Ericerus pela

Japanese: イボタロウカイガラムシ（英語表記）Ericerus pela

An insect of the Hemiptera family, Coccidae family. Also known as the Ibota Roe Bug. It is so named because male larvae gather in groups on the twigs of Ibota to create cattail-like wax masses. They are sexually dimorphic, with adult females being wingless and having almost circular, yellowish brown bodies that become almost spherical and about 1 cm in size when mature, with the skin hardening significantly and becoming dark brown. Males become adults with a pair of wings and emerge from the wax mass. They occur widely throughout Japan, as well as in China, the Korean peninsula, and Europe. In addition to Ibota, they parasitize ash trees, Japanese laurels, and other plants.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

半翅目カタカイガラムシ科の昆虫。別名イボタロウムシ。雄の幼虫がイボタの小枝に集団でガマの穂状の蠟塊をつくるのでこの名がある。雌雄異形で，雌成虫は無翅，体はほぼ円形で黄褐色，成熟するとほぼ球形で1cmくらいとなり，体皮は著しく硬化して暗褐色を呈する。雄は1対の翅を備えた成虫となり，蠟塊から脱出する。日本全国に広く発生するほか，中国，朝鮮半島，ヨーロッパにも分布する。イボタのほか，トネリコ，ネズミモチなどに寄生する。

出典　株式会社平凡社世界大百科事典第２版について　情報

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