Plectostoma wallacei teinostoma (Vermeulen, 1994)

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

Plectostoma wallacei teinostoma (Vermeulen, 1994) Figure 12E

Opisthostoma (Plectostoma) wallacei teinostoma Vermeulen, 1994: 129, figs 59A, B, 71.

Type locality.

"SARAWAK. 1st Div.: G. Pangga 3 km ENE of Bau".

Material examined.

Gunung Doya: ME 0716, ME 8899, ME 9031, ME 9085. Gunung Kapor: ME 0234, ME 5972, ME 9204, ME 9213, ME 9251, ME 9842. Gunung Batu: ME 0226, ME 0229, ME 0703, ME 8795.

Distribution in Borneo.

Sarawak: Kuching Division. Endemic to Borneo.

Remarks.

Living snails were observed foraging on the wet vertical limestone rock surfaces covered with mosses and lichens. Shells from Jambusan areas are very similar to Plectostoma dancei dispersum (Vermeulen, 1994) but differ by having a deep red shell colour and fine spiral striations on the shell surface.

Figures

Figure 12. A Plectostoma austeni (E. A. Smith, 1894) ME 8734 Lobang Angin B Plectostoma everetti (E. A. Smith, 1893) ME 8793 Gunung Batu C Plectostoma margaretchanae, sp. nov., MZU. MOL. 20.06 paratype Gunung Batu D Plectostoma wallacei busauense (E. A. Smith, 1893) ME 9495 Gunung Doya E Plectostoma wallacei teinostoma (Vermeulen, 1994) ME 8899 Gunung Doya F Plectostoma wallacei wallacei Ancey, 1887 ME 5898 Gunung Stulang.