taxonID	type	description	language	source
131BBD7A94379433FDEE577CFC3FFEE4.taxon	type_taxon	Type species Colossendeis arcuata Loman, 1908 (by original designation).	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94379433FDEE577CFC3FFEE4.taxon	diagnosis	Diagnosis of the genus (emended from Turpaeva 1973 and Takahashi et al. 2007) Trunk four-segmented, lateral processes separated by twice their own diameter or less. Cephalon with pair of anterior projections on both sides of proboscis, on which palps articulate; anterior projection individualised, base segmented, apparently not movable. Proboscis massive, as long or longer than body, inflated around midpoint, constricted at base, tapering at tip. Abdomen small, ventralised and bent downward. Chelifores absent. Palps 9 - articled. Ovigers 10 - articled plus terminal claw. Legs slender. Propodus devoid of auxiliary claws. Also includes Hedgpethia caudata Turpaeva, 1993 which does not match this diagnosis (see Discussion).	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94379433FDEE577CFC3FFEE4.taxon	discussion	Remarks Palps in species of Hedgpethia have been generally regarded as 10 - articled. This number is due to the cephalic anterior projections, of which the base seems articled, is included in the count. This projection is likely homologous to that found in the closely related genus Colossendeis, which was demonstrated to be part of the cephalon, and not an article (Cano-Sánchez & López-González 2016). The palps in Hedgpethia are therefore regarded as 9 - articled in the present work.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94369433FD9F53FAFC89FBC3.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94369433FD9F53FAFC89FBC3.taxon	materials_examined	Type material (not examined) Holotype BANDA SEA • ♂; Gulf of Boni, west off Kabaena Island; 5 ° 26 ′ S, 121 ° 18 ′ E; depth 1944 m; Siboga Expedition stn 210 a; NL, ZMA. PYC. 1322.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94369433FD9F53FAFC89FBC3.taxon	distribution	Distribution and depth range Besides the Gulf of Boni in Banda Sea (type locality), additional data on GBIF (2025) extends the distribution to the Gulf of Alaska and in the vicinities of the Commander Islands. The divergent collection localities may suggest the presence of more than one species, and this northern material should be reexamined side by side with the holotype. Minimal known depth range 1944 – 4200 m (1944 m only when excluding Alaska and Commander Islands material).	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94369433FDE256E1FDD9F8FB.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94369433FDE256E1FDD9F8FB.taxon	materials_examined	Type material (not examined) Holotype NORTHEASTERN ATLANTIC • ♀; Josephine Bank; 36 ° 40.7 ′ N, 14 ° 15.5 ′ W; depth 211 – 241 m; 1 Jul. 1967; Meteor stn 120; ZMH-A 50168.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94369433FDE256E1FDD9F8FB.taxon	distribution	Distribution and depth range Eastern North Atlantic (West to Galicia, Portugal and Tanger), including Josephine Bank (type locality), and across the Gibraltar Strait east to the Île du Levant, Hyères (Mediterranean French coast). Minimal known depth range 100 – 1110 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94319434FED15376FAA0FA6D.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94319434FED15376FAA0FA6D.taxon	materials_examined	Type material (not examined) Holotype SEA OF OKHOTSK • sex unknown; northeastern Sea of Okhotsk; depth 1100 m; 3 Oct. 1952; R / V Vityaz cruise 12 stn 1780; IORAS, INV 0002674. Paratypes SEA OF OKHOTSK • 2 specs; same data as for holotype; hosting institution unknown • 1 spec.; southern Sea of Okhotsk; 10 Aug 1949; R / V Vityaz; hosting institution unknown • 1 spec.; 1932; R / V Gagara stn 217; hosting institution unknown • 19 specs; 1932; R / V Gagara stn 247; hosting institution unknown • 1 spec.; 1932; R / V Gagara stn 250; hosting institution unknown • 1 spec.; 1932; R / V Gagara stn 261; hosting institution unknown • 2 specs; 1952; R / V Guidrolog; hosting institution unknown. NORTHWESTERN PACIFIC • 2 specs; south of Southern Kuril Islands; 1949; R / V Toporok; hosting institution unknown.