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.