Chamalycaeus sumatranus (E. von Martens, 1900)

Pall-Gergely, Barna, Sajan, Sheikh, Tripathy, Basudev, Meng, Kaibaryer, Asami, Takahiro & Ablett, Jonathan D., 2020, Genus-level revision of the Alycaeidae (Gastropoda, Cyclophoroidea), with an annotated species catalogue, ZooKeys 981, pp. 1-220 : 1

Chamalycaeus sumatranus (E. von Martens, 1900) Fig. 12A

Alycaeus (Orthalycaeus) sumatranus E. von Martens, 1900: 6-7.

Alycaeus (Alycaeus) sumatranus - Kobelt 1902: 351.

Alycaeus sumatranus - van Benthem Jutting 1959: 77-78, fig. 5.

Type locality.

“Unter-Lankat”.

Material examined.

Unter-Lankat, coll. Schneider, ZMB/MOLL 51748 (1 syntype, labelled as holotype; photographs examined).

Remarks.

The original description does not mention the number of examined specimens. Thus, we consider the specimen labelled holotype (ZMB/MOLL, 51748) as a syntype.

Protoconch elevated, no spiral striation visible; R1 with rather irregular, low ribs and spiral striation roughly of the same strength; R2 long, with widely spaced, sharp ribs.

Figures

Figure 12. Shells of Chamalycaeus Moellendorff, 1897 species A Chamalycaeus sumatranus (Martens, 1900), syntype (ZMB / MOLL 51748) B Chamalycaeus troglodytes (Rensch, 1934), syntype (ZMB / MOLL 76101). Photographs: Christine Zorn.