Nerita planospira Anton, 1838

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 : 51

Nerita planospira Anton, 1838

Figs. 2O–P and 4H

Nerita planospira Anton, 1838: 30 .

Nerita planospira – Tan & Clements, 2008: 486, figs. 2-13, 2-14; Zvonareva & Kantor, 2016: 408 , figs. 3E, 3F.

Nerita (Ilynerita) planospira – Eichhorst, 2016a: 549, pl. 165.

Material. UBDM.7.00060. Sample was collected from PB.

Abundance. Abundant.

Habitat. Arboreal species. On mangrove tree trunks, branches, roots and on muddy banks.

Local distribution. PB, BM and PS.

Ecology and conservation. Co-habitant to N. balteata , N. planospira is suspected to exhibit similar intrinsic growth and reproductive attributes as N. balteata that could potentially constrain rapid population turnover in their habitats. In Brunei, N. planospira is placed under low conservation importance as it is widely distributed in local mangroves.

Biogeographical distribution. SB, BY and PN in Western Coral Triangle and JH, VN and SG in Sunda Shelf. In general, 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.