Eudendrium cf. nambuccense Watson, 1985

Galea, Horia R., 2007, Hydroids and hydromedusae (Cnidaria: Hydrozoa) from the fjords region of southern Chile, Zootaxa 1597 (1), pp. 1-116 : 26

publication ID	https://doi.org/ 10.11646/zootaxa.1650.1.4
publication LSID	lsid:zoobank.org:pub:BF519BEF-877B-4DFB-A2FA-87710CC7F92B
persistent identifier	https://treatment.plazi.org/id/7F5A8787-BF5A-FF9E-FF0E-FB8F996BF86A
treatment provided by	Felipe
scientific name	Eudendrium cf. nambuccense Watson, 1985
status

Treatment

Eudendrium cf. nambuccense Watson, 1985 View in CoL View at ENA

(fig. 7C, D)

Eudendrium nambuccense Watson, 1985: 185 View in CoL , figs 9–16.

Material examined. Stn. CCO — 09.iii. 2006, 18 m, S144: small, sterile colonies, epizoic on Synthecium robustum ( MHNG INVE 53644).

Type locality. Nambucca Heads , New South Wales, Australia .

Description. Creeping, branching, anastomozing stolon; colony small, composed of several hydranths and no gonophores; epizoic on colony of Synthecium robustum . Hydranths arising at irregular intervals from stolon; borne on pedicels ringed basally or irregularly throughout their length. Some erect, loosely branched stems also present; side branches with ringed perisarc basally. Hydranths with ca 18 filiform tentacles. Cnidome:

a) small microbasic mastigophores on tentacles, undischarged (5.6–6.0) x (2.3–2.8) µm;

b) larger microbasic mastigophore in a ring around lower part of hydranth body, undischarged (7.9–8.4) x (2.8–3.2) µm.

Remarks. Although sterile, the present material agrees well with the description of this species by Watson (1985), especially regarding the nematocyst complement. In her Australian material, Watson (1985) found capsules ranging between (5.0–9.0) x (2.0–3.5) µm, but pointed out the fact that they fall into two fairly distinct groups within this size range, the larger capsules being always associated with the nematocyst ring (and the gonophores), while the smaller ones are found in the tentacles. Minor differences in size were equally observed between samples from different localities ( Watson 1985).

The gonophores of E. nambuccense were described by Watson (1985).

World distribution. Reported only from eastern and southeastern Australia ( Watson 1985).

Records from Chile. This species was collected from one station, Canal Copihue. Another record is from Juan Fernández Islands (Dr. S. Puce, personal communication).