Diphasia digitalis ( Busk, 1852 )

Gil, Marta & Ramil, Fran, 2025, Hydroids (Cnidaria, Hydrozoa) from Guinea Bissau, Zootaxa 5577 (1), pp. 1-89 : 50

Diphasia digitalis ( Busk, 1852)

Sertularia digitalis Busk, 1852: 393 . Diphasia digitalis : Bale, 1884: 101, Pl. IX figs 3–5.— Nutting, 1904: 110–111, Pl. XXX figs 2–7.— Buchanan, 1957: 365, fig.

20.— Vervoort, 1959: 254–255, fig. 22.— Vervoort, 1968: 37–38, fig. 17.—Millard, 1975: 257–258, fig. 85E.— Schuchert,

2003: 166, fig. 25. non Diphasia digitalis : Vervoort, 1972: 99–101, fig. 29.

Material examined. BISSAU-0810, stn BS191, 10º18'25"– 10º19'20"N, 16º08'47"– 16º08'47"W, 24–25 m, 3-XI-2008: 984 colonies (22 with gonothecae), 10–140 mm high, of which 41 growing on Idiellana pristis , 18 on worm tubes, 12 on bryozoans, five on crustaceans, four on bivalves, three on Tridentata marginata , one on Eudendrium ramosum and one on Halecium lankesteri .

BISSAU-0810, stn BS192, 10º19'30"– 10º20'15"N, 16º10'27"– 16º10'59"W, 24 m, 3-XI-2008: 78 colonies (16 with gonothecae), 15–167 mm high, of which one colony growing on Idiellana pristis and another one on a bryozoan.

BISSAU-0810, stn BS193, 10º21'13"– 10º21'51"N, 16º10'17"– 16º10'56"W, 20–21 m, 3-XI-2008: 12 colonies (one with gonothecae), 25–103 mm high; substrate unknown.

BISSAU-0810, stn BS194, 10º21'59"– 10º22'36"N, 16º13'23"– 16º14'03"W, 21–24 m, 3-XI-2008: 38 colonies without gonothecae, 21–128 mm high, of which four growing on Idiellana pristis and two others on bryozoans.

BISSAU-0810, stn BS195, 10º22'44"– 10º23'22"N, 16º15'37"– 16º16'18"W, 29 m, 3-XI-2008: 28 colonies (one with gonothecae), 27–125 mm high, of which two growing on bryozoans, one on an unidentified hydroid, one on Idiellana pristis , and one on Thyroscyphus marginatus .

BISSAU-0810, stn BS200, 10º18'55"N, 16º25'07"W, 79 m, 4-XI-2008: one colony 62 mm high without gonothecae, substrate unknown.

Remarks. This material was previously included in Gil & Ramil’s (2017b) study of the genus Diphasia from Northwest Africa.