Rhodopetoma amycus ( Dall, 1919 ), 2025

Kantor, Yuri I., Fedosov, Alexander & Puillandre, Nicolas, 2025, Revision of the Indo-Pacific species of the genus Leucosyrinx Dall, 1889 (Neogastropoda: Conoidea: Pseudomelatomidae), European Journal of Taxonomy 999, pp. 1-126 : 106

Rhodopetoma amycus ( Dall, 1919) comb. nov.

Fig. 34G

Antiplanes amycus Dall, 1919: 36 , pl. 11 fig. 5.

Leucosyrinx kantori McLean, 1995: 81 (replacement name for Antiplanes amycus Dall, 1919 ), invalid.

Type material

Holotype

UNITED STATES OF AMERICA • SL 21.5 mm; California, West of Monterey Bay ; 36.7167° N, 122.2° W; depth 1063 m; USS Albatross , stn 3670; USNM 226163 .

Remarks

Dall (1919) described two species with the epithet amycus – Antiplanes amycus (p. 36, pl. 11 fig. 5) and Leucosyrinx amycus (p. 5, pl. 3 fig. 7). McLean (1995) transferred Antiplanes amycus to Leucosyrinx and proposed a replacement name, Leucosyrinx kantori , to avoid secondary homonymy. Examination of the type specimen of Antiplanes amycus (USNM 226163) revealed that the anal sinus is situated in the lower part of the subsutural ramp and also occupies part of the shoulder, a feature not found in any species of Leucosyrinx . Therefore, this species should be excluded from Leucosyrinx , and according to Article 59.4 of the ICZN, the name Antiplanes amycus Dall, 1919 should be reinstated as valid. Based on conchological characters, we transfer the species to the genus Rhodopetoma Bartsch, 1944 (family Pseudomelatomidae ). Rhodopetoma is very similar to Antiplanes , differing mainly in the presence of variously developed axial folds. The name Leucosyrinx kantori thus becomes invalid. Leucosyrinx amycus Dall, 1919 is considered a junior subjective synonym of Aforia goodei ( Dall, 1890) ( McLean 1971b) .

Distribution

Type locality.

Figures

Fig. 34. A–F. Doubtful species of Leucosyrinx Dall, 1889. A. “Leucosyrinx” caecilia Thiele, 1925, holotype, ZMB Mol 109385, SL 7.5 mm (photo courtesy of Museum für Naturkunde). B. “Leucosyrinx” canyonensis (Dell, 1956), holotype, MNZ, M.009262, SL 9.3 mm (photo from the website of MNZ, https://collections.tepapa.govt.nz/object/151638). C. “Leucosyrinx” erna Thiele, 1925, syntype, ZMB Mol 109384, SL 7.8 mm (photo courtesy of Museum für Naturkunde). D–F. “Leucosyrinx” sansibarica Thiele, 1925. D. Original drawing (Thiele 1925: pl. 24 (36) fig. 1),? ZMB, SL 45 mm. E. Syntype, ZMB Mol 60089, Gulf of Aden, SL 42.6 mm (photo courtesy of Museum für Naturkunde). F. Syntype, ZMB Mol 109387, Gulf of Aden, SL 34.5 mm (= Comispira) (photo courtesy of Museum für Naturkunde). G–H. Types of species excluded from Leucosyrinx and Comitas H.J. Finlay, 1926. G. Rhodopetoma amycus (Dall, 1919) comb. nov., holotype, USNM 226163, SL 21.5 mm (photo courtesy of USNM). H. Burchia clionella (Dall, 1908), syntype, USNM 123125, SL 35.2 mm (photo courtesy of USNM).