Landouria parahyangensis sp. nov.

urn:lsid:zoobank.org:act: 41EEB2F2-7781-4D19-9F62-34316F374749

Figs 48, 54; Tables 3–4

Diagnosis

Landouria parahyangensis sp. nov. is characterized by a sharply keeled, tightly coiled conical shell with a very wide umbilicus.

Etymology

Landouria parahyangensis sp. nov. is named after its occurrence in the mountainous region Parahyangan. In the Sundanese language, the name ʻParahyanganʼ means ʻthe abode of hyangs (gods)ʼ, which were supposed to reside in the mountain tops.

Material examined

Holotype

INDONESIA • holotype; West Java, Karangnunggal, surroundings of Pasir Taraje Cave, agroforestry; 7°39′58″ S, 108°07′01″ E; 243 m a.s.l.; 4 Jul. 2014; A.S. Nurinsiyah and T. Setiadi leg.; D = 15.0 mm, H = 8.4 mm; MZB 20429.

Paratypes

INDONESIA – West Java • 3 spec.; Karangnunggal, surroundings of Kiara Jenggot Cave, agroforestry; 7°39′37″ S, 108°06′55″ E; 234 m a.s.l.; MZB 20431 • 10 spec.; Karangnunggal, near Sela Dower Cave, agroforestry and bamboo; 7°40′00″ S, 108°07′00″ E; 237 m a.s.l.; MZB 20428 • 5 spec.; same data as for preceding; ZMH 148186 • 3 spec.; same data as for holotype; MZB 20430 • 3 spec.; same data as for holotype; ZMH 148187 • 1 spec.; Karangnunggal, surroundings of Liang Cai, agroforestry and shrubs; 7°40′01″ S, 108°07′03″ E; 237 m a.s.l.; ZMH 148185 • 1 spec.; Tasikmalaya, Karangnunggal, mouth of Bojong Cave, agroforestry; 7°40′12″ S, 108°07′12″ E; 240 m a.s.l.; MZB 20427.

Description

SHELL (Fig. 48; Tables 3–4). Conical, with 6.5–7 hardly convex whorls; protoconch almost smooth; teleoconch with fine, irregular wrinkles; without distinct incised spiral lines; scaly processes sparse, only at periphery; tuberculate around umbilicus; brownish-corneous; body whorl sharply keeled; aperture rounded rhombic; upper insertion of peristome slightly descending; peristome expanded, reflexed and slightly thickened; umbilicus hardly eccentric, wide, comprising 39–45% of shell diameter, hardly obscured by columellar edge.

GENITALIA. Unknown.

Remarks

Landouria parahyangensis sp. nov. resembles L. epiplatia (Figs 26–28) with regard to the wide umbilicus. It differs from L. epiplatia in the less sharply keeled, higher, conical shell (H 8.4–9.3 mm vs 5.7–6.9 mm in L. epiplatia; D/H 1.69–1.94 vs 2.03–2.94 in L. epiplatia) with more whorls (6.5–7 vs 5.25–6.25 in L. epiplatia). Landouria parahyangensis sp. nov. also resembles L. naggsi sp. nov. (Fig. 25). For differences, see remarks under that species.

Distribution

Landouria parahyangensis sp. nov. is endemic to the Karangnunggal karst area in West Java (Fig. 54).