The Second Example of Metamorphosis of the Medusa from the intermedia Form to the Southern Form in Eutima japonica (Leptomedusae, Eirenidae)

Abstract

One typical, mature medusa of the intermedia form of Eutimajaponica from Zagashima Island, Mie Prefecture, developed into the mature medusa of the southern form of this species in the laboratory, as had been observed once before by the author in another population from Tsushima Island, Nagasaki Prefecture. The morphology of this female specimen is described. This second example supports the recently proposed demotion of Eucheilota intermedia to the intermedia form of Eucima japonica.