Yakudza vicarius (species of moth)
A species of moth in the family Cossidae; the name is typically written in katakana.
The Yakudza vicarius is a nocturnal moth whose larvae bore into tree trunks.
Kanji spelling is uncommon; the word is usually written in kana.
The Japanese name ボクトウガ is derived from the kanji 木蠹蛾, literally 'wood-boring moth'. The exact historical derivation is uncertain.