Abstract

During a brief malacological survey, a total of 16 snail species were recorded (four mangrove amphibious, 12 terrestrial). For all the species new localities with GPS coordinates and habitat data are provided. The species Thapsia insulsa Preston, 1910 (Urocyclidae) is a new record to the island.

Highlights

  • Unguja, the main island of the Zanzibar Archipelago, lies about 6° south of the equator and 40 km east of the mainland of Africa and has an area of approximately 1600 km2 (Pakenham, 1984)

  • Most of the island is covered by high and low scrub forest, known as a coral rag forest on ground characterised by numerous outcroppings of fossilised coral (Siex, 2011). This vegetation cover is classified as Eastern African Coastal Scrub Forest according to the Clarke’s scheme (Burgess & Clarke, 2000)

  • The territory of Zanzibar autonomous region (Republic of Tanzania) is one of the best studied in terms of species composition of land snails (Rowson, 2007; Rowson et al, 2010; Gittenberger & Bruggen, 2013) but many species have been reported without exact localities or they are problematic to find considering their names (Rowson, 2007)

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Summary

Introduction

The main island of the Zanzibar Archipelago, lies about 6° south of the equator and 40 km east of the mainland of Africa and has an area of approximately 1600 km2 (Pakenham, 1984). Records of terrestrial and mangrove snails from the Michamwi Peninsula, Unguja (Zanzibar) Island (Tanzania)

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