Saturday, April 19, 2014

[Mollusca • 2014] Revision of the Carnivorous Snail genus Indoartemon Forcart, 1946 and a new genus Carinartemis from Thailand (Pulmonata: Streptaxidae)


Fig. 2. Living snails of:
B, Carinartemis vesperus, new species, paratype CUMZ 6201 (shell width about 10 mm);
C, Carinartemis striatus, new species, paratype CUMZ 6205 (shell width about 12 mm).


Abstract

Carnivorous land snails attributed to the genera Indoartemon Forcart, 1946 and Carinartemis, new genus, are recorded from Thailand for the first time. Indoartemon eburneus (Pfeiffer, 1861), I. prestoni (Gude, 1903) and I. medius, new species, were collected from central and northeastern Thailand. These two genera are easily distinguished: Carinartemis, new genus, possesses a distinctive sharp and wide peripheral keel that does not occur in Indoartemon. We provide the first description of the internal anatomy of Indoartemon and Carinartemis, new genus, and establish the presence of several distinctive characters. The new genus has two new distinctive species, Carinartemis vesperus, new species, and Carinartemis striatus, new species, from isolated limestone hills in western Thailand.
Key words. systematics, biodiversity, genitalia, predator, Streptaxidae, Thailand

Fig. 2. Living snails of: A, Indoartemon medius, new species, paratype CUMZ 5017 (shell width about 8 mm); B, Carinartemis vesperus, new species, paratype CUMZ 6201 (shell width about 10 mm); C, Carinartemis striatus, new species, paratype CUMZ 6205 (shell width about 12 mm).

Fig. 1. Distribution map of Indoartemon spp. and Carinartemis spp.
Indoartemon spp (white circle): (1) Indoartemon cingalensis (Benson, 1853); (2) Indoartemon layardianus (Benson, 1853); (3) Indoartemon glacilis (Collett, 1898); (4) Indoartemon eburneus (Pfeiffer, 1861); (5) Indoartemon fuchsianus (Gredler, 1881); (6) Indoartemon bidens (Möllendorff, 1883); (7) Indoartemon tridens (Möllendorff, 1898); (8) Indoartemon laevis (Blanford, 1899); (9) Indoartemon prestoni (Gude, 1903); and (10) Indoartemon medius, new species.
Carinartemis spp. (black circle): (1) Carinartemis vesperus, new species; and (2) Carinartemis striatus, new species. 



Thanit Siriboon, Chirasak Sutcharit, Fred Naggs, Ben Rowson & Somsak Panha. 2014. Revision of the carnivorous snail genus Indoartemon Forcart, 1946 and a new genus Carinartemis from Thailand (Pulmonata: Streptaxidae). RAFFLES BULLETIN OF ZOOLOGY. 62: 161–174 

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