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Hebella scandens

Hebella scandens

(Bale, 1888) Bale, 1888

GBIF:127669446

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Descriptions(3)

Remarks. The somewhat proximally swollen hydrothecae, tapering gradually towards a slightly everted aperture, provided basally with a thick diaphragm, as well as the large gonothecae with a four-flapped operculum, suggest that we are most probably dealing with Bale’s (1888) species. The cnidome, although quite difficult to observe in this rather scarce material, seems to be indistinguishable from that described earlier by one of us (Galea 2013). The Chilean specimens examined by Leloup (1974), although of similar size, show hydrothecae curved basally to a varying extent, a feature possibly resulting from their epizootic habit.
Galea, Horia R., Schories, Dirk, Försterra, Günter, Häussermann, Verena (2014): New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile. Zootaxa 3852 (1): 1-50, DOI: 10.11646/zootaxa.3852.1.1
Distribution in Chile. Calbuco Channel, Reloncaví Sound [Leloup 1974, as H. calcarata (L. Agassiz, 1862)], Los Gemelos, and Canal Williams (present records). World records. Circumglobal (Millard 1975), except for polar seas.
Galea, Horia R., Schories, Dirk, Försterra, Günter, Häussermann, Verena (2014): New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile. Zootaxa 3852 (1): 1-50, DOI: 10.11646/zootaxa.3852.1.1
Material examined. HF 9, Los Gemelos, lat. - 54.91942, long. - 67.36308, 15. xii. 2010, 12.6 m, sample C 130: sterile colony on Synthecium protectum Jäderholm, 1903 (MHNG-INVE- 83256). HF 11, southern exit of Canal Williams, lat. - 45.60000, long. - 74.46667, 19. xi. 2011, 8.9 m, sample C 009: fertile colony on S. protectum (MHNG-INVE- 86257).
Galea, Horia R., Schories, Dirk, Försterra, Günter, Häussermann, Verena (2014): New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile. Zootaxa 3852 (1): 1-50, DOI: 10.11646/zootaxa.3852.1.1

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CLASSIFICATION

Taxonomic Classification Tree

AnimaliaCnidariaHydrozoaLeptothecataHebellidaeHebellaHebella scandens

MULTIMEDIA

Media Files(2)

FIGURE 1. A, B: Hebella cf. scandens (Bale, 1888) — hydrotheca (A); gonotheca (B). C ‒ D: Hebella striata Allman, 1888 — hydrotheca (C); gonotheca (D). E, G, H: Phialella? falklandica Browne, 1902 — portion of erect stem (E) compared with that of P. quadrata (Forbes, 1848) (F); gonotheca seen laterally (G) and apically (H), compared with those of P. quadrata (I, stolonal; J, borne of stem). K, L: Silicularia? bilabiata (Coughtrey, 1876) — two hydrothecae (K); female gonotheca (L). M ‒ O: Silicularia rosea Meyen, 1834 — two hydrothecae (M) compared with specimens from Tristan da Cunha assigned to S. hemisphaerica (Allman, 1888) (P); female (N) and male (O) gonothecae, compared to homologous gonothecae (Q and R, respectively) from Tristan. S: Halecium corrugatissimum Trebilcock, 1828 — small stem with female gonotheca. Scale bars: 300 µm (A, B, E, F, S), 500 µm (C, D, G ‒ J), and 1 mm (K ‒ R).

Imageimage/png© Galea, Horia R.;Schories, Dirk;Försterra, Günter;Häussermann, VerenaGalea, Horia R.;Schories, Dirk;Försterra, Günter;Häussermann, Verena

FIGURE 2. A, B: Halecium flexile Allman, 1888 — portion of stem (A) compared with H. balei Fraser, 1911 (C); detail of hydrophore and renovated hydrotheca (B), and comparison with H. balei (D). E, F: Halecium humeriformis sp. nov. — stem fragments (E); hydrophore and renovated hydrotheca (F). G, H: Halecium maximum sp. nov. — stem fragments (G); hydrophore and renovated hydrotheca (H). I ‒ L: Halecium modestum sp. nov. — stem fragments (I ‒ K); hydrophore with hydrotheca (L). M, N: Halecium platythecum sp. nov. — stem fragment (M); hydrophore and renovated hydrotheca (N). Scale bars: 300 µm (B, D, F, H, L, N) and 1 mm (A, C, E, G, I ‒ K, M).

