Kaliella microconus (Mousson, 1865)

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: 62-66

publication ID

http://dx.doi.org/10.3897/zookeys.531.6097

publication LSID

lsid:zoobank.org:pub:C845838E-C912-4BD8-AB4E-07980F91959E

persistent identifier

http://treatment.plazi.org/id/E21F4906-399A-ECB5-9A4E-52322EF9EED1

treatment provided by

ZooKeys by Pensoft

scientific name

Kaliella microconus (Mousson, 1865)
status

 

Taxon classification Animalia Stylommatophora Euconulidae

Kaliella microconus (Mousson, 1865)  Figure 52, 54

Nanina microconus  Mousson, 1865: 192. Coneuplecta microconus  (Mousson) H. Burrington Baker, 1941: 236; Schilthuizen and Rutjes 2001: 420; Schilthuizen et al. 2002b: 42; Schilthuizen and Vermeulen 2003: 96. Kaliella microconus  (Mousson); Schilthuizen 2004: 94; Clements et al. 2008: 2762; Schilthuizen et al., 2011: 5; Schilthuizen et al. 2013: online supplementary data. Type from Fiji.

Sitala bandongensis  Boettger, 1890: 141. Coneuplecta bandongensis  (Boettger) Van Benthem Jutting, 1950: 388. Type from Indonesia, Java, Bandung, Gunung Malabar.

Sitala baritensis  E.A. Smith, 1893: 343. Durgellina baritensis  (E.A. Smith) Rensch, 1932: 68. Type from Malaysia, Sarawak, Barit Mountain.

Sitala singularis  Godwin Austen, 1891: 39. Type from Malaysia, Borneo.

Examined material from Sabah.

Interior Province. Crocker Range N.P., Gua Laing c. 12 km North of Keningau (leg. J.J. Vermeulen, V 1094); Mahua (leg. M. Schilt huizen, BOR/MOL 2394). Gunung Trusmadi slopes, Gua Loloposon (leg. J.J. Vermeulen, V 13233). Pinangah valley, Batu Urun (= Bukit Sinobang) (leg. J.J. Vermeulen, V 1142, V 8007). Pun Batu c. 30 km West of Sepulut (leg. J.J. Vermeulen, V 1279). Sepulut valley, Batu Punggul (leg. J.J. Vermeulen, V 1988); Batu Temurung (leg. J.J. Vermeulen, V 8049; leg. M. Schilthuizen, BOR/MOL 808); Bukit Tinagas, East end of Batu Punggul limestone (leg. J.J. Vermeulen & M. Schilthuizen, V 7826; leg. M. Schilthuizen, BOR/MOL 801, BOR/MOL 3620); Gua Pungiton (leg. J.J. Vermeulen & M. Schilthuizen, V 7561); Gua Sanaron (leg. J.J. Vermeulen & M. Schilthuizen, V 7827). Kudat Province. Balambangan Island, Kok Simpul (leg. J.J. Vermeulen & M. Schilthuizen, V 9521); Gua Mundau (leg. T.S. Liew & M. Schilthuizen, BOR/MOL 4371). Sandakan Province. Kinabatangan valley, Batu Mawas (leg. T.S. Liew & M. Schilthuizen, BOR/MOL 1961, BOR/MOL 1997; leg. M. Schilthuizen, BOR/MOL 2392); Batu Materis (leg. T.S. Liew & B. Elahan, BOR/MOL 2122); Batu Keruak 2 near Sukau (leg. J.J. Vermeulen & M. Schilthuizen, V 9811, BOR/MOL 2389; leg. M. Salverda & H. van Oosten, BOR/MOL 2393); Batu Pangi (leg. J.J. Vermeulen & M. Schilthuizen, V 9664, BOR/MOL 2388); Batu Tai (not Bod Tai) near Gomantong (leg. J.J. Vermeulen & M. Schilthuizen, V 9588, BOR/MOL 2395; leg. T.S. Liew & B. Elahan, BOR/MOL 1919, BOR/MOL 1942); Batu Tomanggong Kecil (leg. J.J. Vermeulen & M. Schilthuizen, V 9706); Batu Tomanggong Besar (leg. T.S. Liew & B. Elahan, BOR/MOL 2288; leg. M. Schilthuizen, BOR/MOL 2391, BOR/MOL 802); Batu Tulug (Batu Putih) along road Lahad Datu-Sandakan, North of bridge over Kinabatangan River (leg. J.J. Vermeulen & H. Duistermaat, V 1486); Gomantong Hill 30 km South of Sandakan (leg. J.J. Vermeulen & H. Duistermaat, V 1620; leg. A. van Til, BOR/MOL 3266, BOR/MOL 3297; leg. T.S. Liew & J.P. King, BOR/MOL 3663); Tandu Batu (leg. J.J. Vermeulen & M. Schilthuizen, V 9620); Hill Ulu Sungai Resang (leg. M. Schilthuizen, BOR/MOL 2390); Unnamed hill near Sukau Police Station (leg. T.S. Liew & B. Elahan, BOR/MOL 2191, BOR/MOL 2227; leg. M. Schilthuizen, BOR/ MOL 2387). Segama Valley, North end of limestone ridge on East bank Tabin River (leg. J.J. Vermeulen & M. Schilthuizen, V 7786). Tawau Province. Batu Baturong c. 50 km W.S.W. of Lahad Datu (leg. J.J. Vermeulen & H. Duistermaat, V 1860); North slope (leg. J.J. Vermeulen, V 7598). Danum Valley (leg. T. Kimsin & H.N. Chai, BOR/MOL 804; leg. H.A. Rutjes, BOR/MOL 805). Gua Madai c. 40 km S.S.W. of Lahad Datu (leg. J.J. Vermeulen & H. Duistermaat, V 1728); N.E. end (leg. J.J. Vermeulen, V 7709). Segama valley, hill N.W. of crossing road Sandakan-Lahad Datu with the Segama River (leg. J.J. Vermeulen & H. Duistermaat, V 1680); ‘Kirk’s Cave’ 8 km North of Lahad Datu (leg. J.J. Vermeulen, V 1233); Sabahmas Cave (leg. J.J. Vermeulen, V 7825, BOR/MOL 803). Semporna area, Segarong Hills, Batu Tengar, 25 km E.S.E. of Kunak (leg. J.J. Vermeulen & H. Duistermaat, V 1790); Bukit Pababola, 25 km E.S.E. of Kunak (leg. J.J. Vermeulen & H. Duistermaat, V 1776). West Coast Province. Kinabalu N.P., Poring Hot Springs, along path to waterfall (leg. J.J. Vermeulen, V 13015); Orchid Garden (leg. J.J. Vermeulen, V 13028); Serinsim (leg. M. Schilthuizen, BOR/MOL 3075). Kota Kinabalu, Kiansom (leg. M. Schilthuizen, BOR/MOL 807).

