taxonID	type	description	language	source
03B687E9656CFFEAB894F90F9F74F8DC.taxon	type_taxon	Type species by monotypy. Iphitus tuberatus Jeffreys, 1883.	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656CFFEBB894F8FC9FCBFDCF.taxon	description	urn: lsid: zoobank. org: act: 9 B 2649 F 2 - 67 A 4 - 4016 - AD 48 - CDFBB 1 CC 64 BA	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656CFFEBB894F8FC9FCBFDCF.taxon	type_taxon	Type species. Iphitus (Depressiphitus) davidei sp. n.	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656CFFEBB894F8FC9FCBFDCF.taxon	etymology	Derivation of name. The name merges the Latin adjective ‘ depressus ’ (depressed) with ‘ Iphitus ’ to recognize its shell morphology and closeness to Iphitus Jeffreys, 1883.	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656CFFEBB894F8FC9FCBFDCF.taxon	diagnosis	Diagnosis. Shell very small, with planispirally coiled teleoconch, globose-depressed, fragile, deeply umbilicated, whorls rapidly increasing in diameter. White with glossy and translucent surface in fresh specimens. Teleoconch consisting of two rounded whorls separated by deeply impressed suture. Sculpture of numerous weak orthocline axial ribs and 3 – 5 faint spiral cords. Aperture oval-shaped, almost circular, inner lip smooth. Umbilicus open, simple and deep, with a weak spiral sculpture formed by few cords. Protoconch mucronate, protruding obliquely above the teleoconch, strongly sculptured by orthocline axial ribs and weaker spiral cords. Operculum and animal unknown.	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656CFFEBB894F8FC9FCBFDCF.taxon	distribution	Distribution. Northeastern Atlantic Ocean, at depths from 795 to 965 m.	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656DFFEBB894FDC19E90F802.taxon	description	(Figs. 2 – 3)	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656DFFEBB894FDC19E90F802.taxon	materials_examined	Type material. Holotype: Northeastern Atlantic Ocean: Atlantis Seamount; Seamount 2 - DW 264: 34 ° 24 ’ 42 N; 30 ° 30 ’ 48 W, 795 – 830 m (MNHN-IM- 2000 - 39815). Paratypes: Paratype 1: Northeastern Atlantic Ocean: Coral Patch Seamount; 34 ° 57 ’ N; 11 ° 53 ’ W, 936 – 965 m (MZUB 60359). Paratype 2: Northeastern Atlantic Ocean: Coral Patch Seamount; 34 ° 57 ’ N; 11 ° 53 ’ W, 936 – 965 m (MZUB 60360). Paratype 3: Atlantic Ocean: Coral Patch Seamount; 34 ° 57 ’ N; 11 ° 53 ’ W, 936 – 965 m (MZUB 60361). Paratype 4: Northeastern Atlantic Ocean: Coral Patch Seamount; 34 ° 57 ’ N; 11 ° 53 ’ W, 936 – 965 m (MMK n. 34222).	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656DFFEBB894FDC19E90F802.taxon	description	Description (holotype). Shell morphology as for Depressiphitus subgen. nov. Shell small, fragile, globose-depressed, wider than high (diameter 2.93 mm; height 2.16 mm), white with thin, glossy and translucent surface in fresh specimens (opaque-whitish in old shells). Teleoconch of two rounded whorls separated by deeply impressed suture. Sculpture of numerous weak orthocline axial ribs and 3 – 5 weak spiral cords. Aperture oval, almost circular, inner lip smooth. Umbilicus open, simple and deep, with a weak spiral sculpture formed by few cords. Protoconch brownish, multispiral, conic-subcylindrical of 3.5 whorls, deviated from axis of teleoconch by about 20 °; height 320 µm, diameter 280 µm, strongly sculptured with orthocline axial ribs. Embryonic whorl dome-shaped, smooth. Operculum and animal unknown.	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656DFFEBB894FDC19E90F802.taxon	materials_examined	Type locality. Atlantis Seamount (34 ° 24 ’ 42 N; 30 ° 30 ’ 48 W, at 795 – 830 m). Age. Quaternary, possibly subrecent.	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
03B687E9656DFFEBB894FDC19E90F802.taxon	etymology	Etymology. The species honors the marine biologist Davide Tagliapietra (1960 – 2023) in recognition of his important contributions on the ecology of the north Adriatic and Venice Lagoon, with special focus on shipworm bivalves. Habitat. I. davidei sp. nov. is a bathyal species, probably an ectoparasite of unknown cnidarians associated with cold-water coral habitats, as also suggested by the richness in dead scleractinians at both collecting stations. Epitoniids are all parasites on cnidarians (Robertson 1970; Beu 1978; Bouchet & Warén 1986; Gittenberger et al. 2000; Gofas et al. 2011; Rueda et al. 2019, with references therein) and we assume that the present new species is no exception. However, this remains speculative at this stage, and we assume that I. davidei parasitizes a still unknown deep-water cnidarian (s), by analogy with a few live-collected Iphitus all found associated with colonial scleractinians (e. g., Beu & Climo 1974; Beu 1978; Taviani & Sabelli 1982; Bouchet & Waren 1986; Rubio Salazar 1987). The skeletal assemblage at Coral Patch included also empty shells belonging to other Iphitus, namely I. tenuisculptus and I. tuberatus. Colonial and solitary dead scleractinian corals (e. g., Madrepora oculata, Madracis sp.) contributed to the taphocoenoses draping the upper part of the Coral Patch Seamount, and scleractinians occur also in the skeletal assemblage on the Atlantis Seamount. The rather fragile globose shell and very small dimensions of I. davidei sp. nov. could indicate that the species could possibly live embedded within a (small-sized?) cnidarian other than a scleractinian. In the lack of any direct evidence, this hypothesis is only conjectural. Additional remarks. The best-preserved shell from Coral Patch Seamount was originally selected as holotype but got irreparably damaged after its SEM study (Fig. 3). Therefore, we select as holotype the next best-preserved shell, i. e., a specimen from Atlantis Seamount.	en	Taviani, Marco, Bini, Gianluigi, Nappo, Andrea, Pagli, Attilio (2025): Iphitus (Depressiphitus) davidei (Caenogastropoda, Epitoniidae): A peculiar new deep-sea subgenus and species from Eastern Atlantic seamounts. Zootaxa 5620 (2): 353-366, DOI: 10.11646/zootaxa.5620.2.8, URL: https://doi.org/10.11646/zootaxa.5620.2.8
