Nerita albicilla Linnaeus, 1758

Mustapha, Nurshahida, Baharuddin, Nursalwa, Tan, Siong Kiat & Marshall, David J., 2021, The neritid snails of Brunei Darussalam: their geographical, ecological and conservation significance, Ecologica Montenegrina 42, pp. 45-61 : 47

Nerita albicilla Linnaeus, 1758

Figs. 2A–B and 4A

Nerita albicilla Linnaeus, 1758: 778 .

Nerita albicilla – Tan & Clements, 2008: 483, figs. 2-1, 2-2; Zvonareva & Kantor, 2016: 407 , figs. 3A, 3B. Nerita (Theliostyla) albicilla – Eichhorst, 2016a: 441, pls. 105, 106.

Material. UBDM.7.00010. Sample was collected from PP.

Abundance. Very abundant.

Habitat. Rocky shore. Mid to low shore.

Local distribution. PJ, ES and PP.

Ecology and conservation. Populations are localised and common on natural rocky shores alongside another Neritidae species, N. chamaeleon . At ES and PP, this species gains protection through restricted access to the shore. Inhabiting the lower intertidal zone, N. albicilla is buffered against coastal edge deforestation causing increase in suspended sediment loads. This species is of low conservation concern in Brunei because they are highly abundant locally and currently resilient.

Biogeographical distribution. Associated with Western Coral Triangle at SB, PL, HI, BY, SR and BK and Sunda Shelf at TR, SW, AN, VN and SG. Generally distributed in Indo-West Pacific ( Frey 2010b).

Figures

Figure 2. Neritidae species found associated with lower estuarine, mangroves and rocky shores of Brunei Darussalam, shown in apertural and abapertural view. A–B. Nerita albicilla Linnaeus, 1758. C–D. Nerita chamaeleon Linnaeus, 1758. E–F. *Nerita patula Récluz, 1841. G–H. *Nerita insculpta Récluz, 1841. I–J. Nerita litterata Gmelin, 1791. K– L. Nerita undata Linnaeus, 1758. M–N. Nerita balteata Reeve, 1855. O–P. Nerita planospira Anton, 1838. Q–R. *Nerita exuvia Linnaeus, 1758. S-T. *Nerita histrio Linnaeus, 1758. (*) indicates a new species record for Brunei Darussalam. Scale bar represents 3 mm.

Figure 4. Side view showing off spire plasticity amongst Nerita species found in Brunei Darussalam. A. Nerita albicilla Linnaeus, 1758. B. Nerita litterata Gmelin, 1791. C. Nerita insculpta Récluz, 1841. D. Nerita patula Récluz, 1841. E. Nerita chamaeleon Linnaeus, 1758. F. Nerita undata Linnaeus, 1758. G. Nerita balteata Reeve, 1855. H. Nerita planospira Anton, 1838. I. Neripteron violaceum (Gmelin, 1791). J. Neripteron cornucopia (Benson, 1836). K. Vittina coromandeliana (G. B. Sowerby I, 1836). L. Neritodryas dubia (Gmelin, 1791). M. Clithon oualaniense (Lesson, 1831). N. Neripteron spirale (Reeve, 1855). O. Nerita histrio Linnaeus, 1758. P. Nerita exuvia Linnaeus, 1758. Markings on I and J: the spire hangs further midway in N. cornucopia compared to N. violaceum. Scale bar on top represents 3 mm, unless stated otherwise.