Leucosyrinx sp.

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 : 49-50

Leucosyrinx sp. 18

Fig. 11 J-K

Material examined (sequenced)

MADAGASCAR • 1 lv; off Majunga ; 15°22′ S, 45°58′ E; depth 650–850 m; MIRIKY, stn CP3552; MNHN-IM-2009-16911 .

PAPUA NEW GUINEA • 1 lv; New Ireland; 2°48′ S, 150°42′ E; depth 672–1150 m; KAVIENG 2014, stn CP4480; MNHN-IM-2013-58789 .

DNA diagnosis (based on 2 cox 1 sequences)

‘G’ in site 160, ‘C’ in site 226, ‘C’ in site 241, ‘T’ in site 604.

Remarks

The species is represented in our material by two specimens with a very distant occurences – Madagascar and Papua New Guinea. The ASAP analysis suggests conspecifity of the specimens and we thus consider their morphological differences as a result of geographic variation. Due to very limited material we abstain from a formal description of the new species. It resembles both L. herosae sp. nov. and Leucosyrinx sp. 17. From the former it differs in a much smaller shell (SL attaining 24.3 mm vs 47.2 mm) as well as in a much shorter canal. From the latter it differs in its somewhat smaller size and more gradually narrowing of the shell base towards the canal. The specimen from Madagascar also strongly resembles L. derzellei sp. nov. found in close proximity, differing in its somewhat smaller size (22.4 vs 33 mm); they are phylogenetically not closely related.

Distribution

Madagascar, Papua New Guinea, 650– 672 m.

Figures

Fig. 11. A–D. Leucosyrinx sp. 25. A–C. MNHN-IM-2009-13478, Philippines, 1378–1436 m SL 39.8 mm. D. MNHN-IM-2009-13429, Philippines, 593 m, SL 31.6 mm. E–F. Leucosyrinx sp. 10, MNHN-IM-2009-16749, Solomon Is., 396–423 m, SL 41 mm. G–H. Leucosyrinx sp. 21. G. MNHN- IM-2009-13325, Philippines, 953 m, SL 26.4 mm. H. MNHN-IM-2009-13324, Philippines, 1155– 1302 m, SL 27.5 mm. I. Leucosyrinx sp. 20, MNHN-IM-2009-16833, Solomon Is., 1136–1750 m, SL 28.5 mm. J–K. Leucosyrinx sp. 18. J. MNHN-IM-2013-58789, Papua New Guinea, 672–1150 m, SL 24.3 mm. K. MNHN-IM-2009-16911, Madagascar, 650–850 m, SL 22.4 mm. L. Leucosyrinx sp. 14; MNHN IM-2013-48145, Coral Sea, 490–830 m, SL 15.6 mm. A–F = at the same scale; G–L = at the same scale.