Description.

Shell very small, thin, somewhat translucent, pale brown, conical with flat sides; apex rounded. Surface shiny. Top whorls moderately convex, outer whorls slightly convex, last whorl angular at the periphery, slightly convex below the periphery. Protoconch whorls convex, with predominant, well-spaced, very thin spiral threads, and very fine, densely and somewhat irregularly placed radial riblets. Teleoconch: Spiral sculpture predominant, above the periphery with fine, well-spaced, very thin spiral threads (usually 10 or fewer on the last whorl); below the periphery and close to it with a few to many more of such threads, towards the umbilicus sometimes with much finer, densely placed grooves. Radial sculpture teleoconch: above the periphery growth lines grading into very fine, densely and somewhat irregularly placed radial riblets; below the periphery with irregularly spaced growth lines only. Umbilicus open, very narrow. Dimensions: Height up to 3.0 mm; width up to 2.9 mm; diameters of the first four whorls 0.45-0.60 mm, 0.75-1.00 mm, 1.05-1.45 mm, 1.45-2.00 mm respectively; number of whorls up to 6 1/8; height aperture up to 0.9 mm; width aperture up to 1.4 mm. Radula: central 3-cuspid; laterals and marginals similar, serrate with 2 large cones at the tip.

Habitat in Sabah and distribution.

Primary and secondary forest on limestone and sandstone soil. Alt. up to 1000 m, elsewhere up to 1700 m alt. Sabah: widespread. Also in Sarawak; Kalimantan. Distribution elsewhere: Vietnam; Peninsular Malaysia to Java; Eastwards to Australia; Fiji; Samoa.

Remarks.

Information on the radula is from Van Benthem Jutting (1950). No Sabah material included in Kaliella microconus  has been checked for radula characters.

Kingdom

Animalia

Phylum

Mollusca

Class

Gastropoda

Order

Stylommatophora

Family

Euconulidae

Genus

Kaliella

Loc

Kaliella microconus (Mousson, 1865)

Vermeulen, Jaap J., Liew, Thor-Seng & Schilthuizen, Menno 2015

2015
Loc

Durgellina baritensis

Thiele 1928

1928