Zygophylax tizardensis Kirkpatrick, 1890

Peña Cantero, Álvaro L. & Marques, Antonio C., 2004, Redescription Of Acryptolaria Normani Nutting, 1927, Junior Synonym Of The Western Pacific Species Zygophylax Tizardensis Kirkpatrick, 1890 (Cnidaria: Hydrozoa: Lafoeidae), Raffles Bulletin of Zoology 52 (1), pp. 1-6 : 4-5

publication ID

https://doi.org/ 10.5281/zenodo.10081418

persistent identifier

https://treatment.plazi.org/id/03FE4E72-FF8C-FFDC-FC65-F928FDA6DFEE

treatment provided by

Carolina

scientific name

Zygophylax tizardensis Kirkpatrick, 1890
status

 

Zygophylax tizardensis Kirkpatrick, 1890

( Fig. 2C View Fig )

Zygophylax tizardensis Kirkpatrick, 1890: 12-13 , Pl. 3 Fig. 3; Jäderholm, 1903: 277; 1919: 10; Clarke, 1907: 16; Stechow, 1913a: 144; 1913b: 11, 117; 1923: 10; Dawydoff, 1952: 56; Yamada, 1959: 48; Hirohito, 1983: 6, 33-34, Fig. 13; 1995: 150, Fig. 47a-d, Pl. 10 Fig. B; Rees & Vervoort, 1987: 66-67; Vervoort, 1987: 91, Fig. 10.9.

Perisiphonia tizardensis - Vanhöffen, 1910: 316.

Acryptolaria normani Nutting, 1927: 209 , Pl. 41 Figs. 1-2 View Fig View Fig .

Material examined. – Zoologische Staatssammlung München ( ZSM – no number) Sta. 362d, Sagami Bay. Doflein 04 (cf. Stechow, 1913b).

Remarks. – Colonies of Z. tizardensis have been reported up to 60 mm high ( Hirohito, 1995), with similar features as described above; the same applies to the hydrothecae ( Fig. 2C View Fig ). However, Hirohito (1995) reported “one nematotheca borne on basal part of each pedicel”, whereas the material described herein has a pair of nematothecae on each hydrothecal pedicel (except that of the basal hydrotheca). The description of Kirkpatrick (1890: 12-13) stated: “sarcothecae numerous,.1 to.4 millim., on tubes composing the main stem and larger branches; a pair at the base of each hydrotheca”. Hirohito’s observation may be incorrect or there is also the possibility that his material represents a variation.

The female gonosome was described by Hirohito (1983: 33- 34, fig. 13b): “Coppinia almost spherical about 5 cm in diameter, developed on branch. Rather a small number of separate gonothecae aggregated into cluster. Gonotheca sacklike, bearing two or three curved opening tubes at distal end. Many protective tubes with nematothecae, branching and anastomosing each other, covering cluster of gonothecae like a canopy.” Hirohito (1995: 150, fig. 47d) stated “Gonosomes borne on stem, consisting of aggregated but not contiguous gonothecae and many branched tubes surrounding gonothecae; tubes bearing nematothecae. Gonothecae pouchlike, with two or three processes at distal end; the processes often twisted, with the apertures facing to various directions. Only female gonothecae containing planulae were observed.”

Distribution. – Zygophylax tizardensis has been reported from depths from 63 ( Kirkpatrick, 1890) to 720 m ( Jäderholm, 1919). It is known from Japanese waters [Sagami Bay ( Stechow, 1913b; Jäderholm, 1919; Hirohito, 1995), off the Bonin Islands ( Jäderholm, 1919) and Izu Oshima and Niijima Islands ( Hirohito, 1983)], from Tizard Reef ( China Sea) ( Kirkpatrick, 1890) and from off the Philippines ( Nutting, 1927 as Acryptolaria normani ).

ZSM

Bavarian State Collection of Zoology

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Lafoeidae

Genus

Zygophylax

Loc

Zygophylax tizardensis Kirkpatrick, 1890

Peña Cantero, Álvaro L. & Marques, Antonio C. 2004
2004
Loc

Acryptolaria normani

Nutting, C 1927: 209
1927
Loc

Perisiphonia tizardensis

Vanhoffen, E 1910: 316
1910
Loc

Zygophylax tizardensis

Rees, W 1987: 66
Vervoort, W 1987: 91
Hirohito 1983: 6
Yamada, M 1959: 48
Dawydoff, C 1952: 56
Jaderholm, E 1919: 10
Stechow, E 1913: 144
Stechow, E 1913: 11
Clarke, S 1907: 16
Jaderholm, E 1903: 277
Kirkpatrick, R 1890: 13
1890
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