Australocosmica nana
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Ordo: Stylommatophora
Familia: Camaenidae
Genus: Australocosmica
Name
Australocosmica nana Criscione, Francesco, 2013 – Wikispecies link – Pensoft Profile
- Australocosmica nana Criscione, Francesco, 2013, Zootaxa 3608: 109-111.
Materials Examined
Holotype. Australia, WA, Kimberley, Bonaparte Archipelago, Albert Island: Sta. KC-043, Bonaparte Archipelago, - 14.519, 124.929 (coll. V. Kessner, A. Longbottom, 14 July 1988) (WAM S 84060). Paratypes. Australia, WA, Kimberley, Bonaparte Archipelago, Albert Island: same data as for holotype, 14 wet (WAM S 83039); 36 dry (WAM S 83038), 35 dry (FMNH 219165).
Etymology
Etymology. In reference to its small shell, derived from “ nanus ” (Latin=dwarf), adjective of feminine gender.
Description
Description. Shell (Figs 3 D; 5 A, B). Small, with short spire and sub-globose shape. Whorls with slightly angulate periphery, moderately shouldered underneath suture. Axial ribs moderately pronounced. Colour horn to light brown. Genitalia (Fig. 6 D). Penis about half as long as anterior part of oviduct (= vagina and free oviduct). Inner penial wall supporting complex sculpture, with series of folds surrounding the opening to vas deferens forming a collar, posteriorly with three corrugated, wide, longitudinal pilasters, anteriorly with numerous, narrow longitudinal pilasters extending into atrium. Vaginal length equivalent to ¾ of penis and free oviduct. Spermoviduct 3.5 times longer than free oviduct and almost twice as long as albumen gland.
Discussion
Remarks: Shell colour as variable as A. crassicostata. Shell smaller, flatter and with fewer whorls than other congeners. Sculpture similar to that of A. rotunda and with fewer but more pronounced axial ribs than other congeners except A. crassicostata. Inner penial wall sculpture similar to that of A. buffonenis and A. pallida but with more developed transverse folds on lateral pads. This is Solem’s (1991) manuscript species ‘NSP 80 ’.
Taxon Treatment
- Criscione, Francesco; Köhler, Frank; 2013: Six new species of Australocosmica Köhler, 2011 from the Kimberley islands, Western Australia (Mollusca: Pulmonata: Camaenidae), Zootaxa 3608: 109-111. doi
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