Metalycaeus caroli (Semper, 1862)

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

Metalycaeus caroli (Semper, 1862)

Alycaeus caroli Semper, 1862: 148-149.

Alycaeus (Chamalycaeus) caroli - Kobelt 1902: 353-354.

Chamalycaeus (Chamalycaeus) caroli - Zilch 1957: 142, pl. 5, fig. 4.

Metalycaeus caroli - Páll-Gergely and Auffenberg 2019: 384, fig. 7A, B.

Type locality.

"ad Digallorin vicum insulæ Luzon".

Material examined.

Philippines (N-Luzon), 'ad Digallorin vicum insulæ Luzon’ (Digollorin Bay: 16°50'N, 122°26'E), coll. C. Semper, 18 August 1860, SMF 158415 (2 syntypes); Luzon, Philippines, V W. MacAndrew Collection, Acc. no. 1563, NHMUK 20150120 (2 shells).

Remarks.

Protoconch elevated, spirally striated; R1 with irregular ribs and spiral striae of ca. the same strength, or slightly even stronger than the ribs; R2 relatively short, with alternating darker/wider and slimmer/lighter stripes; its surface is nearly smooth.