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94319434FED15376FAA0FA6D.taxon	distribution	Distribution and depth range Sea of Okhotsk (type locality) and east to Kuril Islands. Minimal known depth range 303 – 1100 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94319434FED15376FAA0FA6D.taxon	discussion	Remarks Stock (1991 a) suggested this species to be a possible junior synonym to Hedgpethia californica (Hedgpeth, 1939), without explicit justification. However, the mediodorsal ornamentation of H. bicornis as well as the low tubercle on the anterior margin of its cephalon distinguish it from H. californica.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94319435FE9B5473FB4CFC81.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94319435FE9B5473FB4CFC81.taxon	materials_examined	Type material (not examined) Holotype SEA OF OKHOTSK • sex unknown; southern Sea of Okhotsk; depth unknown; 11 May 1953; R / V Vityaz; hosting institution unknown. Paratypes SEA OF OKHOTSK • 10 specs; depth unknown; 1932; R / V Gagara; hosting institution unknown.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94319435FE9B5473FB4CFC81.taxon	distribution	Distribution and depth range Sea of Okhotsk (type locality), South Kuril Islands and Eastern Honshu coast (Sagami Bay). Depth range 300 – 780 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94319435FE9B5473FB4CFC81.taxon	discussion	Remarks The types should be at the IORAS, like the holotype of H. bicornis, but they were not listed in Dudnik & Kremenetskaia (2025) nor were they retrieved after examination (Dudnik pers. com.).	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94309435FD86511EFE3CF901.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94309435FD86511EFE3CF901.taxon	materials_examined	Type material (not examined) Holotype NORTHEASTERN PACIFIC • ♂; Off Tijuana; 32 ° 29.8 ′ N, 117 ° 24.8 ′ W; depth 330 m; 2 Jul. 1916; Scripps Institution of Oceanography coll. no 1189; USNM 78022. Paratype NORTHEASTERN PACIFIC • ♂; same data as for holotype; USNM 78021.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94309435FD86511EFE3CF901.taxon	distribution	Distribution and depth range Besides the type locality (off Tijuana), specimens were sampled in the Gulf of Alaska. Minimal known depth range 330 – 560 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94309436FDF9549EFE74FD75.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94309436FDF9549EFE74FD75.taxon	materials_examined	Type material (not examined) Holotype GREAT AUSTRALIAN BIGHT • ♀; Southwestern Australia, Bald Island; 35 ° 16 ′ 53.3 ″ S, 18 ° 42 ′ 32.4 ″ E [sic; 118 ° 42 ′ 32.4 ″ E] – 35 ° 16 ′ 51.6 ″ S, 118 ° 47 ′ 56.4 ″ NE; depth 976 – 980 m; 24. Nov. 2005; Australian Commonwealth Scientific and Industrial Research Organization (CSIRO) ‘ Voyage of Discovery’ survey stn 036 - 008; WAM T 92360. Paratypes	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94309436FDF9549EFE74FD75.taxon	description	GREAT AUSTRALIAN BIGHT • 2 ♂♂; same data as for holotype; NVM JM 54989.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94309436FDF9549EFE74FD75.taxon	distribution	Distribution and depth range Reported only from Bald Island in the Great Australian Bight (type locality). Maximal known depth range 976 – 980 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94339436FDE4516AFE55FAD2.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94339436FDE4516AFE55FAD2.taxon	materials_examined	Type material (not examined) Holotype SOUTHEASTERN PACIFIC • sex unknown; off Southern Peru; 17 ° 42 ′ S, 78 ° 59.2 ′ W; 2710 – 3080 m; 20 Nov. 1968; R / V Akademik Kurtchatov stn 271; hosting institution unknown.