Trichochloritis breviseta (L. Pfeiffer, 1862)

Pall-Gergely, Barna & Neubert, Eike, 2019, New insights in Trichochloritis Pilsbry, 1891 and its relatives (Gastropoda, Pulmonata, Camaenidae), ZooKeys 865, pp. 137-154 : 141-143

Trichochloritis breviseta (L. Pfeiffer, 1862) Figs 5-7 , 9 , 10

Helix breviseta L. Pfeiffer, 1862: 41-42, pl. 5, figs 4-5.

Helix (Trachia) malayana Möllendorff, 1887: 303.

Chloritis malayana Möllendorff, 1891: 335, pl. 30, figs 6-6a.

Helix (Trachia) malayana : Collinge 1903: 210, pl. 12, fig. 17.

Chloritis (Trichochloritis) malayana : Pilsbry 1893: 274, pl. 51, figs 34, 35.

Chloritis breviseta (and Chloritis malayana , which is considered a synonym): Maassen 2001: 120.

Trichochloritis breviseta : Schileyko 2011: 47.

Chloritis breviseta : Foon et al. 2017: 56, fig. 21C.

Type specimens examined.

breviseta : syntype MNHN-IM-2000-1847, Siam, D: 22.1 mm, H: 12.9 mm; malayana : syntypes (2 shells) NHMUK 1891.3.17.3-4, Perak, leg. Hungerford.

Additional specimens.

Perak, leg. Hungerford, NHMUK 1891.3.17.3-4 (2 shells of " malayana "); Larut, Malay Peninsula, NHMUK 1897.3.15.7 (1 shell of " malayana "); Malakka, Kelantan, Hochland v. Perak, coll. O. Möllendorff ex coll. H. Rolle ex coll. Waterstraat, SMF 8538/1 (" malayana ").

Type locality.

“Siam” ( breviseta ); “Perak” [Perak state, Malaysia] ( malayana ).

Diagnosis.

Shell depressed, unicoloured, yellowish, with permanent hairs; umbilicus funnel-shaped with a blunt peripheral angulation.

Description.

Spire only slightly elevated, shell depressed, shell thin; last whorl bluntly angled, a subsutural furrow is present but insignificant; colour yellowish, spiral band missing; the 4.5 whorls separated by a rather shallow suture; protoconch consists of slightly more than 1.5 whorls, squamous, bears minute wrinkled hair scars; tel eoconch completely covered by a moderately dense pattern of hairs; bristles stiffy and durable and stick to the shell (their apical part breaks off, but a dark brown conical bristle cone is left making the surface of the shell quite rough); aperture subrectangular with only slightly oblique columella; peristome reflected and covered by a white lip; parietal region with very slight whitish, blunt lime layer, inconspicuous; columellar reflection small; umbilicus wide and funnel-shaped with a blunt peripheral keel.

Measurements.

D = 22.9-24.1 mm; H = 12.9-14.7 mm (n = 4).

Distribution.

Malaysia and Thailand

Figures

Figures 5 - 7. Trichochloritis breviseta 5 syntype Helix breviseta L. Pfeiffer, 1862, MNHN-IM- 2000 - 1847, D = 22.1 mm, MNHN 6 syntype Helix (Trachia) malayana Moellendorff, 1887, NHMUK 1891.3.17.3, D = 22.2 mm, NHMUK 7 SMF 8538 ex coll. Moellendorff, D = 20.6 mm, S. Hof, Senckenberg. All photographs x 2.

Figures 8 - 9. Morphology of the genital organs of Trichochloritis species 8 Trichochloritis penangensis (Stoliczka, 1873) (redrawn from Stoliczka 1873) 9 Trichochloritis breviseta (L. Pfeiffer, 1862) (redrawn from Collinge 1903). Not to scale.

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.