Amphidoxa lavinia Hutton, 1883

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 : 57-59

Amphidoxa lavinia Hutton, 1883

Pl. 7, fig. B

Hutton, 1883. The New Zealand Journal of Science, 1: 476.

Type material. Syntypes (2), NMNZ M.1754 (dry shells). Label details. ‘ Palmerston North, T.W. Kirk’ .

Type locality. Stated by Hutton (1883g: 476, 1884b: 180) to be ‘Palmerston North’, but this is incorrect (see below).

Remarks. Type material of Amphidoxa lavinia is illustrated here for the first time in pl. 7 fig. B. Hutton submitted a description of this species to the Transactions and Proceedings of the New Zealand Institute issue for 1883, but publication was delayed until May 1884 ( Hutton 1884b: 180), and was pre-empted by a brief description in an account of a meeting of the Philosophical Institute of Canterbury ( Hutton 1883g: 476). These descriptions were based on specimens that T.W. Kirk sent to Hutton, and which putatively had been collected at Palmerston North, north of Wellington. However, there have been no other records of this species from New Zealand, and the locality details given by Kirk were undoubtedly incorrect. Suter (1913: 683) considered that Amphidoxa lavinia Hutton, 1883 was a junior synonym of Helix capillacea Férussac, 1832 , from Australia, as did Iredale (1938: 119). Smith (1992: 299) stated that A. lavinia was “not known to occur in Australia ”, but this was probably based on a misinterpretation of Iredale’s synonymy. Re-examination of type material indicates that Amphidoxa lavinia Hutton, 1883 is actually a synonym of Helix sinclairi Pfeiffer, 1846 . The latter taxon was described from one or more specimens collected by Dr. Andrew Sinclair in ‘Van Diemensland’ (= Tasmania, Australia). The lectotype (NHMUK 1842.11.2.23), fixed by inference of holotype (ICZN Article. 74.6) by Smith (1992: 304), is illustrated here for the first time in pl. 7, fig. C. Helix sinclairii is the type species of the genus Tasmaphena Iredale, 1933 , in the family Rhytididae , by original designation. It is endemic to mid-northern, central and southern Tasmania ( Smith & Kershaw 1981: 69, map 36; Stanisic et al. 2018: 98).

Taxonomy. Treated here as a subjective junior synonym of Tasmaphena sinclairii (Pfeiffer, 1846) N. syn.