2020 年 29 巻 p. 25-27
Tachaea chinensis (Isopoda: Corallanidae) is an ectoparasitic isopod that is sporadically reported from East Asia. Freshwater prawns and shrimps are characteristic hosts. Two specimens of unidentified crustacean collected at Lake Kasumigaura in 1915 were identified as T. chinensis. The specimens were originally kept at the Center for Ecological Research, Kyoto University and are now maintained at the Kyoto University Museum. To the best of my knowledge, these two specimens represent the oldest example of T. chinensis in Japan. The specimens are assumed to have been collected by N. Annandale. Other specimens collected at the same time were entrusted to W.M. Tattersall and reported in 1921. The specimens, collected over 100 years ago, are important in understanding biodiversity and environmental changes.