Leuckartiara octona ( Fleming, 1823 )

Galea, Horia R., 2007, Hydroids and hydromedusae (Cnidaria: Hydrozoa) from the fjords region of southern Chile, Zootaxa 1597 (1), pp. 1-116 : 28-29

Leuckartiara octona ( Fleming, 1823)

(fig. 7H, pl. 1I)

Geryonia octona Fleming, 1823: 299 .

Perigonimus repens: Hincks, 1868: 90 , pl. 16 fig. 2; Hartlaub, 1905: 530, figs L–M; Fraser, 1944: 58, pl. 7 fig. 29.

Leuckartiara octona: Rees, 1938: 12 , figs 3–5; Russell, 1938: 154, figs 41–44; 1953: 188, figs 91–96, pl. 11 figs 5-6, pl. 12 fig. 3; Kramp, 1959: 121, fig. 119; 1961: 105; 1968: 47, fig. 121; Rees & Rowe, 1969: 10; Russell, 1970: 246; Vervoort, 1972a: 17; Fagetti, 1973: 37, pl. 2 fig. D; Millard, 1975: 123, fig. 41A–D; Hirohito, 1988 (English text): 106, fig. 38F–G; Pagès et al., 1992: 10, fig. 11; Ramil & Vervoort, 1992: 21; Migotto, 1996: 16, fig. 3E–G; Ramil et al., 1998a: 186; Schuchert, 2001a: 23; Bouillon et al., 2004: 70, fig. 41D–F; Buecher et al., 2005: 43 .

Perigonimus octonus: Stepanjants, 1979: 11 , pl. 1 fig. 3.

Material examined. Plankton — off the Huinay Scientific Field Station , 07 and 18.ii.2006, 50–0 m, several medusae ( MHNG INVE 49040 ) .

Type locality. Bell Rock , Scotland .

Remarks. Although only the medusa stage was recorded here from fjord Comau, its hydroid probably occurs in the same area. For a description of the hydroid stage, see Rees (1938). More recent descriptions of the hydroid, the newly released and young medusae, are provided by Migotto (1996) and Schuchert (2007). The mature medusa was redescribed by Pagès et al. (1992). Data on the nematocyst complement of medusa are provided by Russell (1938). Medusae in the present material have umbrellas of up to 1.1 cm high and 0.7 cm in maximum diameter.

World distribution. The medusa is widely-distributed in tropical and temperate waters of all oceans ( Pagès et al. 1992). The polyp stage was recorded from England, South Africa ( Schuchert 2001a), Brazil ( Migotto 1996), Strait of Magellan ( Vervoort 1972a), Argentina ( Hartlaub 1905), Falkland Islands ( Hartlaub 1904).

Records form Chile. The hydroid of L. octona was previously reported from the Strait of Magellan ( Hartlaub 1905) and Punta Arenas ( Jäderholm 1916 –1917). The medusa is widely distributed along the entire Chilean coast ( Fagetti 1973, Palma et al. 2007). Medusae in the present material were collected from fjord Comau.