Pleurotomella esilda Dall, 1908

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 : 110

Pleurotomella esilda Dall, 1908 (family and genus assignment uncertain)

Fig. 35F

Pleurotomella (Pleurotomella) esilda Dall, 1908: 282 .

Leucosyrinx esilda – McLean 1971b: sp. 1668, with query.

Type material

Holotype

PACIFIC OCEAN • Gulf of Panama; depth 730 ftm (= 1335 m); USNM 123126 .

Remarks

The species is based on a single, heavily broken, dead-collected shell (22.8 mm in shell length). It differs significantly from species of Leucosyrinx as defined here, exhibiting a very short siphonal canal, strong and long axial ribs extending to the poorly defined subsutural ramp, and an anal sinus situated close to the shoulder. On these grounds, we exclude the species from Leucosyrinx , but we are currently unable to determine its generic position.

Distribution

Type locality.

Figures

Fig. 35. Species excluded from Leucosyrinx Dall, 1889 and Comitas H.J. Finlay, 1926. A. Spergo? chuni (vonMartens,1901),holotype,ZMBMoll60091,SL98.9 mm(photocourtesy ofMuseumfürNaturkunde). B. Lora equatorialis Dall, 1919 (Pseudomelatomidae, genus assignment uncertain), syntype, USNM 97092, SL 13.5 mm (photo courtesy of USNM). C. Antimelatoma eremita (Murdoch & Suter, 1906), holotype, MNZ, M.001718 (from the website of MNZ,https://collections.tepapa.govt.nz/object/151599). D. Leucosyrinx elsa Thiele, 1925 (family and genus assignment uncertain), syntype, ZMB Mol 109383, SL 4.7 mm (photo courtesy of Museum für Naturkunde). E. Comispira erica (Thiele, 1925) comb. nov., syntype, ZMB Mol 109382, SL 20.1 mm (photo courtesy of Museum für Naturkunde). F. Pleurotomella esilda Dall, 1908 (family and genus assignment uncertain), holotype, USNM 123126, SL 22.8 mm (photo courtesy of USNM). G. Comispira exstructa (von Martens, 1904) comb. nov., holotype, SL 24 mm (from von Martens 1904). H–I. Sibogasyrinx lancea (Y.-C. Lee, 2001) comb. nov. H. Holotype, NMNS- 3704001, SL 46.9 mm (photo courtesy of Kun-Hsuan Lee). I. MNHN-IM-2009-13465, Philippines (sequenced specimen). Shells not to scale.