Sermyla cf. riqueti (Grateloup, 1840)

Figs 6 E–H

Melania riqueti Grateloup, 1840: 433 .

Sermyla riqueti: Lozouet & Plaziat 2008: 114 –115, pl. 21, figs 5–6; Zvonareva et al. 2015: 8.

Material examined. Nha Phu Bay, about 10 specimens.

Abundance. Uncommon.

Measurements. Up to 13 mm (Lozouet & Plaziat 2008).

Ecological notes. Subtidal estuarine species, to be referred to the non-mangal malacofauna. Dwells buried superficially within the bottom sand of the estuarine channel (Lozouet & Plaziat 2008).

In studied sites was found buried in sediment in streams.

Relation to mangroves. Eurybiotic.

Distribution in Vietnam. Central coast.

General distribution. Indian and western Pacific Ocean, with a wide distribution in south and South-East Asia (Brandt 1974).