swallowtail butterfly larva; citrus pest caterpillar
Specifically the larva of swallowtail butterflies (family Papilionidae) that feeds on citrus leaves, often found on yuzu and other citrus trees. Considered a pest by growers.
There was a swallowtail butterfly larva on the yuzu tree.
Swallowtail butterfly larvae eat citrus leaves.
Standard kanji spelling; 柚子 (yuzu) + 坊 (boy/monk) suggests a yuzu-loving larva.
Variant spelling using the simpler 柚 for yuzu.
Compound of 柚子 (yuzu, a citrus fruit) and 坊 (boy, monk, or affectionate suffix for a creature). The name likely comes from the larva's association with yuzu trees.