Cassidula nucleus ( Gmelin, 1791 )

Zvonareva, Sofya & Kantor, Yuri, 2016, Cheсklist of gastropod molluscs in mangroves of Khanh Hoa province, Vietnam, Zootaxa 4162 (3), pp. 401-437 : 429-430

Cassidula nucleus ( Gmelin, 1791)

Figs 8 S–T

Helix nucleus Gmelin, 1791: 3651 .

Cassidula nucleus: Okutani 2000: 818 –820, pl. 407, fig. 8; Thach 2005: 233, pl. 72, fig. 8; Raven & Vermuelen 2007: 43, 50, pl. 4, figs 35–36, Lozouet & Plaziat 2008: 148 –149, pl. 38, figs 15–16; Poppe 2010: 448, pl. 915, figs 9–11; Zvonareva et al. 2015: 9, fig 3(8).

Material examined. Nha Phu Bay, about 40 specimens.

Abundance. Common.

Measurements. Up to 22 mm ( Raven & Vermuelen 2007).

Ecological notes. On tree trunks and seedlings attached above tide level in mangrove swamp. Also can live in salt marsh or on muddy tidal flats ( Lozouet & Plaziat 2008).

In studied sites it was found on tree trunks and seedlings of mangrove trees as well as on sediment surface between mangrove roots.

Relation to mangroves. Predominantly mangrove-associated.

Distribution in Vietnam. Northern-east coast, central coast, southern delta ( Thach 2005).

General distribution. From Ryukyu (Japan) to tropical IWP ( Lozouet & Plaziat 2008).

Figures

FIGURE 8. A – B. Drupella margariticola (21 mm). C – D. Tenguella musiva (22 mm). E – F. Semiricinula muricoides (22 mm). G – H. Lataxiena blosvillei (44 mm). I – J. Amathinidae gen. sp. (5 mm). K – L. Otopleura sp. (10 mm). M – N. Otopleura auriscati (10 mm). O – P. Syrnola sp. (8 mm). Q – R. Cassidula aurisfelis (25 mm). S – T. Cassidula nucleus (22 mm). U – V. Melampus granifer (6 mm). W – X. Laemodonta siamensis (7 mm). Y – Z. Melampus cf. adamsianus (11 mm).