Posted: Aug 27 2011

 Littoraria tessellata (Philippi, 1847)

Regarding Littoraria tessellata (Philippi, 1847), Abbott (American Seashells 1974) commented that this shell was “A color form [of L. nebulosa (Lamarck, 1822) with] … a checkered brown pattern on a grayish white background.” Since that time Dr. David G. Reid, Department of Zoology, Natural History Museum, London, has done extensive morphological, anatomical and molecular research on Littorininae of the tropical and subtropical western Atlantic and established that Littoraria tessellata (Philippi, 1847) is a distinct species with clear and consistent differences in animal sexual anatomy and shell morphology. However, the shell morphology of L. tessellata and L. nebulosa is very similar and differences are best discernible when the two are compared side by side.

References

Reid, D.G. 1986. The Littorinid Molluscs of Mangrove Forests In the Indo-Pacific Region: the Genus Littoraria. British Museum (Natural History), London. XV + 228pp.

Reid, D.G. 2001. New data on the taxonomy and distribution of the genus Littoraria Griffith and Pidgeon, 1834 (Gastropoda: Littorinidae) in Indo-West Pacific mangrove forests. Nautilus 115: 115-139.

12/8/11 Andy Borgia, Key West – collecting in Keys since 2001, has reported another live-collected L. tessellata in the Keys. On 12/7/11 Andy reported:

"Went to Sandspur Beach, Bahia Honda. Walked along the ironshore looking on the larger boulders. I found an unusual Littorinid I had not previously seen before. When I got home I remembered asking you about the Littoraria tessellata so I pulled up the pic on LTS and its a dead ringer. It was live but the only one. I searched all the boulders at the South end of the beach."

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