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Halecium erratum

Halecium erratum

Galea, Forsterra, Haussermann & Schories

GBIF:127669477

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Synonyms

ABOUT

Descriptions(4)

Remarks. Since the first specimens were described by some of us (Galea et al. 2007) under the specific name H. fraseri Ralph, 1958, new material was gathered and additional literature sources became available to us. Ralph (1958) assigned the new name H. fraseri to a hydroid apparently misidentified as H. flexile in a series of papers by Fraser (1914, 1937, 1944, 1946, 1948), its area of occurrence being mainly the Pacific coast of North America (Fraser 1937, 1948), with an additional record from a locality in the northwestern Atlantic (Fraser 1944). From the descriptions available for the North American species, it is realized that it exhibits some features that are not met with in our Chilean material, and these are listed in Table 3. Consequently, our material is considered as belonging to an undescribed species, and the new name H. erratum is proposed for it.
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. Fjord Piti Palena (Galea et al. 2007) and South of Puerto Montt (present record). World records. Not known from elsewhere.
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
Etymology. The specific name borrows the Latin noun erratum, with reference to an earlier, erroneous assignment of this species to another taxon.
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 4, Fjord Piti Palena, Raul Marin, lat. - 43.77517, - 72.87843, 09. iii. 2007, 15 – 20 m, sample 1461: a female colony (holotype: MHNG-INVE- 54634); sample 1465: a male colony (paratype: MHNG-INVE- 86144). Caleta La Arena, Caleta Yerbas Buenas, lat. - 41.67263, long. - 72.65650, 11. vii. 2010, 30 m, sample 04: a 15 cm high, female colony (MHNG-INVE- 79659); 12. vii. 2010, 40 – 47 m, sample 06: two sterile colonies, 18 and 20 cm high, respectively (MHNG-INVE- 79658); 07. x. 2011, 40 m, sample 01: a 14 cm high, sterile colony (MHNG-INVE- 86258).
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

AnimaliaCnidariaHydrozoaLeptothecataHaleciidaeHaleciumHalecium erratum

NOMENCLATURE

Synonyms(1)

Halecium fraseriRalph, 1958
synonym

MULTIMEDIA

Media Files(2)

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

FIGURE 8. A ‒ D: Symplectoscyphus unilateralis (Lamouroux, 1824) — stem fragment (A); hydrotheca (B); gonotheca in frontal (C) and lateral (D) views. E ‒ H: Symplectoscyphus sp. — colony fragment (E); hydrotheca in lateral (F) and apical (G) views; gonotheca (H). I, J: Staurotheca jaederholmi Stechow, 1920 — colony fragment (I); gonothecae (J). K ‒ M: Parascyphus simplex (Lamouroux, 1816) — stem fragment (K); hydrotheca (L) and detail of aperture (M). N, O: Halopteris plumosa Galea & Schories, 2012 a—female (N) and male (O) gonothecae. Scale bars: 200 µm (A, B, F, G), 300 µm (C, D, L ‒ O), 500 µm (H, K), 1 mm (E, I, J).

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
127669477
Dataset Key
2fb83006-f93c-4492-aed0-f5f0707f553e
Origin
source
Backbone Key
7416237
Taxon ID
03D92A2C4762FFD3FF5187055BB4A46A.taxon
Last Crawled
6/11/2026
Last Interpreted
6/11/2026
View on GBIFSource Reference