Nerita insculpta Récluz, 1841

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 : 49

* Nerita insculpta Récluz, 1841

Figs. 2G–H and 4C

Nerita insculpta Récluz, 1841: 152 .

Amphinerita insculpta – Vermeij & Hoeft, 2018: 499.

Nerita (Amphinerita) insculpta – Eichhorst, 2016a: 505, pl. 139; Susintowati et al., 2018: 4.

Material. UBDM.7.00050. Sample collected from ES.

Abundance. Locally rare.

Habitat. Rocky shore. High-shore.

Local distribution. ES only.

Ecology and conservation. Inhabiting the upper intertidal zone, extending into the supratidal zone, high shore specialist N. insculpta is able to tolerate highly stressful environmental conditions (such as prolong exposure to extreme ambient air), with the littorinid snail Echinolittorina malaccana (e.g., Vermeij & Hoeft 2018; Brahim et al. 2019). Although several observations of this species have been made, it usually occurs in single numbers. High level of conservation concern because species is locally rare.

Biogeographical distribution. BY and SR of Western Coral Triangle. Generally distributed in Indo-West Pacific ( Frey 2010b; Vermeij & Hoeft 2018).

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.