Neoterebra guadeloupensis Malcolm, Terryn & Fedosov, 2019

Fedosov, Alexander E, Malcolm, Gavin, Terryn, Yves, Gorson, Juliette, Modica, Maria Vittoria, Holford, Mandë & Puillandre, Nicolas, 2019, Phylogenetic classification of the family Terebridae (Neogastropoda: Conoidea), Journal of Molluscan Studies The Malacological Society of London 85 (4), pp. 359-388 : 25-26

Neoterebra guadeloupensis Malcolm, Terryn & Fedosov newspecies

( Fig. 13A, B )

Type material: Holotype: MNHN IM-2013-61448 , 1 lv, 17.2 mm; S Marie-Galante, Guadeloupe, 15 ° 50 'N, 61 ° 19 'W, 305–312 m (N/O Antea, KARUBENTHOS 2015 Stn DW4638). Paratypes 1–3: off Fajou, Guadeloupe, 16 ° 22 'N, 61 ° 34 ', 80 m (KARUBENTHOS 2012 Stn GD02). Paratype 1: MNHN IM-2013-20542 , 1 lv, 6.5 mm. Paratype 2: MNHN IM-2013-20541 , 1 lv, 5.7 mm. Paratype 3: MNHN IM-2013-20539 , 1 lv, 10.4 mm. Paratype 4: MNHN IM-2013-9110 , 1 lv, 7 × 2.1 mm; Port Louis, Guadeloupe, 16 ° 22 ' 46 'N, 61 ° 34 'W, 66 m (KARUBENTHOS 2012 Stn GD35).

Zoobank registration: urn:lsid:zoobank.org:act:57E995EE-24F0-47A0-9DDC-E9D54948B056

Diagnostic nucleotide positions: Table 11 .

Description: Shell small. Protoconch multispiral, transparent with 3 whorls tinged yellow; protoconch/teleoconch transition clear-cut with visible sinusigera. Teleoconch of holotype with 15 whorls; overall whorl outline straight to convex. Weak axial sculpture of 15 narrow axial ribs with wider interspaces, increasing with maturity to 25 on penultimate whorl. Deep subsutural groove crossed obliquely by ribs. Subsutural band with strong elongate nodes; subsequently, 2 strongly projecting spiral cords at top and middle of whorl dominating sculpture, forming reticulate pattern of deep indentations with thin ribs; the upper cord projects in outline beyond subsutural band. On mature whorls interspaces sometimes with 1 or 2 weak spiral striae. Reticulate sculpture continuing on shell base. Aperture long with weak callus; columella with 2 weak folds. Shell lacks any pattern; coloured in shades of white to yellow.

Habitat: Deep water, 60– 310 m.

Distribution: Only known from off Guadeloupe.

Etymology: Named after the type locality, the French Caribbean island of Guadeloupe.

Remarks: Anumber of species of Terebridae have been described from the Western Atlantic and Caribbean Sea that have a similar strong reticulate sculpture. These include N. limatula that has more than 2 strong spiral cords in addition to the subsutural band ( Fig. 13C ) and a paucispiral protoconch. Neoterebra colombiensis is very similar to N. guadeloupensis n. sp., but the spiral sculpture in the former is less dominant, giving a more uniform reticulate sculpture with nodes at the intersections. In addition, N. colombiensis has a paucispiral protoconch in comparison with the multispiral protoconch of N. guadeloupensis n. sp. Neoterebra simonei is similar in colour and sculpture, but has 3 spiral cords in addition to the subsutural band and has a distinctive paucispiral protoconch of 1.5 whorls. Other similar species from the region, e.g. N. intumescyra and N. alagoensis ( Fig. 9F ), all have paucispiral protoconchs and different sculpture.

Figures

Figure 9. Genera Profunditerebra n. gen. and Neoterebra n. gen. A. P. papuaprofundi n. sp., MNHN-IM-2013-58123, KAVIENG 2014 Stn CP4422, 02◦21'S, 150◦38'E, 496–609 m, 19.2 mm. B. P. orientalis, MNHN-IM-2009-29153, EXBODI Stn DW3930, 18◦37'S, 164◦26'E, 448–464 m, 39.6 mm. C. P. brazieri, MNHN-IM-2013-55861, MORRISON AUSTRALIA Stn TA22, 43◦10.4'S, 147◦51.3'E, 1–7 m, 32.4 mm. D. Terebra specillata lectotype, NHMUK 1844.6.7.84, San Blas, Mexico, 7 fms (= 12.8 m), 39.3 mm. E. P. poppei radula, MNHN-IM-2007-30546, SANTO 2006, Stn AT44, 15◦36'S, 167◦03'E, 86–118 m, broken. F. Terebra assu holotype, MNHN-IM-2000-25244, off Conceição da Barra, Espírito Santo, Brazil MD55, Stn DC75, 18◦59'S, 37◦50'W, 295 m, 9.8 mm. G. Terebra alagoensis holotype, MZSP 84238, continental slope off Alagoas, Brazil, 10◦05'57''S, 35◦46'24''W, 720 m, 9.8 mm. H. Neoterebra sterigmoides, MNHN-IM-2013-20352, KARUBENTHOS 2012 Stn GD02, 16◦22.57'N, 61◦34.12'W, 0–80 m, 29.6 mm.

Figure 13. Neoterebra guadeloupensis n. sp., Maculauger sudchinensis n. sp. and morphologically similar species. A. N. guadeloupensis n. sp. holotype, MNHN-2013- 61448, KARUBENTHOS 2015 Stn DW4638, 15◦50'N, 61◦18'W, 305–312 m, 17.2 mm. B. MNHN-IM-2013-20531, KARUBENTHOS 2012 Stn GD55, 16◦22.48'N, 61◦35.46'W, 85 m, 9.4 mm. C. Terebra limatula syntype, USNM93971, Apalachicola Bay, FL, 17.8 mm. D, E. M. sudchinensis n. sp., holotype, MNHN-IM-2013-61887, ZhongSha 2015 Stn CP4144, 16◦6'N, 114◦23'E, 160–200 m, 19.9 mm. F. Terebra helichrysum lectotype, NHMUK 1903.12.15.117, Mussandam, Persian Gulf, 47 fms (= 86 m), 24.5 mm. G. Terebra levantina holotype, MNHN-IM-2000-2812, MUSORSTOM 2 Stn CP59, 14◦00'N, 120◦16'E, 186–190 m, 24.2 mm.