Australocosmica rotunda, Criscione, Francesco & Köhler, Frank, 2013

Criscione, Francesco & Köhler, Frank, 2013, Six new species of Australocosmica Köhler, 2011 from the Kimberley islands, Western Australia (Mollusca: Pulmonata: Camaenidae), Zootaxa 3608 (2), pp. 101-115 : 112

Australocosmica rotunda n. sp.

Figs 3 F, 5E–F, 7B

Holotype. Australia, WA, Kimberley: Un-named island near the mouth of Sale River, Doubtful Bay, SW Kimberley, -15.959, 124.596 (coll. V. Kessner, R. Teale, 11 February 2010) (WAM S84061 ). Paratypes. Australia, WA, Kimberley: same data as for holotype, 23 wet (WAM S49237 ), 7 dry (WAM S49302 ); Sale River, ca. 5 Km E of Doubtful Bay, SW Kimberley, -15.988, 124.643 (coll. V. Kessner, R. Teale, 12 February 2010), 3 dry (WAM S 49303 ).

Etymology. In reference to the rounded shape of shell, derived from “ rotundus ” (Latin=rounded), adjective of feminine gender.

Description. Shell ( Figs 3 F; 5E, F). Large, with moderately short spire and globose shape. Whorls with wellrounded periphery, weakly shouldered underneath suture. Axial ribs moderately pronounced. Colour light brown to brown. Genitalia ( Fig. 7 B): Penis more than half as long as anterior part of oviduct (= vagina and free oviduct). Inner penial wall supporting irregular posterior folds and anteriorly three, wide longitudinal pilasters extending into atrium. Vagina almost as long as penis and about 1.5 times longer than free oviduct. Spermoviduct about 3.5 times longer than free oviduct and more than 1.5 times longer than albumen gland.

Remarks. Shell colour darker than in other congeners, often as dark A. augustae . On average shell larger than other congeners, but slightly smaller than A. augustae ; more elevated than other congeners except A. augustae and A. pallida ; with more whorls than A. augustae , A. bernoulliensis and A. pallida . Sculpture similar to A. nana , with fewer and more pronounced axial ribs than other congeners except A. crassicostata . Inner penial wall similar to that of A. crassicostata with more differentiated posterior longitudinal pilasters. This is Solem’s (1991) manuscript species ‘NSP 40’.

Figures

FIGURE 3. Shells of Australocosmica species. A. A. bernoulliensis n. sp. (paratype FMNH 219104). B. A. buffonensis n. sp. (paratype WAM S 83007). C. A. crassicostata n. sp. (paratype FMNH 219181) D. A. nana n. sp. (paratype WAM S 83039). E. A. pallida n. sp. (paratype WAM S 83006). F. A. rotunda n. sp. (paratype WAM S 49237). Scale bar = 10 mm.

FIGURE 7. Penial anatomy of Australocosmica species. A. A. pallida n. sp. (holotype WAM S 84056). B. A. rotunda n. sp. (holotype WAM S 84061). Scale bar = 2 mm.