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94339436FDE4516AFE55FAD2.taxon	distribution	Distribution and depth range Only known from the type locality (off Southern Peru); Maximal known depth range 2710 – 3080 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94339436FDE4516AFE55FAD2.taxon	discussion	Remarks The holotype was not retrieved; it was originally deposited at the IORAS as explicitly mentioned by Turpaeva (1993), but was not listed by Dudnik & Kremenetskaia (2025) and was not retrieved there (Dudnik pers. com.).	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94339437FDE457D3FC9CFCC1.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94339437FDE457D3FC9CFCC1.taxon	materials_examined	Type material (not examined) Holotype BERING SEA • ♀; Aleutians West Census Area (Alaska), Pribilof Islands, south of Saint George Island; 56 ° 1 ′ 59.88 ″ N, 169 ° 30 ′ W; depth 0 – 221 m; 17 Jul. 1893; R / V Albatross, United States Fish Commission (USFC) stn 3500; USNM 81496. Paratypes BERING SEA • 3 specs; Aleutians West Census Area (Alaska), Pribilof Islands, north of Saint Paul Island; 58 ° 23 ′ N, 170 ° 21 ′ W; depth 3939 m; 11 Aug. 1895; USFC stn 3603; hosting institution unknown.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94339437FDE457D3FC9CFCC1.taxon	distribution	Distribution and depth range Recorded from the Aleutian Islands and the Bering Sea, including off Pribilof Islands (type locality), as well as around Japan (Sea of Japan, coasts of Honshu, Hokkaido and in the Tsushima Straits; Pacific coasts Honshu, Shikoku, Kyushu and down to southwest of Danjo Islands). Minimal known depth range 41 – 926 m? Hilton (1943) cites three specimens from 1771 fathoms (3939 m), and Dudnik (2025) records one specimen sampled at depths of 6410 – 6757 m. These four specimens should be reexamined for confirmation, and contamination should also be considered.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94329437FDE251DEFD78F962.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94329437FDE251DEFD78F962.taxon	materials_examined	Type material (not examined) Holotype SOUTHEASTERN INDIAN OCEAN • ♂; Western Australia, west of Lancelin Island; 31 ° 5 ′ S, 116 ° 55 ′ E ” [reinterpreted as 114 ° 55 ′ E]; depth 113 – 122 m; 5 Feb. 1964; CSIRO stn 46; WAM 70 - 3953. Paratypes SOUTHEASTERN INDIAN OCEAN • 1 ♀; Western Australia, west of Mandurah; 32 ° 33 ′ S, 115 ° 4 ′ E; depth 110 m; 23 Nov. 1970; R / V Diamantina stn 4; WAM 71 - 1789 • 1 ♀ gravid; Western Australia, southwest of Jurien Bay; 30 ° 38 ′ S, 114 ° 47 ′ E; depth 110 m; 9 Dec. 1970; R / V Diamantina stn 108; WAM 71 - 1791 • 1 ♀; Western Australia, northwest of Bunbury; 32 ° 57.5 ′ S, 114 ° 48 ′ E; depth 122 – 139 m; 15 Mar. 1972; R / V Diamantina cruise DM 1 / 72 stn 8; USNM 149237.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94329437FDE251DEFD78F962.taxon	distribution	Distribution and depth range Southwestern coast of Australia (type locality west of Lancelin Island) and Great Australian Bight. Minimal known depth range 110 – 130 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94329438FDE25483FD4BFB04.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94329438FDE25483FD4BFB04.taxon	materials_examined	Type material (not examined) Holotype NORTHWESTERN PACIFIC • ♀; Eastern Honshu, Sagami Bay, Misaki; F. Doflein leg.; hosting institution unknown. Other material examined SOUTHWESTERN INDIAN OCEAN • 1 spec.; Mozambique Channel, north of Mayotte, northeast of Northern Reef; 12 ° 29 ′ 53.9988 ″ S, 45 ° 1 ′ 59.9988 ″ E; depth 450 m; 30 Mar. 1977; BENTHEDI stn DS 71; MNHN-IU- 2009 - 3005.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94329438FDE25483FD4BFB04.taxon	distribution	Distribution and depth range West Kyushu, Eastern Coast of Japan from South Kyushu to Hokkaido and including Sagami Bay (type locality), east of Kurile Islands. GBIF (2025) records extend further this distribution to the Aleutian Islands and Alaska, and to Mayotte. This latter record is particularly distant from the known distribution. I could examine part of this material (specimen MNHN-IU- 2009 - 3005), but did not identify any obvious morphological difference from Loman’s (1911) illustrations. However, these are insufficient in details and the original material should also be reexamined. Minimal known depth range 40 – 869 m? Some previous authors (starting from Utinomi 1971) extend this depth range up to 20 m but I have not found any corresponding record in the literature.