Duplicaria herberti 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 : 23-24

Duplicaria herberti Malcolm, Terryn & Fedosov new species

( Fig. 11 A–C)

Duplicaria mozambiquensis— Aubry, 1992 : Fig. 9 . Aubry etal., 2006: pl. 16. (Both not Bratcher & Cernohorsky, 1982).

Type material: Holotype: MNHN IM-2013-52381 , lv, 29.7 mm; Inhaca I., Mozambique, 26°00.0'S, 32°54.4'E, 4 m ( INHACA 2011 Stn MR15). Paratypes 1–3: Inhaca I., Mozambique, 26°03.1'S, 33°01.0'E, 50–53 m (INHACA 2011, Stn MD13). Paratype 1: MNHN IM-2013-52373 , lv, 17.4 mm. Paratype 2: MNHN IM-2013-52379 , lv, 23.0 mm. Paratype 3: MNHN IM- 2013-52383 , lv, 28.2 mm. Paratype 4: MNHN IM-2013-52385 , 1 lv, 30.8 mm; type locality. Paratype 5: MNHN IM-2013-52405 , lv, 24.0 mm; 26°05.0'S, 32°59.0'E, 0–35 m (INHACA 2011 Stn MA15). Paratypes 6–19: YT, 14 lv, 22.4–32.5 mm; Inhaca I., Mozambique, 6–8 m. Paratype 20: SG, lv, 24.0 mm; off Inhaca I., Mozambique, 25°59'59.3''S, 32°54'43.2''E, 4 m. Paratypes 21–25: JR, 4 lv, 30.0– 39.5 mm; off Inhaca I., Mozambique, 4–8 m. Paratype 26: GM, lv, 26 mm; Inhambane, Mozambique. Paratype 27: YT, dd, 32.0 mm; off Durban Bluff, Natal, South Africa, in sand dredging at bay-head dump.

Zoobank registration: urn:lsid:zoobank.org:act:C26159E5-4A5A-4218-AC7F-A76103809749

Diagnostic nucleotide positions: Table 11 .

Description: Shell of medium size. Protoconch paucispiral, about 1.0–1.5 broad whorls. Teleconch of holotype 11 whorls. Outline of teleoconch whorls straight. Spiral sculpture absent. Subsutural band with axially elongated nodes corresponding to axial ribs on remainder of whorl. Subsutural band bordered by deep and wide depression lacking punctations. Straight axial ribs stretching across whorl, sharply angular adapically and becoming more rounded abapically; ribs half as wide as interspaces; 17 ribs on penultimate whorl of holotype. Axial growth lines pronounced throughout whorl height. Aperture wide, somewhat quadrate, brown with white band; columella straight with visible fold. Shell colour dark, later whorls blackish brown with spiral whitish line at the periphery.

Habitat: Depth 0– 55 m.

Distribution: S Mozambique to off Durban, South Africa.

Etymology: The species honours Dr David G. Herbert (formerly Chief Curator of Mollusca, NMSA), who contributed with detailed observations on the D. mozambiquensis type series at NMSA and provided additional historical information.

Remarks: Shell colour varies: juveniles are beige to fawn, but light brown specimens are known. This species has been confused with D. mozambiquensis . The holotype of D. mozambiquensis (NMSA H7843/T2541) is a small, slender shell of 22.3 mm, but the type series shows a large discrepancy in many features between this holotype and all the paratypes—which are specimens of D. herberti n. sp. Subsequent authors have to our knowledge always featured specimens of D. herberti n. sp. as ‘ D. mozambiquensis ’, which should be considered a rarely encountered species.

The whorls of D. mozambiquensis ( Fig. 11D ) have a narrower apical angle, its convex axial ribs giving an extremely rounded convex outline. The subsutural band comprises round nodes, compared with elongated nodes on D. herberti n. sp. The axial ribs of D. herberti n. sp. become straight, creating an angular projection posteriorly. The peripheral white band in D. mozambiquensis is wider and more clearly defined. Both have a subsutural furrow with minute axial growth striae, appearing as a punctate groove in D. mozambiquensis , while this feature is not present in D. herberti n. sp. We have no confirmation that D. mozambiquensis has ever been found in southern Mozambique, while specimens of D. herberti n. sp. are found extensively in southern Mozambique and South Africa. Within Duplicaria , several species change the sculpture of their whorls as they grow and do so at variable rates. However, a comparison of the two species highlights differences in the early whorls and protoconch. The protoconch of D. mozambiquensis is about 30% narrower than that of D. herberti n. sp. and the latter has a broader, inflated shape. The early whorls of D. mozambiquensis have distinctive round nodes compared with convex ribs on D. herberti n. sp.

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 11. Duplicaria herberti n. sp., Partecosta bozzettii n. sp. and morphologically similar species. A. D. herberti, holotype, MNHN-IM-2013-52381, INHACA 2011 Stn MR15, 26◦00.0'S, 32◦54.4'E, 0–1 m, 29.7 mm. B. D. herberti, MNHN-IM-2013-52366, INHACA 2011 Stn MM1, 26◦02.3'S, 32◦54.1'E, 0–1 m, 12.4 mm. C. D. herberti (paratype of D. mozambiquensis), NMSA 566, 27 mm. D. D. mozambiquensis, YT, Quelimane Pebane, Mozambique, 35–45 m, 19.6 mm. E. Partecosta bozzettii holotype, MNHN-IM-2009-10163, ATIMO VATAE Stn TP29, 25◦03'43.9''S, 46◦57'42.9''E, 3–4 m, 12.5 mm. F. Partecosta trilineata holotype, MNHN-IM-2000-21473, S Madagascar, Lavanono, 8.85 mm. G. P. daniae holotype, MMM, Farol das Lagostas, Luanda, Angola, 12 mm.

Tables

Table 11. Diagnostic combinations of nucleotides in COI alignment for new species of Terebridae described herein.

Bathyterebra zhongshaensis n. sp.
Sequences analysed: 1
Diagnostic nucleotides: 34: G, 223: G, 373: A, 487: C, 499: C, 581: C
Duplicaria herberti n. sp.
Sequences analysed: 6
Diagnostic nucleotide: 43:G,184:T,232:A,241:A,277:T,451:G,526:A
Partecosta bozzettii n. sp.
Sequences analysed: 3
Diagnostic nucleotides: 85: A, 121: G, 271: A, 301: G, 350: T, 541: G
Profunditerebra papuaprofundi n. sp.
Sequences analysed: 1
Diagnostic nucleotides: 169: G, 397: C, 457: C, 487: G, 622: C, 658: C
Profunditerebra macclesfieldensis n. sp.
Sequences analysed: 3
Diagnostic nucleotides: 61: C, 367: C, 400: C, 445: C, 457: C, 487: G
Neoterebra guadeloupensis n. sp.
Sequences analysed: 14
Diagnostic nucleotides: 439: T, 493: A, 526: G, 580: A, 604: C, 628: A
Maculauger sudchinensis n. sp.
Sequences analysed: 3
Diagnostic nucleotides: 85: C, 217: G, 238: G, 256: A, 514: T, 625: G