Macrochlamys tersa (Issel, 1874)

Marzuki, Mohammad Effendi bin, Liew, Thor-Seng & Mohd-Azlan, Jayasilan, 2021, Land snails and slugs of Bau limestone hills, Sarawak (Malaysia, Borneo), with the descriptions of 13 new species, ZooKeys 1035, pp. 1-113 : 1

Macrochlamys tersa (Issel, 1874) Figures 22E , 51B

Nanina (Macrochlamys) tersa Issel, 1874: 399-400, pl. 5, figs 1-4.

Type locality.

“Borneo”.

Material examined.

Gunung Doya: ME 8936, ME 8957, ME 9037. Gunung Kapor: ME 2880, ME 2882, ME 2945, ME 3040, ME 8089, ME 8771, ME 8966, ME 9048, ME 9620. Kampung Padang Pan: ME 6680. Lobang Angin: ME 9142, ME 9152, ME 9272. Gunung Batu: ME 1858, ME 2855, ME 2868, ME 8827.

Distribution in Borneo.

Sarawak: Kuching, Serian, and Miri divisions. Sabah: Kudat, West Coast, Interior, and Tawau divisions. Endemic to Borneo.

Remarks.

Living snails were observed foraging among leaf litter and plant debris near the cliff in a lowland limestone forest. It differs from other Bornean Macrochlamys species by having a moderately sized pale brown shell with very fine closely spaced spiral grooves.

Figures

Figure 22. A Damayantia carinata Collinge, 1901 ME 9054 Lobang Angin B Hemiplecta densa (A. Adams & Reeve, 1850) ME 9241 Gunung Doya C Macrochlamys infans (L. Pfeiffer, 1854) ME 2854 Gunung Batu D Macrochlamys saintjohni (Godwin-Austen, 1891) ME 9900 Gunung Kapor E Macrochlamys tersa (Issel, 1874) ME 9620 Gunung Kapor F Vitrinula glutinosa (Metcalfe, 1851) ME 8782 Gunung Kapor.

Figure 51. Living snails from Bau A Damayantia carinata Collinge, 1901 Uncat. Gunung Kapor B Macrochlamys tersa (Issel, 1874) ME 8966 Gunung Kapor C Hemiplecta densa (A. Adams & Reeve, 1850) ME 4724 Gunung Kapor D Vitrinula glutinosa (Metcalfe, 1851) ME 8750 Lobang Angin. All not to scale.