Ampullaria stoliczkana Nevill, 1877

Tripathy, Basudev, Sajan, Sheikh & Cowie, Robert H., 2019, Illustrated catalogue of types of Ampullariidae Gray, 1824 (Mollusca, Gastropoda) in the National Zoological Collection of the Zoological Survey of India, with lectotype designations, Zoosystematics and Evolution 96 (1), pp. 1-23 : 1

Ampullaria stoliczkana Nevill, 1877 Figs 11 , 16

Ampullaria stoliczkana Nevill, 1877. Cat. Moll. Ind. Mus. Fasc. E: 11.

Current taxonomic status.

Pila scutata (Mousson, 1848), junior synonym ( Ng et al. 2014).

Type locality.

“Penang” [Malaysia]; Dr F. Stoliczka, leg.

Type material.

Lectotype (here designated): NZSI M.2420. Paralectotypes: NZSI M.25079/5 (registered 14 September 2001, 7 spms [2 full-grown, 5 young]).

Shell dimensions.

Lectotype: SH 54.0 mm, SW 42.1 mm, AH 36.1 mm, AW 28.3 mm, OH 32.1 mm, OW 18.7 mm. Paralectotypes: SH 9.0-53.1 mm, SW 8.0-42.1 mm, AH 7.5-34.1 mm, AW 5.5-23.9 mm, OH 20.4-30.2 mm, OW 10.9-19.4 mm (OH and OW data lacking for the four smallest specimen(s).

Remarks.

Nevill (1877: 11) indicated that the type series contained seven specimens (three full-grown and four young) but in his subsequent catalogue ( Nevill 1885: 7) he noted only six. The original catalogue number for the entire type series was 2420, and in fact it contained eight specimens, a discrepancy noted by Cowie (2015: 49). All but one of these eight specimens have subsequently been removed from this lot and given the catalogue number NZSI M.25079/5, with the remaining specimen (NZSI M.2420) treated as the “holotype” ( “type” on labels; Fig. 16 ) and the other seven as “paratypes”. However, no holotype was designated in the original publication (Code, Art. 73.1). We therefore here designate the shell in NZSI M.2420 as the lectotype (Fig. 11 ) to fix the concept of Ampullaria stoliczkana Nevill, with the seven specimens in NZSI M.25079/5 becoming paralectotypes, of which two are full-grown and five are juveniles, including one that is extremely small. Perhaps this smallest specimen was overlooked by Nevill (1877: 11) in noting three full-grown and four young specimens. The dimensions and appearance of the lectotype correspond closely with the description and dimensions given by Nevill (1877: 11-12).

Figures

Figure 11. Holotype of Ampullaria stoliczkana Nevill, 1885; NZSI M. 2420.

Figure 16. Collection labels. Ampullaria stoliczkana Nevill, 1885; NZSI M. 2420.