Trichochloritis (?) pseudomiara (Bavay & Dautzenberg, 1909)

Pall-Gergely, Barna & Neubert, Eike, 2019, New insights in Trichochloritis Pilsbry, 1891 and its relatives (Gastropoda, Pulmonata, Camaenidae), ZooKeys 865, pp. 137-154 : 144

Trichochloritis (?) pseudomiara (Bavay & Dautzenberg, 1909) Fig. 12

Helix (Chloritis) pseudomiara Bavay & Dautzenberg, 1909a: 236; Bavay & Dautzenberg 1909b: 181, pl. VI, figs 5-8.

Trachia pseudomiara : Schileyko 2011: 45.

Type specimens examined.

syntype MNHN-IM-2000-31774, Nat Son, leg. Messager, D: 24.3 mm, H: 13.3 mm.

Other specimens examined.

Muong-Hum, RBINS/1; Muong-Hum, leg. Messager 1908, RBINS/1; Tonkin, Phong-Tho, RBINS/1 (mixed sample with Trichochloritis sp.); Nat-Son, RBINS/3 (mixed sample with Trichochloritis sp.); Tonkin, leg. Messager, RBINS/22 (some of them are juveniles); Tonkin, Phong-Tho, NHMUK 1909.7.9.57/1 (photographed for the North Vietnamese Land Snail Guide); Tonkin, Muong-Hum, MNHN-IM-2012-27105/2; Vietnam, Cam Duong, MNHN-IM-2012-27106/2 (probably erroneous locality?); Tonkin, Phong-Tho, MNHN-IM-2012-27107/2; Tonkin, Muong-Hum, MNHN-IM-2012-27108/2; Tonkin, Muong-Hum, leg. Messager, MNHN-IM-2012-27109/2; Tonkin, MNHN-IM-2012-27110/1; Haut Tonkin, MNHN-IM-2012-27111/1.

Type locality.

Vietnam, N Vietnam: Nat Son.

Diagnosis.

A rather large, usually dark species with rounded body whorl, fine radial growth lines and deep hair scars; umbilicus open, only a small part of it is covered by the columellar reflection.

Description.

Shell rather large, almost flat, with relatively thick wall; body whorl rounded; last half whorl with or without very shallow subsutural furrow; the 4.75-5.25 whorls are separated by a shallow suture; colour greyish yellowish, or brown to olive green; protoconch consists of 1.5 whorls, finely granulate, with fine radial lines near the suture of the last half whorl; teleoconch finely, irregularly wrinkled, and covered with very deep hair scars, which are visible to the naked eye as well on the body whorl; hairs not permanent, although we did not have access to live collected specimens; aperture ovoid; peristome expanded and slightly reflected, and reinforced by a thickened whitish/light brown lip; parietal region with an inconspicuous layer, which is often darker than the rest of the shell; umbilicus widely open, concave and funnel-shaped, slightly covered by reflected peristome.

Measurements.

D = 21.3 -26.0 mm, H = 11.8-14.4 mm (n = 3).

Distribution.

This species is known only from the northernmost part of Vietnam, along the Chinese border.

Remarks.

This species can easily be identified based on the dark green-coloured shell and the deep, widely spaced hair scars that cover the entire teleoconch.

Figures

Figures 10 - 12. Shells of Trichochloritis species 10 Trichochloritis breviseta, BOR / MOL 9091, Perak, Ipoh, Gunung Kanthan plot, D = 19.5 mm 11 Trichochloritis penangensis, BOR / MOL 11562, Perak, Ipoh, Gunung Pondok, plot, D = 16.2 mm 12 Trichochloritis (?) pseudomiara, syntype of Helix (Chloritis) pseudomiara Bavay & Dautzenberg, 1909, D = 24.3 mm, MNHN. 10, 11 Junn Kitt Foon (published in Foon et al. 2017), all photographs x 2.