Eirene viridula ( Péron & Lesueur, 1810 )

Peter Schuchert, 2017, Systematic notes on some leptomedusa species with a description of Neotima galeai n. spec. (Hydrozoa, Cnidaria), Revue suisse de Zoologie 124 (2), pp. 351-375 : 358-359

Oceania viridula Péron & Lesueur, 1810: 346 , English Chan-

nel.

Geryonia pellucida Will, 1844: 70 , pl. 2 figs 8-12.

Geryonopsis delicatula Forbes, 1848: 39 .

Geryonopsis forbesii Van Beneden, 1867: 87 , pl. 3 figs 1-7. ‒

Haeckel, 1879: 202, synonym.

Tima willi Neppi, 1909: 368 , figs 3, 4, 7, 8, 12, 13, 15, 16, 18-

25, 28-45, 47.

Phortis pellucida . – Neppi & Stiasny, 1913: 49.

Perigonimus nudus Stechow, 1919: 16 , fig. D. ‒ Schuchert,

2007: 273, synonym.

Eirene viridula . – Russell, 1953: 321, text. figs. 201-205, pl. 20 figs 3-4. ‒ Kramp, 1959a: 158, fig. 215. – Kramp, 1961: 191. – Kramp,1968: 90, fig. 243. – Cornelius, 1995: 223, fig. 51.

Material examined: Several mature specimens; France, Villefranche-sur-Mer, Mediterranean, 43.686°N 7.317°E, 0 m depth; collection date 04.05.2001; DNA isolate 010; 16S sequence KY363937 . ‒ 1 specimen; France, Normandy, Luc-sur-Mer, English Channel, 49.31985 °N 00.34965°W, 0 m depth; collection date 17.08.2005; DNA isolate 388; 16S sequence FJ550502 , 18S FJ550588 , 28S FJ550445 .

Diagnosis: Umbrella up to 30 mm wide, nearly hemispherical, middle portion fairly thick; peduncle broad, projecting beyond bell margin, shape variable. Velum narrow. 4 radial canals. Stomach fairly small, with four pointed lips and crenulated margin; gonads linear, extending from bell margin to base of peduncle. Up to 70 tentacles of different sizes, large and small frequently alternating, tentacles fine, bulbs conical with distinct adaxial excretory papilla projecting into subumbrella; 50 or more statocysts, each with 1-4 concretions. No cirri. Colourless except for green tinge of manubrium.

Polyp stage see Cornelius (1995).

Distribution: North-western Europe; Mediterranean; west coast of Africa; east coast of Africa; Ceylon, Papua New Guinea. Type locality: English Channel.

References: Russell (1953), Cornelius (1995).