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943D9438FDEC569AFAD7F8D4.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943D9438FDEC569AFAD7F8D4.taxon	materials_examined	Type material (not examined) Holotype SOUTWESTERN PACIFIC • sex unknown; New Zealand, southeast of South Island, off Dunedin; 45 ° 57.9 ′ N, 171 ° 45.7 ′ E; depth 1400 – 1415 m; 23 Feb. 1995; New Zealand Oceanographic Institute (NZOI) stn W 460; NIWA, H- 695. Paratypes SOUTWESTERN PACIFIC • 4 specs; same details as holotype; NZOI, P- 1142 • 3 specs; same data as for holotype.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943D9438FDEC569AFAD7F8D4.taxon	distribution	Distribution and depth range East off South Island in New Zealand (type locality). Minimal known depth range 1415 – 1442 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FE6C5376FB83FD0C.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FE6C5376FB83FD0C.taxon	materials_examined	Type material (not examined) Holotype PHILIPPINE SEA • ♂; Okinawa, northeast of Ie Island; 26 ° 49.50 ′ N, 127 ° 42 ′ E; depth 199 – 202 m; 23 May 2003; TRV Toyoshio-maru; ZIHU 03171.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FE6C5376FB83FD0C.taxon	distribution	Distribution and depth range Only known from Ie Island in Okinawa (type locality), depth range 199 – 202 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FD9B5092FC6FFABB.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FD9B5092FC6FFABB.taxon	materials_examined	Type material (examined) Holotype SOUTHWESTERN INDIAN OCEAN • sex unknown; Atlantis bank; 32 ° 42.86 ′ S, 57 ° 16.34 ′ E; depth 750 m; 14 Dec. 2011; R. R. S. James Cook voyage JC 066 stn 8.29; NHMUK ZOO- 2018.38. Paratypes SOUTHWESTERN INDIAN OCEAN • 4 specs; same data as for holotype; NHMUK ZOO- 2018.39 • 1 spec.; same data as for holotype; NHMUK ZOO- 2018.40.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FD9B5092FC6FFABB.taxon	distribution	Distribution and depth range Only known from Atlantis bank (type locality), depth 750 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FE595728FB7AF864.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FE595728FB7AF864.taxon	materials_examined	Type material (not examined) Holotype SOUTHWESTERN INDIAN OCEAN • ♂; northeast of South Africa, off northern coast of KwaZulu-Natal (including former KwaZulu = Zululand in Arnaud & Child 1988); 28 ° 31.7 ′ S, 32 ° 34 ′ E; depth 680 m; 24 May 1976; R / V Meiring Naudé stn SM 103; SAM- 18579. Paratype SOUTHWESTERN INDIAN OCEAN • 1 ♀; same data as for holotype; SAM-A 19580.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943C9439FE595728FB7AF864.taxon	distribution	Distribution and depth range Only known from the northern coast of KwaZulu-Natal (type locality), depth 680 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943F943AFDC55376FBFBFC3D.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943F943AFDC55376FBFBFC3D.taxon	materials_examined	Type material (not examined) Holotype NORTHEASTERN PACIFIC • sex unknown; California, west of Point Arguelo; 34 ° 45 ′ N, 123 ° 7 ′ W; depth ca 4100 m; 24 Jun 1991; cruise Pulse VII stn 721 M; USNM 234637. Paratype NORTHEASTERN PACIFIC • 1 spec.; California, west of Point Arguelo; 34 ° 49 ′ N, 123 ° 7 ′ W; depth ca 4100 m; 25 Jun. 1989; cruise Pulse I stn 124; USNM 234638 • 1 ♀; California, west of Point Arguelo; 34 ° 43 ′ N, 123 ° 1 ′ W; depth ca 4100 m; 23 Oct. 1990; cruise Pulse V stn 505 M; USNM 234639 • 1 sp.; California, west of Point Arguelo; 34 ° 42 ′ N, 123 ° 3 ′ W; depth ca 4100 m; 25 Oct. 1991; cruise Pulse X stn 1017 M; USNM 234640.