Garveia nutans Wright, 1859

Gil, Marta & Ramil, Fran, 2025, Hydroids (Cnidaria, Hydrozoa) from Guinea Bissau, Zootaxa 5577 (1), pp. 1-89 : 14

Garveia nutans Wright, 1859

Garveia nutans Wright, 1859: 109–110 , pl. 8 fig. 5.— Ramil & Vervoort, 1992a: 15–16.— Schuchert, 2007: 251–253, fig. 21.— Schuchert, 2012: 222–223, fig. 208.

Material examined. BISSAU-0810, stn BS191, 10º18'25"– 10º19'20"N, 16º08'47"– 16º08'47"W, 24–25 m, 3-XI-2008: 45 colonies (all without gonophores), of which 19 growing on Idiellana pristis , four on Diphasia digitalis , two on Tridentata loculosa , one on an unidentified hydroid, and four on bryozoans.

Remarks. Our material agrees well with those described by Ramil & Vervoort (1992a) from the Strait of Gibraltar and by Gil et al. (2020) from coral mounds of Mauritania, and no further discussion is necessary. Our finding represents also the first record of G. nutans for Guinea-Bissau.

Biology. This species has been found growing on various hard substrates, stones, algae, other hydroids, Madrepora oculata Linnaeus, 1758 , and on Acesta excavata (J. C. Fabricius, 1779) ( Schuchert 2007; Gil et al. 2020). Colonies with gonophores have been found between February and December in the northern hemisphere ( Schuchert 2012; Gil & Ramil 2017a; Gil et al. 2020).

Our colonies were found growing on other hydroid species and bryozoans. No fertile material was observed.

Distribution. Garveia nutans has a circumglobal distribution in boreal and temperate regions ( Ramil & Vervoort 1992a; Bouillon et al. 2006) and, in West Africa, it was only recorded from Mauritania ( Gil & Ramil 2017a; Gil et al. 2020). Its bathymetric distribution ranges between 0 ( Schuchert 2007, 2012) and 1339 m ( Gil & Ramil 2017a).

Our material was collected at depths between 24–25 m.