Neptunea 16(2)

NP 16(2)

Acesta gabrieli sp. nov. versus Acesta celebensis (P. Bartsch, 1913) (Mollusca: Bivalvia: Limidae), pp 1-4, 1 map, pls I-11, by Frank Nolf

Abstract: Pictures by Prashad (1932) of Acesta celebensis (P. Bartsch, 1913) have created a lot of confusion in the last century. A better photograph of the juvenile A. celebensis specimen from Bartsch was given by Marshall (2001), together with another enigmatic juvenile specimen from ZMA, labelled as Acesta sp. aff. celebensis and called Acesta sp.1 by Huber (2015). Similar juvenile shells and two adult specimens have been found at the MNHN. They are described as A. gabrieli sp. nov. in the present paper.

Keywords: Mollusca, Bivalvia, LIMIDAE, Acesta gabrieli, Acesta celebensis, W Pacific.

A critical assessment of the genus Acesta (Mollusca: Bivalvia: Limidae) in the Indo-West Pacific Ocean, with the description of Acesta lemuriensis sp. nov., pp 12-23, 1 text fig., pls I-40, by Frank Nolf and Steve Hubrecht

Abstract: The genus Acesta (LIMIDAE) is still not very well understood. The present paper is an attempt to clarify the identity of some doubtful species of Acesta and to offer fine illustrative images and a key to make identification easier. Some names are degraded to the status of junior synonym (Lima butonensis Bartsch, 1913; Acesta kronenbergi Thach, 2015; Lima bartschi Thiele, 1918; Lima smithi Bartsch, 1913 non Sowerby III, 1888; Lima hughi Bartsch, 1923; Lima crocea Pelseneer, 1911; Lima dalli Bartsch). On the other hand, we describe a new species Acesta (Plicacesta) lemuriensis from the Seychelles area (Indian Ocean).

Keywords: Mollusca, Bivalvia, LIMIDAE, Acesta, W and S Pacific, Indian Ocean, new species.