Acavid Land Snails of Madagascar: Subgeneric Revision Based on Published Data (Gastropoda: Pulmonata: Stylommatophora)

Seller: ConchBooks, Harxheim, GermanyConchBooks

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Item description from seller

Madagascan acavids currently comprise 99 species, for 21 of which some anatomical data have been published. Cladistic analysis was performed on 19 of these species, based on 11 apomorphies (6 of them synapomorphies) found in illustrations of the genitalia and radulae, and in the embryonic sculptures of examined shells. The resulting maximum-parsimony tree (consistency index = 1.00) supported the conchologically defined genera Ampelita, Clavator, Helicophanta, and Leucotaenius. Extreme anatomical variation in Ampelita called for its division into four subgenera that are also conchologically distinct: Ampelita sensu stricto; Eurystyla; Vescona, subgen. n. (type A. robillardi); and Xystera, subgen. n. (type A. xystera). According to the cladogram, A. (Ampelita) is paraphyletic. Anatomically unknown species were tentatively classified based on shell morphology. Ampelita covani is removed to the Rhytididae, and is the first member of that family reported from Madagascar. Because of the Madagascan acavids are in great danger of extinction, immediate action is required to build on the scarce available data and to aid their survival. 17 pp., 6 figs, gr. 8.…

Seller Inventory # W13583

Bibliographic details

Title
Acavid Land Snails of Madagascar: Subgeneric Revision Based on Published Data (Gastropoda: Pulmonata: Stylommatophora)
Author
Emberton, K. C.
Publication year
1990

ConchBooks

Harxheim, Germany

4-star seller

AbeBooks seller since March 1, 2007

Shipping rates from Germany to U.S.A.

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Store description

Founded in 1985 we are specialized in worldwide literature on Mollusca and marine invertebrates. Our publishing house has meanwhile published approximately 60 titles on that field of interest. We have stocks of most available international books on Malacology and a huge amount of antiquarian literature, even of the latter most titles are only available once.

Specialty

Weichtiere / Shells, Schnecken / Snails & Slugs, Muscheln / Bivalves, Tintenfische / Squids / Octopusses / Ammonites, Malacology, Conchology, Marine Biology

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ConchBooks

Germany