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943F943AFDC55376FBFBFC3D.taxon	distribution	Distribution and depth range Only known from west of Point Arguelo (type locality), depth ca 4100 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943F943AFDFC51A2FDAFF9F3.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943F943AFDFC51A2FDAFF9F3.taxon	materials_examined	Type material (examined) Holotype SOUTHWESTERN INDIAN OCEAN • sex unknown; Middle of What Seamount; 37 ° 56.795 ′ S, 50 ° 27.240 ′ E [recovered from mission report]; depth 1414 m; 2 Dec. 2011; R. R. S. James Cook voyage JC 066 stn 6.7; NHMUK ZOO- 2018.41. Paratype SOUTHWESTERN INDIAN OCEAN • 1 spec.; Coral Seamount; 41 ° 22.31 ′ S, 42 ° 54.57 ′ E; depth 732 m; 20 Nov. 2011; R. R. S. James Cook voyage JC 066 stn 4.38; NHMUK ZOO- 2018.42.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943F943AFDFC51A2FDAFF9F3.taxon	distribution	Distribution and depth range Southwest Indian Ocean seamounts: Middle of What Seamount (type locality) and Coral Seamount. Known depth range 687 – 1414 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943F943BFE1F54F0FB87FEF0.taxon	materials_examined	Type material (not examined) Holotype PHILIPPINE SEA • ♂; Kagoshima Prefecture, south of Yaku Island (= Yakushima Island); 30 ° 8.9 ′ N, 130 ° 38.04 ′ E; depth 197 – 207 m; 26 May 2005; TRV Toyoshio-maru; ZIHU 3335.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943F943BFE1F54F0FB87FEF0.taxon	distribution	Distribution and depth range Only known from south of Yaku Island (type locality), depth range 197 – 207 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943E943BFDF853F1FE76FB56.taxon	description	Fig. 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943E943BFDF853F1FE76FB56.taxon	materials_examined	Type material (examined) Holotype CORAL SEA • sex unknown; off New Caledonia, Grand Passage; 18 ° 52.80 ′ S, 163 ° 21.7 ′ E; depth 550 m; 19 Sep. 1985; MUSORSTOM 4 stn CP 194; MNHN-IU- 2007 - 4581 (formerly part of lot MNHNPy 677). Paratypes CORAL SEA • 1 spec.; same data as for holotype; MNHN-IU- 2011 - 5711 (formerly part of lot MNHNPy 677) • 1 spec.; same data as for holotype; MNHN-IU- 2011 - 5712 (formerly part of lot MNHN-Py 677) • 1 spec.; same data as for holotype; MNHN-IU- 2007 - 4582 (formerly part of lot MNHN-Py 677) • 1 spec.; same data as for holotype; NL, ZMA. PYC. 3334 • 1 spec.; southeast of New Caledonia, southwest of Isle of Pins; 22 ° 55.7 ′ S, 167 ° 17 ′ E; depth 520 m; 28 Sep. 1985; MUSORSTOM 4 stn CP 215; MNHN-IU- 2007 - 4634 (formerly MNHN-Py 790).	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943E943BFDF853F1FE76FB56.taxon	distribution	Distribution and depth range Recorded from both northwest (type locality) and southeast extremities of New Caledonia. Known depth range 368 – 550 m.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943E943EFDC0574FFCB6F86A.taxon	description	urn: lsid: zoobank. org: act: B 4 C 8 A 512 - 51 FE- 4 EBF- 82 A 3 - 21 E 957 D 7 BBFC Figs 1 – 2, Table 1	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943E943EFDC0574FFCB6F86A.taxon	etymology	Etymology In apposition. Named after Nosferatu, a popular vampire character appearing for the first time in ‘ Nosferatu, eine Symphonie’ (1922), in reference to the somewhat bat-wing-like outline of the femorae.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943E943EFDC0574FFCB6F86A.taxon	materials_examined	Type material Holotype SOUTHWEST PACIFIC • ♀; south of New Caledonia, south-southeast of Isle of Pines; 22 ° 56 ′ 37.7952 ″ S, 167 ° 39 ′ 23.9832 ″ E; depth 310 – 403 m; 23 Aug. 2016; KANACONO stn DW 4745; GenBank nos: OP 985938 (mitochondrial genome), OQ 065619 (18 S); MNHN-IU- 2016 - 6868.