Landouria monticola van Benthem Jutting, 1950

Nurinsiyah, Ayu Savitri, Neiber, Marco T. & Hausdorf, Bernhard, 2019, Revision of the land snail genus Landouria Godwin-Austen, 1918 (Gastropoda, Camaenidae) from Java, European Journal of Taxonomy 526, pp. 1-73 : 56-57

publication ID	https://doi.org/ 10.5852/ejt.2019.526
publication LSID	lsid:zoobank.org:pub:3FFC527D-E9CA-4D9F-BF59-076FA60171AC
DOI	https://doi.org/10.5281/zenodo.5587350
persistent identifier	https://treatment.plazi.org/id/03B1DB4C-8B1A-4E21-4FCD-FDF93E78FE41
treatment provided by	Plazi
scientific name	Landouria monticola van Benthem Jutting, 1950
status

Treatment

Landouria monticola van Benthem Jutting, 1950 View in CoL

Figs 10 View Figs 6–11 , 55 View Figs 52–55 , 77 View Figs 76–80 ; Tables 3–4 View Table 3 View Table 4

Landouria monticola van Benthem Jutting, 1950: 469 View in CoL , fig. 85 (“Mt. Tjikorai, 2500–2800 m ”).

Landouria monticola – Zilch 1966: 294 View in CoL .

Diagnosis

Landouria monticola is characterized by a conical, keeled shell with distinct incised spiral lines, but no discernible scales, and a narrow umbilicus.

Material examined

Type material

INDONESIA • 2 paratypes; Java; SMF 8879 View Materials . – West Java • 3 paratypes; Gunung Cikuray ; 7°19′ S, 107°52′ E; 2500 m a.s.l.; SMF 8880 View Materials GoogleMaps • 1 paratype (or holotype?); Gunung Cikuray , summit; 7°19′ S, 107°52′ E; 2800 m a.s.l.; ZMA 407615 View Materials GoogleMaps .

Other material

INDONESIA • 1 spec.; West Java, Gunung Cikuray ; 7°19′ S, 107°52′ E; 2400 m a.s.l.; ZMB 46038 GoogleMaps .

Description

SHELL ( Figs 10 View Figs 6–11 , 77 View Figs 76–80 ; Tables 3–4 View Table 3 View Table 4 ). Conical, with 4.5–5.25 convex whorls; protoconch almost smooth; teleoconch with irregular wrinkles and distinct incised spiral lines; no scales discernible; not tuberculate around umbilicus; yellowish or brownish-corneous; body whorl keeled; aperture oval; upper insertion of peristome hardly descending; peristome slightly expanded, not reflexed and slightly thickened; umbilicus hardly eccentric, narrow, comprising 20–25% of shell diameter, hardly obscured by columellar edge.

GENITALIA. Unknown.

Remarks

Landouria monticola resembles L. schepmani ( Fig. 76 View Figs 76–80 ), in which it was apparently included by Möllendorff (1897). It differs from that species in the smaller (D 8.5–9.5 mm vs 10.5–10.9 mm in L. schepmani ), higher conical (D/H 1.49–1.60 vs 1.72–1.76 in L. schepmani ), less sharply keeled shell.

The holotype of L. monticola could not be traced in the RMNH/ZMA collection. Van Benthem Jutting (1950) reported L. monticola from several regions in West, Central and East Java. We examined a juvenile paratype of L. monticola from Gunung Kawi in East Java (ZMA 137804), which differs from the paratypes from Gunung Cikuray in the smoother shell with a narrower umbilicus. We doubt that this specimen is conspecific with the paratypes of L. monticola from Gunung Cikuray. The identity of the populations from high mountain regions in Central Java with L. monticola must also be checked.

Distribution

Currently only the populations from Gunung Cikuray in West Java are included in L. monticola (Fig. 55). Records from other regions of Java ( van Benthem Jutting 1950) and from Sumatra ( Heryanto 2013) probably refer to other species.