Over het voorkomen van Boettgerilla Pallens Simroth en Deroceras Panormitanum (Lessona & Pollonera) in Nederland

The distribution of the slugs Boettgerilla pallens Simroth and Deroceras panormitanum (Lessona & Pollonera) in the Netherlands is given. Both species have established themselves relatively recently, and are apparently spreading. Boettgerilla pallens is recorded for the first time outside the province of Limburg in het province of Utrecht. Deroceras panormitanum is considered a common species by the author, despite the limited number of records.