Limnaea (Amphipeplea) arguta Hutton, 1884

Brook, Fred J., Kennedy, Martyn, King, Tania M., Ridden, Johnathon, Shaw, Matthew D. & Spencer, Hamish G., 2020, Catalogue of New Zealand land, freshwater and estuarine molluscan taxa named by Frederick Wollaston Hutton between 1879 and 1904, Zootaxa 4865 (1), pp. 1-73 : 16

Limnaea (Amphipeplea) arguta Hutton, 1884

Pl. 1, fig. I

Hutton, 1884 . New Zealand Journal of Science, 2: 175.

Type material. Syntypes, CMNZ M322 (1) and CMNZ M6050 (10) (dry shells). The molluscan collection at CMNZ also has a jaw and radulae mounted on glass slides with the label details ‘ Limnaea arguta, Christchurch, XVII p. 54’, in Hutton’s handwriting (i.e., CMNZ 2017.17.152 & 2017.17.154), which are probably primary type material (see description of radula by Hutton 1885c: 54 ).

Label details. CMNZ M322—‘23. Limnaea arguta Hutton, R. Avon , Christchurch’, pillbox label in Hutton’s handwriting.

Type locality. ‘Christchurch’ ( Hutton 1884h: 175 ); ‘River Avon, Christchurch’ ( Hutton 1885c: 54 ).

Previous illustrations of type material. Hutton (1885c: pl. 12, figs. 1, 10—shell, soft parts and radula), Dell (1956: figs. 22, 26, 32).

Remarks. Hutton submitted a description of this species to the Transactions and Proceedings of the New Zealand Institute issue for 1884, but publication was delayed until May 1885 ( Hutton 1885c: 54 ), and was preempted by a brief description in an account of a meeting of the Philosophical Institute of Canterbury ( Hutton 1884h: 175 ). Treated as a junior synonym of the Australian species Limnaea lessoni Deshayes, 1831 by Hubendick (1951: 180), but according to Dell (1956: 76), Limnaea arguta Hutton is conspecific with Succinea tomentosa Pfeiffer, 1855 . As noted in the preceding species entry, the latter taxon has a wide distribution in the North Island and South Island and is probably endemic to New Zealand.

Current taxonomy. A junior synonym of Austropeplea tomentosa ( Pfeiffer, 1855) — Dell (1956: 76 —in Simlimnea Iredale, 1943 ).