Hydroids (Cnidaria, Hydrozoa) from Guinea Bissau Author Gil, Marta 0000-0002-8985-332X Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar e Centro de Investigación Mariña (CIM-Uvigo), Universidade de Vigo. Campus Lagoas-Marcosende. 36310 Vigo. Spain & martag @ uvigo. gal; https: // orcid. org / 0000 - 0002 - 8985 - 332 X martag@uvigo.gal Author Ramil, Fran 0000-0002-9146-8201 Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar e Centro de Investigación Mariña (CIM-Uvigo), Universidade de Vigo. Campus Lagoas-Marcosende. 36310 Vigo. Spain & Departamento de Ecoloxía e Bioloxía Animal, Facultade de Ciencias do Mar e Centro de Investigación Mariña (CIM-Uvigo), Universidade de Vigo. Campus Lagoas-Marcosende. 36310 Vigo. Spain & framil @ uvigo. gal; https: // orcid. org / 0000 - 0002 - 9146 - 8201 * Corresponding author framil@uvigo.gal text Zootaxa 2025 2025-01-29 5577 1 1 89 https://doi.org/10.11646/zootaxa.5577.1.1 journal article 10.11646/zootaxa.5577.1.1 1175-5334 14763362 A5924C49-3957-4A8A-BD8E-D0FE741D6B1F Aglaophenia lophocarpa Allman, 1877 Aglaophenia lophocarpa Allman, 1877: 41 , pl. 24 figs 1–4.— Svoboda, 1979: 82–86 , figs 12E, 13E, 15E, 16E.— Svoboda & Cornelius, 1991: 22–23 , fig. 5.— Ramil & Vervoort, 1992a: 93–94 , fig. 23B–C.— Ansín Agís et al. , 2001: 40–48 , figs 22–25.— Peña Cantero & García Carrascosa, 2002: 88–89 , fig. 17D. Material examined. BISSAU-0810, stn BS132, 11º31'33"N , 17º14'07"W , depth unknown, 23-X-2008 : four colonies without corbulae, 23–48 mm , substrate unknown. BISSAU-0810, stn BS133, 11º29'17"– 11º28'26"N , 17º15'14"– 17º15'14"W , 733–737 m , 23-X-2008 : two colonies without corbulae growing on worm tubes. BISSAU-0810, stn BS147, 11º08'35"– 11º08'27"N , 17º11'31"– 17º10'37"W , 186–306 m , 26-X-2008 : six colonies with corbulae, 59–82 mm high, of which one growing on a worm tube. BISSAU-0810, stn BS152, 10º31'12"– 10º30'19"N , 17º12'34"– 17º12'32"W , 300–305 m , 27-X-2008 : 101 colonies (two with corbulae), 24–153 mm high, most of them detached from the substrate, but three of them growing on Diphasia digitalis , three on Lytocarpia myriophyllum and one on a worm tube. BISSAU-0810, stn BS157, 10º19'36"– 10º18'44"N , 17º10'29"– 17º10'12"W , 304–308 m , 28-X-2008 : 20 colonies (five with corbulae), 15–83 mm high, of which two growing on worm tubes, one on Diphasia margareta and one on Aglaophenia tubulifera . Remarks. Aglaophenia lophocarpa is a well-known species in Northwest Africa and needs no further comment. Biology . This species has been found growing on a wide variety of substrates ( Peña Cantero & García Carrascosa 2002 ; Vervoort 2006 ; Gil et al. 2020 ). In the northern hemisphere, gonothecae have been found throughout the year ( Ansín Agís et al. 2001 ; Gil & Ramil 2017a ). Our colonies were found growing on worm tubes and other hydroid species. Corbulae were observed in October. Distribution. Aglaophenia lophocarpa is a species with an amphi-Atlantic distribution ( Ansín Agís et al. 2001 ) and a wide bathimetric distribution, from 0–2700 m depth ( Ansín Agís et al. 2001 ; Vervoort 2006 ). In West Africa, it has been collected from Morocco ( Ramil & Vervoort 1992a ) to Gabon ( Gil & Ramil 2021a ). Our material was collected at depths between 23–737 m .