鰹かつお節ぶし虫むし

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Meanings

1

noun

dermestid beetle

Specifically refers to beetles of the family Dermestidae, often found as pests in dried food products like katsuobushi (dried bonito flakes).

bonito

節node, season, period

虫insect, bug, temper

鰹かつお節ぶし
鰹節 (katsuobushi) is dried bonito flakes, the food source often infested by this beetle.
害がい虫ちゅう
害虫 is a general term for harmful insects; 鰹節虫 is a specific type.

Compound of 鰹節 (katsuobushi, 'dried bonito flakes') and 虫 (mushi, 'insect'), referring to its common habitat.