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943E943EFDC0574FFCB6F86A.taxon	description	Description (holotype, ♀ (MNHN-IU- 2016 - 6868 )) MEASUREMENTS (mm). Trunk + cephalon length 2.2; trunk width at second trunk segment (lateral processes included) 1.1; proboscis length 3.8; abdomen length 0.09; femur length 4.7; tibia 1 length 7.5; tibia 2 length 4.1; tarsus length 0.9; propodus length 0.8; main claw length 0.4. Trunk fully segmented, compact. Trunk segments 1 – 3 posterior margin flaring and carrying one small dorsomedian pointed tubercle. Ocular tubercle medium-sized, pointed at tip, about 1.6 × as tall as base width, carrying four pigmented eyes. Lateral sense organs inconspicuous or absent. Palp insertion on cephalon at end of short anterolateral projection aside proboscis, base of which seemingly segmented. Oviger insertion ventral, just before first trunk segment lateral processes, individualised as short ventral projection. Lateral processes shorter than wide, without ornamentation, separated by less than own diameter. Proboscis about 1.7 × as long as whole body. Base constricted, not as basal stalk. Proboscis inflating from base to mid-length with gentle constriction about proximalmost third. Distalmost half tapering, distalmost third almost pipette-like. Tip rounded. Abdomen ventralised, not visible dorsally, directed diagonally downward, not reaching beyond lateral processes. Anus at tip. Chelifore absent. Palp 9 - articled. Article 1 shortest, shorter than wide. Article 2 longest, curved. Article 3 about twice as long as wide. Article 4 long, slightly more than half as long as article 2. Article 5 short, about twice as long as wide, more than 5 × as short as article 4. Article 6 thrice as long as wide, 1.7 × as long as article 5. Article 7 about as long as article 6. Articles 8 and 9 about 0.9 × as long as article 6. Articles 2 to 4 sparsely setose, articles 5 to 9 very setose ventrally. Individualised medium size setae carried on dorsodistal margin of articles 2 and 3. Oviger 10 - articled plus terminal claw. Articles 1 and 3 about as long as wide. Article 2 slightly longer. Articles 4 and 6 longest, subequal. Article 5 short, about 5 × as small as article 4. Articles 7 – 10 forming strigilis, article 7 longest, articles 8 and 9 subequal, article 10 shortest. Strigilis spines spatulate, denticulated distally, distributed in fields. Distalmost ventral spine of article 10 curved, forming subchela with terminal claw. Terminal claw wedge-like, with ventral cutting edge. Legs coxae 1 – 3 about as short as wide. Coxa 1 dorsally ornamented with dorsal spinules. Femur widest, with seven more or less elevated mediodorsal conical tubercles carrying one seta each, three of which on proximal half about half as high as femur width. Tibia 1 longest, 1.6 × as long as femur, carrying dorsally short setae, one slightly longer on distal margin. Tibia 2 slightly longer than half tibia 1, 0.9 × as long as femur, with one long seta dorsodistally and one strong spine ventrodistally. Tarsus about 0.2 × as long as tibia 2, with numerous ventral spines and more scarcely distributed dorsal spines. Propodus slightly shorter than tarsus, propodal sole carrying numerous spines. Main claw about half as long as propodus. Auxiliary claws absent.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A943E943EFDC0574FFCB6F86A.taxon	discussion	Remarks The femorae of H. nosferatu sp. nov. readily distinguish it from all other species in the genus. Tibia 1 is also particularly long for the genus, about 1.6 × as long as the femur. Most species have this ratio to 1.2 (e. g., H. bicornis, H. brevitarsis, H. chitinosa, H. shalei) or below. Hedgpethia eleommata has this ratio to 1.3, H. articulata 1.4, H. magnirostris 1.5, and H. tibialis 1.6 too. Hedgpethia nosferatu differs from H. magnirostris by its taller ocular tubercle; from H. articulata by the wider propodus and tarsus; from H. eleommata by the propodus / tarsus length ratio, and the shape of the proboscis; from H. tibialis, which is geographically close (New Caledonia), by the tarsus / propodus ratio. Hedgpethia nosferatu is morphologically closest to H. chitinosa. Besides the above-mentioned characters, H. nosferatu differs from this species by the shape of the proboscis, and the presence of spines on the sole of the propodus. The main claw also tends to be longer relative to the propodus in H. chitinosa, although this character seems to present important