DOI: 10.5281/zenodo.15157700
title: Table 2 in Discovery of a new species and host record of Holophryxus Richardson, 1905 (Isopoda: Dajidae) from the central Arctic: a model of enhanced descriptive standards for epicaridean isopods

description: Table 2. Distribution and host records of all nominal species of Holophryxus Richardson, 1905a [eight valid and two species inquirendae (Ho. septapodus, Ho. truncatus)]. ‘Unknown’ means that the parasite was found free in the plankton haul, presumably having become secondarily detached from its host, or, alternatively, was found among preserved museum material; ‘w.’ refers to the length of the trawl warp used (wire out) and does not necessarily reflect the depth at which the specimens were collected. Type localities marked by *
SpeciesHost(s)LocalityDepthReferenceHo. alaskensisPasiphaea pacifica Rathbun,South-eastern Alaska: Bushby274–512 mRichardsonRichardson, 1905a1902Point(1908)1Pasiphaea pacifica Rathbun,Canada: British Columbia,77–198 mButler (1964)1902from Granby Bay to Strait ofGeorgia, west coast of Van-couver IslandPasiphaea pacifica Rathbun,Alaska: Prince William Sound,100 mCoyle &1902 [intermediate host:Knight Island Passage,MuellerParaeuchaeta elongata60°15’N, 148°00’W(1981)(Esterly, 1913)]Pasiphaea pacifica Rathbun,Between California and Baja1200 mBoyko &1902California: south-east of SanWilliamsClemente Island, 32°30’N,(2021b)118°10’WUnidentified pasiphaeidCanada: British Columbia,366 mNierstraszshrimpStrait of Georgia& Brenderà Brandis(1931)2UnknownSouth-eastern Alaska*: Behm269–640 mRichardsonCanal and Lynn Canal, c.(1905a)355°51’05”N, 131°49’43”WUnknownCalifornia: Santa Barbara512 mRichardsonChannel(1908)1UnknownSouthern California:UnknownRichardsonunspecified locality(1905b)Ho. giardiBoreogennema borealisCommander Islands: Ostrov4941 mRichardsonRichardson, 1908(Rathbun, 1902)Toporkov west of Bering Is-(1908)4land, 54°48’N, 164°54’E*Ho. richardi Koehler,Eusergestes arcticus (Krøyer,Davis Strait: 64°22’N, 56°00’W400–800 m w.Stephensen19111855)(1912)5,6Eusergestes arcticus (Krøyer,Norway: vicinity of Herdla,200–380 mRustad (1935) 61855)Mangerfjord, Herløfjord, westof TorskøyUnknown7Norway: Herdlefjorden,200–390 mGreve &north-west of BergenJohannessen(1981)UnknownNorth Atlantic Ocean: south of0–2500 mKoehlerAzores, 33°41’N, 36°55’W*(1911)8Unknown7Davis Strait: 66°21’N, 57°04’W800 m w.Stephensen(1912)UnknownCeltic Sea: 48°09’N, 8°30’W300 m w.Stephensen(1915)UnknownWest of Iceland: 65°20’N,820 m w.Hansen (1916)27°12.5’WUnknownSouth of Iceland: 61°30’N,1800 m w.Hansen (1916)17°08’WUnknown7Various localities from east of630–1800 mJones &Galicia to Celtic Sea: 42°59’N,Smaldon10°29’W–47°52’N, 09°12’W(1986)Ho. acanthephyraeAcanthephyraNorth-east of Brazil: Rocas Atoll,630 mAlves-Júnior etStephensen, 1912acanthitelsonis Spence4°19’S, 35°29’Wal. (2019)Bate, 1888Acanthephyra pelagicaLabrador Sea: 60°07’N, 48°26’W*2000 m w.Stephensen(Risso, 1816)(1912)9Acanthephyra pelagicaSouth Pacific Ocean: 47°14’S,329 mSchultz(Risso, 1816)10132°28’W—47°08’S, 132°43’W(1977)11Acanthephyra pelagicaCeltic Sea: 47°21’N,1500 mJones &(Risso, 1816)08°19’W–47°23’N, 08°04’WSmaldon(1986)Acanthephyra pelagicaSouth Pacific Ocean: 40°01’S,880 mWasmer (1988)(Risso, 1816)149°57’WAcanthephyra purpurea A.Greenland: Cape Farewell2000 mGurjanovaMilne Edwards, 1881(1932)Acanthephyra purpurea A.Bahamas: 23°49’N, 76°58’W2134 m w.Boyko &Milne Edwards, 1881Williams(2021b)12UnknownBiscay Abyssal Plain: 46°15’N,1130–1800 mJones &10°21’W–46°30’S, 10°28’WSmaldon(1986)UnknownSouth Pacific Ocean: 57°11’S,2297 mSchultz115°03’W–57°57’S, 115°03’W(1977)11UnknownSouth Pacific Ocean: 58°54’S,1336 mSchultz99°18’W–58°57’S, 99°30’W(1977)11UnknownSouthern Ocean: 60°14’S,1080 mSchultz94°49’W–60°18’S, 95°05’W(1977)11UnknownSouthern Ocean: 60°17’S,2379 mSchultz110°15’W–60°26’S, 110°38’W(1977)11UnknownSouthern Ocean: 61°57’S,1144 mSchultz102°31’W–61°44’S, 102°42’W(1977)11UnknownSouthern Ocean: 68°15’S,1098 mSchultz114°42’W–68°32’S, 114°16’W(1977)11Ho. fusiformisLucensosergia lucensNorth-eastern Taiwan: Yilan80–120 mHuang et al.Shiino, 1937(Hansen, 1922)county, Guishan Island off(2018)13Toucheng, 24°48’N, 121°56’ELucensosergia lucensJapan: Kyushu, west of Naka-380–386 mHuang et al.(Hansen, 1922)Kasayama Bank off Nagasaki,(2018)32°12.504’N, 128°56.631’EPrehensilosergia prehensilisJapan: Sizuoka Prefecture,UnknownShiino (1937) 14(Spence Bate, 1881)Sizuoka (former town ofKanbara)*Sergia laminataJapan: Suruga Bay, 34°51’51”N,1600 mShimomura et(Burkenroad, 1940)138°38’03”Eal. (2020)Ho. truncatusUnknownSouthern Ocean: 62°04’S,915 mSchultz (1977)(Schultz, 1977)75°18’W–61°52’S, 75°14’W*UnknownSouth Pacific and Southern–SchultzOceans(1977)15Ho. polyandrusUnknownSouth Pacific Ocean: 35°16’S,275 mSchultz (1978)(Schultz, 1978)124°57’W*Ho.UnknownChile: off Viña del Mar, 33°08’S,175–185 mSchultz (1978)quadratahumerale72°43’W*(Schultz, 1978)Ho. septapodusUnknownSouth Pacific Ocean: 42°13’S,850–1350 mSchultz (1978)(Schultz, 1978)134°28’W*Ho. citriformis sp.Hymenodora glacialisArctic Ocean: 89°0.62’N,0–4300 m w.This papernov.(Buchholz, 1874)61°26.15’E*Ho. sp.16Parapasiphae sulcatifronsBear Seamount: 39°57.63’–1625 mBoyko &Smith, 188439°55.32’N, 67°33’–67°19.78’WWilliams(2021b)
