Campanulina denticulata Clarke, 1907

Gil, Marta & Ramil, Fran, 2021, Hydroids (Cnidaria, Hydrozoa) from the Vema and Valdivia seamounts (SE Atlantic), European Journal of Taxonomy 758, pp. 49-96 : 61-62

Campanulina denticulata Clarke, 1907

Fig. 3F ; Table 4

Campanulina denticulata Clarke, 1907: 12–13 , pl. 8.

Campanulina denticulata – Stechow 1913: 122–123, fig. 92.

Opercularella denticulata – Vervoort 1966: 104–106, figs 4–5.

Material examined

SOUTH ATLANTIC OCEAN • 2 colonies, up to 10 mm high (1 growing on ghost fishing net) and with gonothecae; Valdivia Seamount, stn BT12, 24°49′01″– 24°47′38″ S, 6°24′40″– 6°25′26″ E; 887– 886 m depth; 7 Feb. 2015; SEAFO-2015 leg.; SEAFO-2015-40811, SEAFO-2015-40887.

Remarks

Campanulina denticulata was considered a synonym of Earleria panicula (G.O. Sars, 1874) by several authors ( Leloup 1974; Schuchert 2003), but Calder (2012) suggested that the Atlantic E. panicula is a different species from the Indo-Pacific C. denticulata . The comparison of the material from the Valdivia Seamount with colonies of E. panicula collected in NW Africa showed some morphological differences, and agrees with descriptions of C. denticulata given by Clarke (1907) and Vervoort (1966).

Distribution

Campanulina denticulata has an Indo-Pacific distribution ( Calder 2012). Its bathymetric distribution extends from more than 500 m (Clarke 1970, as Opercularella denticulata ) to 4040 m deep ( Vervoort 1966, as O. denticulata ).

Figures

Fig. 3. A–C. Zygophylax sp. A. Colony. B. Distal part of colony with hydrocladia. C. Part of hydrocladia with two hydrothecae. — D–E. Stegopoma giganteum Ramil & Vervoort, 1992. D. Hydrotheca on pedicel. E. Gonotheca. — F. Campanulina denticulata Clarke, 1907, part of colony ramified with hydrothecae. — G–H. Campanularia africana Stechow, 1923, detail of hydrotheca, lateral view.

Tables

Table 4. Measurements of Campanulina denticulata Clarke, 1907, in µm.

SEAFO-2015 Stn BT12
Diameter of hydrocaulus	110
Length of hydrothecal pedicel	520–980
diameter of hydrothecal pedicel	40–60
Length of hydrotheca	370–480
diameter of hydrotheca	60–90