Leucosyrinx sp. 1

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 : 59-60

Leucosyrinx sp. 1

Figs 15I , 19M

Material examined (sequenced)

NEW CALEDONIA • 1 lv; SE of Ile des Pins ; 23°05′ S, 167°44′ E; depth 700–740 m; KANACONO, stn DW4748; MNHN-IM-2013-66109 .

Description

RADULA ( Fig. 15I ). Comprising about 25 rows of teeth, 8 nascent. Marginal teeth duplex, ~330 µm in length (3.9%AL without canal). Major limb narrow lanceolate in dorsal view, strongly curved.Accessory limb constitutes slightly over half of tooth width, ~0.75 of total tooth length, inserted into distinct deep socket on dorsal side of major limb.

DNA diagnosis (based on 1 (!) cox 1 sequence)

‘G’ in site 97, ‘C’ in site 205, ‘C’ in site 271, ‘C’ in site 418.

Remarks

This molecularly distinct species is represented in our material by a single specimen (SL 28.2 mm) and, due to the unknown intraspecific variability, we abstain from the formal description of a new species. It shows some resemblance to Leucosyrinx sp. 18, differing in a slightly broader shell with a higher spire.

It is very similar to Leucosyrinx sp. 14 from the Coral Sea, differing in its larger size. Both species are not closely related to Leucosyrinx sp. 1 .

Figures

Fig. 15. Radulae of species of Leucosyrinx Dall, 1889. A. L. margaritae (E.A. Smith, 1904), MNHN- IM-2009-13446, SL 40.9 mm. B. L. margaritae, MNHN-IM-2013-19931, SL 27.5 mm. C. L. zahariasi sp. nov., MNHN-IM-2013-69116, SL 15.8 mm (AL 4.4). D. L. jeedara Kantor, Hallan & Criscione, 2022, holotype, AMS C.483810, SL 31.3 mm. E. L. truwalamuka Kantor, Hallan & Criscione, 2022, holotype, AMS C.557045, SL 30.9 mm. F. Leucosyrinx sp. 21, MNHN-IM-2009-13324, SL 27.5 mm. G. L. herosae sp. nov., MNHN-IM-2009-17089, SL 32.2 mm. H. L. bourgeoisae sp. nov., holotype, MNHN-IM-2013-19785, SL 32.1 mm. I. Leucosyrinx sp. 1, MNHN-IM-2013-66109, New Caledonia, 700–740 m, SL 28.2 mm. Scale bars = 100 µm.

Fig. 19. A–E. Leucosyrinx herosae sp. nov. A–C. Holotype, MNHN-IM-2013-19689, SL 47.2 mm. D. MNHN-IM-2009-17059, Papua New Guinea, 620–663 m, SL 26.9 mm. E. MNHN-IM-2009-17089, Papua New Guinea, 620–663 m, SL 32.2 mm. F. Leucosyrinx sp. 17, MNHN-IM-2013-58803, Papua New Guinea, 761–825 m, SL 38.7 mm.G–L. Leucosyrinx bourgeoisae sp. nov. G–I. Holotype, MNHN- IM-2013-19785, SL 32.1 mm. J. MNHN-IM-2009-13590, Solomon Is., 782–884 m, SL 25.2 mm. K. MNHN-IM-2009-17002, Papua New Guinea, 788–805 m, SL 20.7 mm. L. MNHN-IM-2009-13417, New Caledonia, 775–792 m, SL 26.5 mm. M. Leucosyrinx sp. 1, MNHN-IM-2013-66109, New Caledonia, 700–740 m, SL 28. 2 mm. N. Leucosyrinx sp. 2, MNHN-IM-2009-16783, Solomon Is., 765–773 m, SL 27.9 mm. A–F = at the same scale; G–N = at the same scale.