Prociphilus oriens

Japanese: トドノネオオワタムシ（英語表記）Prociphilus oriens

An insect of the Hemiptera family, Aphididae. This aphid is found from the Far East to Southeast Asia, with a body length of 4 to 5 mm, its abdomen is covered in a white cotton-like secretion, and the rest of its body appears dark gray. In spring, it gathers in colonies on the young branches and leaves of the Japanese ash, causing the leaves to shrivel up. In early summer, it flies away from the Japanese ash and migrates to the roots of Japanese ash. This is where its Japanese name, Todonone, comes from. It breeds underground during the summer, and emerges above ground again in late autumn to return to the Japanese ash. The summer generation can parasitize Japanese ash seedlings planted for afforestation, causing damage.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

半翅目タマワタムシ科の昆虫。極東から東南アジアに分布するアブラムシで，体長4～5mm，腹部は白色綿状の分泌物に包まれ，その他の部分は暗灰色に見える。春はヤチダモの若枝や葉に群生して，葉を縮らせる。初夏にヤチダモを飛び去り，トドマツの根に移住する。和名のトドノネはこれに由来する。夏の間地下で繁殖し，晩秋に再び地上に出てヤチダモに帰る。夏の世代が造林のために植栽されたトドマツの苗木に寄生して，被害を出すことがある。

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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