Nemertesia freiwaldi Gil, Ramil & Ansin-Agís, 2020

Gil, Marta & Ramil, Fran, 2025, Hydroids (Cnidaria, Hydrozoa) from Guinea Bissau, Zootaxa 5577 (1), pp. 1-89 : 66

Nemertesia freiwaldi Gil, Ramil & Ansin-Agís, 2020

Nemertesia freiwaldi Gil et al., 2020: 442–446 , figs 6–8.

Material examined. BISSAU-0810, stn BS147, 11º08'35"– 11º08'27"N, 17º11'31"– 17º10'37"W, 186–306 m, 26-X-2008: one colony with male and female gonothecae, 42 mm high, substrate unknown.

BISSAU-0810, stn BS152, 10º31'12"– 10º30'19"N, 17º12'34"– 17º12'32"W, 300–305 m, 27-X-2008: two colonies without gonothecae, 30–46 mm high, substrate unknown.

BISSAU-0810, stn BS216, 10º30'53"– 10º31'39"N, 16º31'33"– 16º32'02"W, 56–58 m, 7-XI-2008: one colony without gonothecae, 51 mm high, substrate unknown.

Remarks. This material represents the first record of this species since its description ( Gil et al. 2020), and also the first record for Guinea-Bissau. Our colonies showed hydrorhizal adaptations for anchoring onto soft bottoms, a feature also found in the colonies described from Mauritania ( Gil et al. 2020).

Biology. This species has been found growing on D. pertusum and soft bottoms. In the northern hemisphere, gonothecae have been found in November and December ( Gil et al. 2020).

In our material male and female gonothecae were found in October.

Distribution. Nemertesia freiwaldi has been recorded only from Mauritania, between 405 and 642 m depth ( Gil et al. 2020).

Colonies studied herein were collected at depths between 56–306 m.