Leucosyrinx undetermined

Leucosyrinx sp. 15 Figs 5I, 8L–M Material examined (sequenced) PHILIPPINES • 1 lv; Luzon I.; 15°48′ N, 121°47′ E; depth 593 m; AURORA 2007, stn CP2664; MNHN-IM-2009-13331. Description RADULA (Fig. 5I). Short, comprises around 30 rows of teeth, 6–7 nascent. Marginal teeth duplex, ~370 µm (5.2% AL without canal). Major limb narrow lanceolate in dorsal view, curved. Accessory limb relatively broad, constitutes about 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) ‘C’ in site 400, ‘A’ in site 460, ‘C’ in site 514. Remarks The species is very similar to Leucosyrinx derzellei sp. nov. from Madagascar, differing in less angular axial folds at shoulder. Besides, marginal radular teeth are longer in Leucosyrinx sp. 15 in relation to AL (5.2% vs 2.6%). The phylogenetic analysis clearly demonstrates that both species are separate. Since the species is represented by a single specimen and the interspecific variability can not be estimated, we presently abstain from describing this specimen from the Philippines as a new species.