Tag Archive for: introduction

The green cellar slug Limacus maculatus (Kaleniczenko, 1851) (Gastropoda, Pulmonata, Limacidae) new for the Netherlands

Authors: W. Langeraert, P.G. van de Haar, C.J.P.J. Margry
Basteria, 85 (1): 6-12Published:

Abstract

This paper presents the first report of the green cellar slug Limacus maculatus (Kaleniczenko, 1851) from the Netherlands. Suspicions were raised after pictures of several specimens were put on the online data platform Waarneming.nl in November 2020 under the name of L. fl avus (Linnaeus, 1758), a similar species already known from the Netherlands. Further investigation of external and internal components revealed that the specimens indeed belong to L. maculatus. This article describes this first discovery of L. maculatus in the Netherlands and provides a thorough discussion of the anatomical characteristics.

Article

Download articleArtikel The green cellar slug <em>Limacus maculatus</em> (Kaleniczenko, 1851) (Gastropoda, Pulmonata, Limacidae) new for the Netherlands

The non-indigenous window shell Theora lubrica Gould, 1861 (Bivalvia: Cardiida: Semelidae) in the delta area of the Netherlands

Authors: M.A. Faasse, H. Gheerardyn, C. Morys, T. van Haaren, T. Ysebaert & R. Nijland
Basteria, 83 (1/3): 52-58Published:

Abstract

The non-indigenous bivalve Theora lubrica has been intro­duced to the southwestern delta area of the Netherlands. For several years, it has been misidentified as Abra nitida, a species with similar appearance. Theora lubrica differs from A. nitida in the presence of an internal ridge (from umbo to anteroventral margin) and a bifid cardinal tooth in the left valve. In native and newly colonised areas the bivalve is particularly a successful competitor at sites with periodical hypoxic conditions. Ecology and invasiveness are discussed.

Article

Download articleArtikel The non-indigenous window shell <em>Theora lubrica</em> Gould, 1861 (Bivalvia: Cardiida: Semelidae) in the delta area of the Netherlands