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Tropical leatherleaf

Laevicaulis alte


Laevicaulis alte is a round, dark-coloured slug with no shell, 7 or 8 cm long. Its skin is slightly tuberculated. The central keel is beige in colour. This slug has a unique, very narrow foot; juvenile specimens have a foot 1 mm wide and adult specimens have a foot that is only 4 or 5 mm wide. The tentacles are small, 2 or 3 mm long, and they are only rarely extended beyond the edge of the mantle.


This species lives in dry areas, mostly at lower altitudes.


It is a species of tropical land slug, a terrestrial pulmonate gastropod mollusk in the family Veronicellidae, the leatherleaf slugs. This slug is an intermediate host for Angiostrongylus cantonensis, the rat lungworm, a round worm, the most common cause of eosinophilic meningoencephalitis. This slug is eaten by the frog Rana tigrina.

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Roy Arun
Spotted by
Roy Arun

Asansol, West Bengal, India

Spotted on Oct 10, 2014
Submitted on Mar 16, 2019

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