Satsuma viridibasis Wu & Hwang & Lin 2008, SP. NOV.
Creators: name: Wu, Shu-Ping
name: Hwang, Chung-Chi
name: Lin, Yao-Sung
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Stylommatophora
Camaenidae
Satsuma
Satsuma viridibasis

description: SATSUMA VIRIDIBASIS SP. NOV. (FIGS 35, 36)    Satsuma albida (H. Adams). Chang et al., 1996: 25–30, fig. 2 (genitalia) [non albida]   
 Material examined   
 Type specimen: Holotype: TMMT 0613 (from type locality, dry shell, tissue in alcohol). Total five paratypes: four paratypes from type locality: TMMT 0663 (dry shell, tissue in alcohol, dissected); BMNH 20060756, ANSP 413676, SMF 329385 (dry shell). One paratype from Yangmingshan, Taipei: TMMT 0675 (dry shell, tissue in alcohol, dissected).   
 Type locality   
Sikanshui, Xindian, Taipei County, northern Taiwan (Fig. 1, Table 1).  
 Diagnosis   
Shell and soft body yellowish without pedal stripe; colour of base greenish; pre-apertural constriction present behind outer lip; number of whorls more than six; bursa stalk shorter than spermoviduct; principal pilaster short; proximal penis short, apparently expanded.  
 Etymology   
 L. viridis: green; L. basis: base, referring to the green body whorl.   
 Description   
 Shell (Fig. 35): Dextral, conical, thin, medium sized. Apex obtuse. Whorls inflated. Periphery bluntly angulated, arc-like. Base inflated. Pre-apertural constriction behind outer lip only. Periostracum thin. Shell colour light yellow above periphery, light yellowish green to cyan below periphery. Surface smooth, with fine axial and spiral striae. Aperture subvertical, ovate. Junction between outer lip and inferior lip curved. Peristome thin, expanded at inferior lip and outer lip. Columellar lip vertical, reflected. Umbilicus mostly covered by columellar lip, crevice-like.   
 Band or stain: Band or stain is not present. Band formula = 0 0 0 0 0 0 0 0.   
 Reproductive system (Fig. 36): The reproductive system is similar to that of S. vallis with following exceptions: (1) the flagellum is shorter than that of S. vallis, (2) the epiphallus is short and has three pilasters inside, and (3) spinules are present. Three individuals from the type locality were dissected.   
 Distribution   
The species was found in lowland (<500 m) forest around the Taipei basin, northern Taiwan (Wulai, Sikanshui, Pinglin, Mt Yangmingshan and Mt. Xiangshan) although not in the western part of the basin (Fig. 1, Table 1).  
 Remarks   
Found from 2 m to the canopy. Adult individuals were found in summer (Fig. 35E).  
 The present species is morphologically similar to S. vallis but with larger shell dimensions, greenish shell base, more diagonal aperture, more expanded base, presence of genital spinules and short epiphallus. The specimens dissected and figured by Chang et al. (1996: fig. 2) are actually this present species (see remarks in S. albida). The species is similar to S. luteolella in shell dimensions, but S. viridibasis differs in having greenish shell base, pre-apertural constriction, shorter bursa stalk, short principal pilaster and more expanded proximal penis.
description: Published as part of Wu, Shu-Ping, Hwang, Chung-Chi & Lin, Yao-Sung, 2008, Systematic revision of the arboreal snail Satsuma albida species complex (Mollusca: Camaenidae) with descriptions of 14 new species from Taiwan, pp. 437-493 in Zoological Journal of the Linnean Society 154 (3) on pages 482-484, DOI: 10.1111/j.1096-3642.2008.00415.x, http://zenodo.org/record/5446700