variations (Nakamura, 1987). Sea spider diversity in New Caledonia included so far 66 nominal species listed by Bamber (2007 b). Among them, 36 appear so far as endemic (Bamber 2007 b). Hedgpethia nosferatu is therefore the 67 th pycnogonid species recorded from New Caledonia, and potentially the 37 th endemic species. This is also the second species of Hedgpethia recorded from New Caledonia, after H. tibialis that was recorded north and south of the island (Stock 1991 a). The new species holotype is likely a female given the wide opening of the gonopores ventrally on coxae 2. Geographic and bathymetric distribution There are two main geographic components in the distribution of Hedgpethia as recorded in the literature (Fig. 2): A Northern Pacific distribution (Fig. 2 B) represented by seven species (H. bicornis, H. brevitarsis, H. californica, H. chitinosa, H. elongata, H. nasica, H. spinosa) distributed in an arch from Okinawa to California. Four of these species (H. brevitarsis, H. californica, H. elongata, H. spinosa) were found between 0 and 1000 m (Table 1). The distribution of H. bicornis extends slightly deeper, down to 1100 m in the Okhotsk Sea (type locality; Dudnik 2025); it was found as shallow as 303 m in the Kuril Islands, and possibly as shallow as 64 m along the southeastern coast of Kamchatka (Losina-Losinsky 1961). Hedgpethia chitinosa was also mostly sampled within the 0 – 1000 m range, but two sampling events for this species are recorded to 3939 m (Bering Sea; Hilton 1943) and ca 6500 m (south off Commander Islands; Dudnik 2025). Hedgpethia nasica was found only once, at ca 4100 m deep off the California coast. A Southern Indopacific distribution (Fig. 2 A, C) represented by eight species (H. calva, H. dampieri, H. eleommata, H. filamentus, H. magnirostris, H. nosferatu, H. shalei, H. tibialis) distributed from the eastern coast of South Africa to off New Caledonia and New Zealand, six of these species (H. calva, H. dampieri, H. filamentus, H. magnirostris, H. nosferatu, H. tibialis) were sampled uniquely above 1000 m deep. Two species have their bathymetry extending even deeper: H. eleommata was sampled around 1400 – 1450 m southeast off New Zealand; H. shalei was sampled on the Southwest Indian Ridge at 687 and 1414 m deep. Hedgpethia filamentus and H. shalei are the two species in this genus presently known from seamounts (Atlantis Bank and Middle of What Seamount; Staples 2019). Hedgpethia articulata and H. dofleini spread between these two geographic groups: H. articulata has the widest know bathymetric distribution and was sampled in Indonesia (ca 2000 m deep), the Bering Sea (ca 4000 m deep) and the Gulf of Alaska (3620 m deep); H. dofleini was mostly sampled off both sides of Japan (from Hokkaido to Kyushu; ca 40 – 900 m deep) and in the Aleutian Islands (ca 80 - 650 m deep), but one specimen recorded on GBIF (2025) was sampled off Mayotte in the Comoro Islands (450 m deep). Outside these distributions, H. caudata is the only species known off the Pacific coast of South America (Peru; approximatively 3000 m deep), and H. atlantica is the sole species recorded in the Northeast Atlantic from around 200 m (Josephine Bank; Stock 1970) to below 1000 m deep (Galicia Bank; Stock 1991 b); in the Gibraltar Strait (135 m deep; Stock 1987), and in the Western Mediterranean (French Mediterranean coast at a depth of 100 m; Arnaud 1987).	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
131BBD7A94259422FF1857D4FA90FE25.taxon	description	Below is an identification key for all Hedgpethia, the backbone of which is modified from the key of Stock (1970) for the species of the “ articulatum - group ” Rhopalorhynchus [= articulatum section in Stock 1958], that were later assigned to Hedgpethia.	en	Sabroux, Romain (2025): The genus Hedgpethia Turpaeva, 1973 (Pycnogonida: Colossendeidae): a review and a new species. European Journal of Taxonomy 1026: 147-170, DOI: 10.5852/ejt.2025.1026.3111, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3111/13875
