noun
Japanese carpenter ant
Refers specifically to Camponotus japonicus, a large black ant native to Japan. Often written in katakana in biological contexts.
庭でクロオオアリを見つけた。
I found a Japanese carpenter ant in the garden.
Katakana spelling is common for this species name; usually written in kana.
Kanji spelling exists but is rarely used; the word is usually written in kana.
Compound of 黒 (kuro, 'black') + 大 (ō, 'large') + 蟻 (ari, 'ant'). The name describes its appearance.