Leucosyrinx sp. 7

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 : 82

Leucosyrinx sp. 7

Figs 2 , 27A–B

Material examined (sequenced)

SOLOMON SEA • 1 lv; SE of Tuam Is ; 6°04′ S, 148°12′ E; depth 500–575 m; PAPUA NIUGINI, stn CP4009; MNHN-IM-2013-19933 .

Description

RADULA ( Fig. 2 ). Typical of the genus. Marginal teeth ~370 µm in length (5.2% AL without canal).

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

‘G’ in site 52, ‘G’ in site 265, ‘G’ in site 569.

Remarks

This molecularly distinct species is represented by a single specimen in our material. Conchologically it is indistinguishable from some specimens of L. breviplicata and Leucosyrinx sp. 26. From the latter it also differs in the presence of a slightly darker spiral band on the shoulder. It co-occurs with Leucosyrinx sp. 26 in the Solomon Sea (collected at neighbouring stations with the difference of only two minutes of longitude). Leucosyrinx sp. 7 is sister species to Leucosyrinx sp. 26, but both species are separated in all the ASAP partitions.

Figures

Fig. 2. Details of the radula of Leucosyrinx sp. 7. A. Dorsal view of the radular membrane. B. Bending plane of the radula, with some teeth in lateral view. C. Enlarged lateral view of the tip of marginal tooth showing the cutting edge, blade. Abbreviations: al = accessory limb of the marginal tooth; bl = cutting edge, blade; ml = major limb of the marginal tooth. Scale bars: A–B = 100 µm; C = 50 µm.

Fig. 27. A–B. Leucosyrinx sp. 7, MNHN-IM-2013-19933, Solomon Sea, 500–575 m, SL 26.5 mm. C–F. Leucosyrinx sp. 26. C. MNHN-IM-2013-19819, Solomon Sea, 618–626 m, SL 26.4 mm. D–F. MNHN-IM-2013-19918, Solomon Sea, 500–555 m, SL 23 mm. G–H. Leucosyrinx sp. 4, MNHN- IM-2013-19929, Solomon Sea, 500–555 m, SL 25.7 mm.I–J. Leucosyrinx sp. 6, MNHN-IM-2009-6036, Solomon Is., 314–410 m, SL 15.2 mm. All shells at the same scale.