Additions to the knowledge of the land snails of Sabah (Malaysia, Borneo), including 48 new species
Author
Vermeulen, Jaap J.
Author
Liew, Thor-Seng
Author
Schilthuizen, Menno
text
ZooKeys
2015
531
1
139
http://dx.doi.org/10.3897/zookeys.531.6097
journal article
http://dx.doi.org/10.3897/zookeys.531.6097
1313-2970-531-1
C845838EC9124BD8AB4E07980F91959E
Taxon classification Animalia Stylommatophora Euconulidae
Kaliella gregaria (Tillier & Bouchet, 1988)
Figure 59
Gunongia gregaria
Tillier & Bouchet, 1988: 264.
Kaliella gregaria
(Tillier & Bouchet)
Liew et al., 2010
: Appendix S1 in online Supporting Information. Type from Malaysia, Sabah, Kinabalu N.P.
Examined material from Sabah.
West Coast Province. Kinabalu N.P., Laban Rata (leg. Schilthuizen & P. Koomen, V 13531); Bowen route between 3320 and 3376 m (leg. T.S. Liew, V 14329, BOR/MOL 6038, BOR/MOL 6039).
Description.
Shell small, very thin, somewhat translucent, greenish or brownish, depressed-conical with flat sides; apex rounded. Surface shiny. Whorls moderately convex, last whorl angular and slightly compressed at the periphery, rounded above and below the periphery. Protoconch whorls convex, with numerous fine, rather densely placed radial riblets; spiral sculpture subordinate and inconspicuous (visible at 40 times magnification), numerous very densely placed grooves. Teleoconch: Last whorl with a peripheral spiral thread coinciding with the suture of the penultimate whorl, above and below this numerous continuous, fine, densely and regularly placed spiral grooves. Radial sculpture: above the periphery rather distinct, irregularly spaced, somewhat raised growth lines, next to these fine, densely and regularly placed (about as densely as the spiral grooves) riblets; below the periphery with similar but less distinct radial sculpture. Umbilicus closed. Dimensions: Height up to 5.2 mm; width up to 6.8 mm; diameters of the first three whorls c. 0.75 mm, c. 1.65 mm, c. 3.25 mm respectively; number of whorls up to c. 4, height aperture up to 3.4 mm; width aperture up to 4 mm.
Figure 59.
Kaliella gregaria
(Tillier & Bouchet, 1988). A Frontal view B Umbilical view C Apical view (Malaysia, Sabah, Kinabalu N.P., V 14329, aperture reconstructed).
Habitat in Sabah and distribution.
Subalpine forest on diorite bedrock. Alt. 3300-3400 m. Sabah: Mount Kinabalu (summit trail area). Endemic to Sabah.
Cross diagnosis.
The whorls increase faster in width than in any other Borneo
Kaliella
species. In this respect
Kaliella sublaxa
is most similar.