Imageimage/png© Galea, Horia R.;Schories, Dirk;Försterra, Günter;Häussermann, VerenaGalea, Horia R.;Schories, Dirk;Försterra, Günter;Häussermann, Verena

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Source Information

New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile

checklist

This dataset contains the digitized treatments in Plazi based on the original journal article Galea, Horia R., Schories, Dirk, Försterra, Günter, Häussermann, Verena (2014): New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile. Zootaxa 3852 (1): 1-50, DOI: 10.11646/zootaxa.3852.1.1

Abstract

A large collection of shallow-water hydroids from various Chilean provinces, ranging from Taltal (25° S) in the North, to the Strait of Magellan (53° S) in the South, was studied, and a total of 30 species are discussed in the present report. Of these, eleven are new to science: Candelabrum valdiviensis, Halecium erratum, H. humeriformis, H. maximum, H. modestum, H. platythecum, Hydrodendron chilense, Sertularella asymmetra, S. curta, S. pauciramosa, and Symplectoscyphus semper. The nominal species Halecium flexile Allman, 1888, included for many decades in the synonymy of H. delicatulum Coughtrey, 1876, is resurrected based on distinctive features displayed by its newly discovered female gonothecae. A thorough discussion is provided on several morphologically related species of the genus from various localities around the world, and data on the nematocyst complement are emphasized, allowing the distinction of an as yet undescribed species, H. tristaniensis, from Tristan da Cunha, South Atlantic, and the resurrection of H. balei Fraser, 1911 from southern Australia. Halecium tehuelchum (d’Orbigny, 1842), a poorly known species considered as of doubtful validity, is redescribed based on fertile material of both sexes. A discussion on the taxonomy of several members of the genus Hydrodendron Hincks, 1874, including the first comprehensive account of their cnidome, is provided. The male and female gonothecae of Halopteris plumosa Galea & Schories, 2012 are described for the first time. A discussion on the genus Silicularia Meyen, 1834 is provided, and three subantarctic species are provisionally recognized based on the material in hand, viz. S. bilabiata (Coughtrey, 1875), S. rosea Meyen, 1834, and S. hemisphaerica (Allman, 1888). Four hydroids are new records for Chile: Halecium corrugatissimum Trebilcock, 1928, Parascyphus simplex (Lamouroux, 1816), Symplectoscyphus unilateralis (Lamouroux, 1824), and Aglaophenia divaricata Busk, 1852, the last two being accompanied by comments on their synonymy. Two additional hydroids are only tentatively identified, viz. Hebella cf. scandens (Bale, 1888) and the allusive benthic stage of Phialella falklandica (Browne, 1902).

Key words: Hydrozoans, taxonomy, new species, South America, southeastern Pacific

Galea H R, Schories D, Försterra G, Häussermann V, plazi (2014). New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile. Plazi.org taxonomic treatments database. Checklist dataset https://doi.org/10.11646/zootaxa.3852.1.1 accessed via GBIF.org on 2026-06-18.

CC0Published 12/31/2014View dataset
GBIF Usage Key
127669446
Dataset Key
2fb83006-f93c-4492-aed0-f5f0707f553e
Origin
source
Backbone Key
2268094
Taxon ID
03D92A2C476DFFDDFF5186A15ACAA34A.taxon
Last Crawled
6/11/2026
Last Interpreted
6/11/2026
View on GBIFSource Reference