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5 Folia Malacologica

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Morphological variation in terrestrial slug Deroceras turcicum (Simroth, 1894) and a northern extension of its range in Central Europe

100%

Reise H. , Hutchinson J. M. C.

Folia Malacologica

2001

tom 09

nr 2

We report seven new localities of the terrestrial slug Deroceras turcicum (Simroth), including the first occurrences in the Czech Republic and Slovakia. These demonstrate that the distribution of D. turcicum extends much further north than known previously and it might even be rather common there. We discuss possible reasons for its belated discovery. D. turcicum might have often been confused not only with the common D. reticulatum (O.F. Müll.) but also with the syntopical D. rodnae Grossu et Lupu and D. praecox Wiktor. We describe its variability in size, coloration, genital morphology, and caecum length, and consider characters for its reliable discrimination from other species. Two colour morphs (white and violet) are described for the first time. Intriguingly, the coloration of D. turcicum often matches that of congeners found at the same site, which suggests that colour has some selective value. Since external appearance often gives no reason to suspect that two species co-occur at a site, dissection of several specimens is advisable.

An invasion from Germany: Deroceras invadens (Pulmonata: Agriolimacidae) and other synanthropic slugs in the southwest corner of Poland

100%

Hutchinson J. M. C. , Reise H.

2015

tom 23

nr 4

First records of the terrestrial slug deroceras turcicum (Simroth, 1894) in Poland

80%

Reise H. , Hutchinson J. M. C. , Forsyth R. G. , Forsyth T. J.

Folia Malacologica

2005

tom 13

nr 4

Deroceras turcicum (Simroth) is reported from six woodland sites aroundWa³brzych in southwest Poland. This extension of the species’ range to Poland was expected given the number of reports from adjacent areas of the Czech Republic. We collate these reports as well as local records of Deroceras praecox Wiktor, which is found in similar habitats. We briefly discuss the difficulty of distinguishing D. turcicum from Deroceras reticulatum (O. F. Müll.), with which it may also co-occur.

Genital morphology differentiates three subspecies of the terrestrial slug Arion ater (Linnæus, 1758) s.l. and reveals a continuum of intermediates with the invasive A. vulgaris Moquin-Tandon, 1855

80%

Reise K. , Schwarzer A. K. , Hutchinson J. M. C. , Schlitt B.

Folia Malacologica

2020

tom 28

nr 1

First records of the terrestrial slug Arion ater s. l. (Linnaeus, 1758) (Pulmonata: Arionidae) from Turkey

61%

Reise H. , Arslangundogdu Z. , Schlitt B. , Hutchinson J. M. C. , Hizal E. , Bacak E.

Folia Malacologica

2018

tom 26

nr 4