Gonothyraea loveni ( Allman, 1859 ), Allman, 1859

Watson, Jeanette E., 2011, New species, new records and redescriptions of Thecate hydroids (Cnidaria: Hydrozoa: Leptothecata) from Southern Australia, Zootaxa 3122, pp. 1-36: 30-32

publication ID

http://doi.org/ 10.5281/zenodo.203966

persistent identifier

http://treatment.plazi.org/id/2B61A904-B915-FFE1-18B8-7EAFFB11FBD7

treatment provided by

Plazi

scientific name

Gonothyraea loveni ( Allman, 1859 )
status

 

Gonothyraea loveni ( Allman, 1859)  

Fig. 14 View FIGURE 14 A –D

Laomedea loveni Allman, 1859: 138   .

Gonothyraea loveni   – Linko, 1911: 212, fig. 40.– Ralph, 1957: 824, fig 3g –k.– Millard, 1975: 224, fig. 74 A –F.– Cornelius, 1982: 92, fig. 15.– Cornelius & Ryland, 1990: 131, fig. 4.12.– Cairns et al., 1991: 23.– Cornelius, 1995 b: 262, fig. 60.– Vervoort & Watson, 2003: 422.

Obelia loveni   – Naumov, 1960: 264, figs 16 i, 152.

Calycella parkeri Hilgendorf, 1898: 205   pl. 17, figs 3, 3 a –d, pl. 18.

Gonothyraea parkeri   – Bale, 1924: 231.

Gonothyraea hyalina Hincks, 1868: 184   , pl. 35, fig. 2.– Hodgson, 1950: 5, fig. 10.

Material examined. NMV F 171373, microslide, colony Port Phillip Heads, on sponge, depth 16 m, coll: J. Watson, 24 /07/ 1992. Material in author’s collection: Halibut oil drilling platform, Bass Strait, colony on barnacle, 10 m, June 1975.

Description. Single pedicellate hydrothecae and erect stems arising from a hydrorhiza creeping on substrate. Hydrorhizal stolons tubular, smooth, perisarc thin, some enclosing sponge spicules. Longer stems monosiphonic, to 6 mm high, junction of stem and hydrorhiza with 9–10 deep annulations; stems with 4–6 widely spaced alternate pedicels, stem internodes long, annulated at base with up to 10 deep rings.

Hydrotheca terminal on a short pedicel held at an acute angle of c. 35 ° from stem, a slight thickening at junction of stem with pedicel; pedicels annulated throughout. Hydrotheca conical, somewhat variable in length and width, walls smooth, expanding evenly from base to margin, basal chamber distinct, rectangular to quadrangular in shape, merging smoothly into hydrotheca, distal wall of basal chamber a thickened transverse or slightly concave rim, a ring of desmocytes above. Margin of hydrotheca dentate with 10–12 shallow castellated cusps, each cusp shallowly indented.

Hydrorhiza, diameter 200–220

Stem

internode diameter 120–144 distance between pedicels 800–1060

Pedicel

Length 280–448 Diameter 80–112

Hydrotheca

length, diaphragm to margin 480–704 width at diaphragm 128–344 width at margin 352–400 basal chamber, depth 72–88

Marginal cusp

Depth 28–40 width of embayment 44–48 Remarks. This material was originally identified as Obelia bidentata   by Watson (1994) but re –examination of the hydrothecal rim shows the cusps to be castellated, not sharply bimucronate as in that species. Hodgson (1950) gave dimensions of G. l o v e n i from the Derwent River estuary but his measurements are difficult to interpret since there is no way of relating the aspects of the hydrotheca to actual measurements. The present material agrees in general with Hodgson’s description of Australian material and that of Ralph (1957) and Vervoort & Watson (2003) for material from New Zealand.

Distribution. Cosmopolitan in littoral temperate zone. The depth record of 10–16 m is unusual.

NMV

Museum Victoria

Kingdom

Animalia

Phylum

Cnidaria

Class

Hydrozoa

Order

Leptothecata

Family

Campanulariidae

Genus

Gonothyraea

Loc

Gonothyraea loveni ( Allman, 1859 )

Watson, Jeanette E. 2011
2011
Loc

Obelia loveni

Naumov 1960: 264
1960
Loc

Gonothyraea parkeri

Bale 1924: 231
1924
Loc

Gonothyraea loveni

Vervoort 2003: 422
Cornelius 1995: 262
Cairns 1991: 23
Cornelius 1990: 131
Cornelius 1982: 92
Millard 1975: 224
Ralph 1957: 824
Linko 1911: 212
1911
Loc

Calycella parkeri

Hilgendorf 1898: 205
1898
Loc

Gonothyraea hyalina

Hodgson 1950: 5
Hincks 1868: 184
1868
Loc

Laomedea loveni

Allman 1859: 138
1859