Clypeomorus pellucida Hombron & Jacquinot 1852

Clypeomorus pellucida (Hombron & Jacquinot, 1852)

Figs 4 E–F

Cerithium pellucidum Hombron & Jacquinot, 1852: pl. 23, figs 24–25.

Clypeomorus pellucida: Houbrick 1985: 63 –69, figs 28–31 (full synonymy); Okutani 2000: 120 –121, pl. 60, fig. 31; Lozouet & Plaziat 2008: 108 –109, pl. 18, figs 4–5; Poppe 2008a: 292 –293, pl. 91 fig. 6; Zvonareva et al. 2015: 8.

Material examined. Nha Phu Bay, Dam Bay, mangrove plantation and natural mangroves, over 50 specimens.

Abundance. Common.

Measurements. Up to 30 mm (Houbrick 1985).

Ecological notes. Spawn and larvae unknown, mode of development unknown (Houbrick 1985).

Presumably grazes on microalgae associated with mangrove aerial roots. According to Houbrick (1985) “The stomach of preserved specimens is filled with filamentous green algae and detritus, ovate fecal pellets are comprised of sand grains and detrital particles”.

True mangal component (generally climbing on pneumatophores and roots of mangroves), has been also collected on the mud bank adjacent to the river mouth estuary in Philippines (Lozouet & Plaziat 2008).

In studied sites clusters of this species were found on the aerial roots in planted mangroves and natural mangroves and occasionally on the mud surface under the roots during low tide.

Relation to mangroves. Predominantly mangrove-associated.

Distribution in Vietnam. Central coast.

General distribution. Andaman Is to New Caledonia (Lozouet & Plaziat 2008). Okinawa Is and southwards to west edge of tropical West Pacific (Okutani 2000).