Rediscovery of a rare species Eurhamphaea vexilligera Gegenbaur (Ctenophora, Lobata, Eurhamphaeida) collected from Shirahama, Wakayama Prefecture, Japan after 72 years

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  • 和歌山県白浜町で72年ぶりに採取された稀少種アカダマクラゲ(有櫛動物門, カブトクラゲ目, アカダマクラゲ科)
  • ワカヤマケン シラハママチ デ 72ネン ブリ ニ サイシュ サレタ キショウシュ アカダマクラゲ(ユウグシ ドウブツモン,カブトクラゲモク,アカダマクラゲカ)

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Abstract

Eurhamphaea vexilliger (3.5cm in length of body proper) was collected from Shirahama, Wakayama Prefecture, Japan on September 19, 2012 after 72 years, and morphology and behaviour of this rare species was observed. No“ink injection”was observed except discharge of solution of iodine tincture after cut of oral lobes in which numerous“ink droplets”were found. This specimen had more comb plates (40-50) in a row than the former specimens (c.30) collected from Shirahama in 1940.

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