1 As Ho. californiensis Richardson, 1908 —synonymized by Butler (1964).
2 As Hypodajus georgiensis Nierstrasz & Brender à Brandis, 1931 [synonymized by Butler (1964)].
3 Richardson (1905a) reported three females from two different localities but did not specify which of these specimens the illustrations were based on. Since no holotype was fixed all specimens of the type series are automatically syntypes (cf. Butler, 1964: 971) and the type locality encompasses all of their respective places of origin (ICZN Art. 73.2.3).
4 Richardson (1908) listed the host as Gennadas borealis Rathbun, 1902. Gurjanova (1936: 260) included this record in her checklist of Bering Sea isopods. Nagler et al. (2020: table 1) erroneously cited Gurjanova as the source for records of Ho. giardi associated with Bentheogennema borealis (Rathbun, 1902) at 2000 m depth in the Bering Sea, the Yellow Sea (note that Gurjanova provided a checklist for the Sea of Japan, not the Yellow Sea) and the Sea of Okhotsk; the species has as yet not been recorded from the latter two seas.
5 Female specimen originally identified as ‘ Holophryxus sp. (Ho. Richardi Koehler?)’; identification subsequently corroborated by Stephensen (1915).
6 The host was listed as Sergestes arcticus Krøyer, 1855.
7 All specimens were found free but the likely host, Eusergestes arcticus, was reported from the same station or trawl.
8 Nagler et al. (2020: table 1) lists a record of Ho. richardi associated with Sergestes arcticus from 2500 m depth at 31°40’N, 36°55’W and mistakenly attributed it to Gurjanova (1932); there is no doubt that this is a duplication of Koehler’s (1911) record which is also listed by Nagler et al. (2020) but without mention of the host.
9 Type host originally identified by Stephensen (1912) as Acanthephyra purpurea A. Milne Edwards, 1881 but later corrected to Acanthephyra multispina Coutière, 1905 by Stephensen (1913); the latter is a junior subjective synonym of A. pelagica (see Wasmer, 1986).
10 Although the host of I. concavus was unknown to Schultz (1977), the discovery of marks from the mandibles and pereopods [similar to those reported on the type host of Ho. acanthephyrae by Stephensen (1912)] on one of the specimens from the type locality led Wasmer (1988) to suggest that the host is likely to be A. pelagica.
11 Isopod name cited as the junior subjective synonym I. concavus Schultz, 1977 (cf. Wasmer, 1988).
12 Listed as ‘branchial parasite’ by Chace (1947: 12).
13 Boyko & Williams (2021b: 116) stated that the sampling coordinates of the specimens collected by Huang et al. (2018) were wrong. Huang et al. (2018) in fact provided the correct coordinates but listed the incorrect ones when describing the position of the Yilan sakura shrimp fishing ground on Guishan Island.
14 The host was listed as Sergestes prehensilis Spence Bate, 1881.
15 In addition to the type locality (Stn 10-835), Schultz (1977) recorded the species from another 17 stations (sampled during seven cruises) in the South Pacific and Southern Oceans (10-779, 10-782, 10-811, 11-900, 11-917, 11-918, 13-1120, 13-1129, 14-1186, 14-1204, 15-1302, 15-1303, 17-59-22, 17-69- 28, 17-77-32, 19-1456, 19-1463). For coordinates and depth data see Schultz (1977: 123–127).
16 Based on a juvenile female specimen; possibly conspecific with either of the known Atlantic species (Ho. acanthephyrae, Ho. richardi) or representing an undescribed species (cf. Boyko & Williams 2021b).
description: Published as part of Huys, Rony, Savchenko, Alexandra S. & Kosobokova, Ksenia N., 2023, Discovery of a new species and host record of Holophryxus Richardson, 1905 (Isopoda: Dajidae) from the central Arctic: a model of enhanced descriptive standards for epicaridean isopods, pp. 597-599 in Zoological Journal of the Linnean Society 198 (2) on page 597, DOI: 10.1093/zoolinnean/zlac105, http://zenodo.org/record/8011009