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Gymnangium expansum

Gymnangium expansum

(Jaderholm, 1903)

GBIF:167407455

0year

ABOUT

Descriptions(3)

Remarks This species was recently dealt with by Galea (2020).
Galea, Horia R., Maggioni, Davide (2020): Plumularioid hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program. European Journal of Taxonomy 708: 1-58, DOI: 10.5852/ejt.2020.708
Distribution Scattered records from the tropical and subtropical Indian and Pacific oceans, from Zanzibar to New Caledonia (Galea 2020).
Galea, Horia R., Maggioni, Davide (2020): Plumularioid hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program. European Journal of Taxonomy 708: 1-58, DOI: 10.5852/ejt.2020.708
Material examined PACIFIC OCEAN • 1 ca 17 cm high, fully fertile colony; off New Caledonia, stn DW 4768; 23 ° 25 ′ S, 168 ° 01 ′ E; 180 – 210 m; 27 Aug. 2016; KANACONO leg.; barcode identifier MT 655148; MNHN-IK- 2015 - 580.
Galea, Horia R., Maggioni, Davide (2020): Plumularioid hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program. European Journal of Taxonomy 708: 1-58, DOI: 10.5852/ejt.2020.708

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CLASSIFICATION

Taxonomic Classification Tree

AnimaliaCnidariaHydrozoaLeptothecataAglaopheniidaeGymnangiumGymnangium expansum

Occurrences with images

Source Information

Plumularioid hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program

checklist

This dataset contains the digitized treatments in Plazi based on the original journal article Galea, Horia R., Maggioni, Davide (2020): Plumularioid hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program. European Journal of Taxonomy 708: 1-58, DOI: 10.5852/ejt.2020.708

Abstract. This study reports on 25 species of hydroids occurring in the collections gathered during KANACONO and KANADEEP expeditions carried out in the SE of New Caledonia in 2016, and off the western coast of the island in 2017, respectively. Of these, 19 have not been dealt with in earlier reports on these collections. Two new genera and four new species are described, viz, Actinopluma mirifica Galea gen. et sp. nov., provisionally assigned to the family Kirchenpaueriidae Stechow, 1921, Schizoplumularia helicoidalis sp. nov., belonging to the Plumulariidae McCrady, 1859, and Corhiza patula Galea sp. nov. and Thamnopteros uniserius Galea gen. et sp. nov., both placed in the family Halopterididae Millard, 1962. The gonotheca and the medusoid gonophore of Plumularia contraria Ansín Agís et al., 2014 are described for the first time, allowing a genus transfer to Dentitheca Stechow, 1919, as D. contraria comb. nov. Plumularia conjuncta Billard, 1913, known earlier from a minute portion of colony, is redescribed based on a complete, though infertile, specimen. Similarly, complete specimens corresponding to the hydroid previously referred to as Antennella megatheca Ansín Agís et al., 2009 are documented, allowing a provisional reallocation to Corhiza Millard, 1962 and a description of its so far unknown gonothecae. Fertile material assignable to the poorly-known Monostaechas fisheri Nutting, 1905 allows the recognition of this hydroid as a valid species, distinct from M. quadridens (McCrady, 1859). Most taxa are illustrated to validate the reliability of their identifications. Finally, phylogenetic reconstructions of the families Aglaopheniidae, Plumulariidae, and Halopterididae, based on the 16S rRNA, allowed a first genetic characterization of some of the species dealt with in this work.

Galea H R, Maggioni D, valdenar (2020). Plumularioid hydroids (Cnidaria: Hydrozoa) from off New Caledonia collected during KANACONO and KANADEEP expeditions of the French Tropical Deep-Sea Benthos Program. European Journal of Taxonomy. Checklist dataset https://doi.org/10.5852/ejt.2020.708 accessed via GBIF.org on 2026-06-18.

CC0Published 8/26/2020View dataset
GBIF Usage Key
167407455
Dataset Key
0c523d70-0815-45f8-a69d-1698f78a0998
Origin
source
Backbone Key
2267203
Taxon ID
03D92045FF8DFFF2E60427BFC1B6F81B.taxon
Last Crawled
6/10/2026
Last Interpreted
6/10/2026
View on GBIFSource Reference