Coccoglypta arbusticola ( Deshayes, 1870 ) Páll-Gergely & Hunyadi & Chen & Lyu, 2019

Páll-Gergely, Barna, Hunyadi, András, Chen, Zhe-Yu & Lyu, Zhi-Tong, 2019, A review of the genus Coccoglypta Pilsbry, 1895 (Gastropoda: Pulmonata: Camaenidae), Zoosystema 41 (29), pp. 595-608 : 602-604

Coccoglypta arbusticola ( Deshayes, 1870) n. comb.

( Fig. 6A-D )

Helix arbusticola Deshayes, 1870: 20 .

non Bradybaena arbusticola arbusticola – Yen 1939: 135, pl. 14, fig. 2.

non Coccoglypta arbusticola – Chen & Zhang 2004: 155-156, fig. 123.

TYPE MATERIAL EXAMINED. — China. Moupin [Muping Zhen, Sichuan], l’Abbé David , 1869, syntype, MNHN-IM-2000-34192 .

TYPE LOCALITY. — “Principauté de Moupin, Thibet oriental” (from title).

REMARKS

This species has previously been assigned to the genus Bradybaena , however it surely does not belong to that genus in its present concept. The type species of Bradybaena , B. similaris (Rang, 1831) , has a small (c. 1 cm), fragile shell without any distinctive sculpture. However, C. arbusticola n. comb. is larger (shell diameter of syntype: 24.5 mm), and has a thick, finely mamillated shell, reminiscent of those of Coccoglypta .

We have examined the lectotype of Eulota arbusticola chrysomphala Möllendorff, 1899 (see Möllendorff, 1899: 70 and Yen, 1939: 135) in the Senckenberg Museum ( China: W. Sy-tshuan, Fu-bien-ho, SMF 9159, figs 6E-H). It had a light brown, very finely wrinkled and extremely finely spirally grooved shell, without any signs of mamillae. The aperture is also comparatively much larger in chrysomphala than in arbusticola . Thus, “ Bradybaena ” chrysomphala and Coccoglypta arbusticola n. comb. cannot be subspecies of the same species and must be considered as two distinct species.

The single shell in the Senckenberg Museum identified as B. arbusticola and figured by Yen (1939) has a narrower umbilicus and more rapidly growing whorls than the type, and there are also no signs of a mamillated sculpture. Therefore, we here exclude it from the present species. Its true identity remains unknown. Furthermore, the shell figured in Chen & Zhang (2004) also belong to another species, because it has a narrower umbilicus, a dark spiral band, and a more strongly expanded peristome.

Figures

FIG. 6. — Potential members of the genus Coccoglypta Pilsbry,1895:A-D, syntype of Coccoglypta arbusticola (Deshayes,1870) n. comb.(MNHN-IM-2000-34192); E-H, “Bradybaena” chrysomphala (Möllendorff, 1899),SMF 9159 (lectotype); I-L, Coccoglypta cf. leprosula n. comb. (Heude, 1885) from the Guanwushan Forest Farm. Scale bar: 30 mm.