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Issue: Vol. 5693 No. 1: 16 Sept. 2025
Type: Article
Published: 2025-09-16
DOI: 10.11646/zootaxa.5693.1.7
Page range: 107-124
Abstract views: 52
PDF downloaded: 0

Cladocoryne spongicola, a new species of tropical, sponge-associated athecate hydroid (Cnidaria: Hydrozoa)

Hydrozoan Research Laboratory; 405 Chemin Les Gatiers; 83170 Tourves; France
Universitas Udayana; Graduate School of Marine Science; Kampus Bukit Jimbaran; 80361 Bali; Indonesia
Università degli Studi di Milano-Bicocca; Dipartimento di Biotecnologie e Bioscienze; Piazza della Scienza 2; 20126 Milano; Italy; Marine Research and Higher Education (MaRHE) Center; Università degli Studi di Milano-Bicocca; 12030 Faafu Magoodhoo; Maldives
Coelenterata Cladocorynidae integrative taxonomy phylogeny Capitata Demospongiae Petrosiidae

Abstract

A new species of Cladocoryne Rotch, 1871, C. spongicola sp. nov., a hydroid strictly associated to a host demosponge, is described from shallow waters in the NE of the island of Bali, Indonesia. Its cnidome lacks the distinctive elliptic macrobasic euryteles of the substrate generalist C. haddoni Kirkpatrick, 1890, retaining only the elongate counterpart, common to most species of the genus. Its gonophores are eumedusoids with four marginal bulbs, a canal system, and four basal interradial nematocyst pads. A morphological comparison with its congeners is provided. A multilocus (16S, 18S, 28S rRNA and COI) phylogenetic analysis confirms its divergence from C. floccosa Rotch, 1871 and C. haddoni, two of its congeners for which sequence data are available so far.

 

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How to Cite

Galea, H.R., Widiastuti, W. & Maggioni, D. (2025) Cladocoryne spongicola, a new species of tropical, sponge-associated athecate hydroid (Cnidaria: Hydrozoa). Zootaxa, 5693 (1), 107–124. https://doi.org/10.11646/zootaxa.5693.1.7