Polyplumaria flabellata G.O. Sars, 1874

Gil, Marta & Ramil, Fran, 2025, Hydroids (Cnidaria, Hydrozoa) from Guinea Bissau, Zootaxa 5577 (1), pp. 1-89 : 63-65

Polyplumaria flabellata G.O. Sars, 1874

( Fig. 11A )

Polyplumaria flabellata G.O. Sars, 1874: 101–102 , pl. 2 figs 16–22.— Vervoort, 1966: 134, fig. 37A–D.— Ramil & Vervoort, 1992a: 193–197, fig. 50A–G.— Cornelius, 1995b: 163–164, fig. 38.— Ansín Agís et al., 2001: 248–253, figs 93–94.— Gil et al., 2020: 435 , fig. 12C.

Material examined. BISSAU-0810, stn BS132, 11º31'33"N, 17º14'07"W, 23-X-2008: one colony without gonothecae, 42 mm high, substrate unknown.

BISSAU-0810, stn BS133, 11º29'17"– 11º28'26"N, 17º15'14"– 17º15'14"W, 733–737 m, 23-X-2008: five colonies without gonothecae, 47–125 mm high, of which four growing on worm tubes.

Remarks. Polyplumaria flabellata is a well-known species and requires no further comment. This is the first record of this species for Guinea-Bissau.

Biology. In the northern hemisphere, colonies with gonothecae have been found in March, May–August ( Ansín Agís et al. 2001) and in December ( Gil et al. 2020).

In our material, some colonies were found growing on worm tubes. Gonothecae were not observed.

Distribution. Polyplumaria flabellata is an East Atlantic species with a wide bathymetric distribution, ranging from 47 to 2200 m depth ( Ansín Agís et al. 2001). Its distribution in West Africa has been recently documented by Gil et al. (2020).

Our material was collected at depths between 733–737 m.

Genus Pseudoplumaria Ramil & Vervoort, 1992

Figures

FIGURE 11.A. Polyplumaria flabellata G.O. Sars, 1874(stnBS133), portion of colony with a hydrocladium.B. Pseudoplumaria marocana (Billard, 1930) (stn BS143), portion of hydrocladium. C. Kirchenpaueria pinnata (Linnaeus, 1758) (stn BS147), portion of hydrocladium. D–E. Nemertesia irregularis (stn BS132); portion of hydrocladium (D); female gonotheca (E). F. Nemertesia ventriculiformis (Marktanner-Turneretscher, 1890) (stn BS152), portion of hydrocladium. Scales: a–f, 0.5 mm.