sandstone and volcanic soil, up to 1400 m alt. Sabah: widespread. Also in Kalimantan. Endemic to Borneo.

Cross diagnosis.

Adult or nearly adult shells differ from Kaliella barrakporensis by the lower conical spire with more convex sides and a more broadly rounded apex. Usually, the sculpture is less distinct than in Kaliella barrakporensis , and the shells are glossier. Juveniles of both species are sometimes difficult to keep apart.