noun
Japanese carpenter ant
Refers specifically to Camponotus japonicus, a large black ant native to Japan. Often called クロオオアリ (黒大蟻) as well.
See also: 黒大蟻
庭でクマアリを見つけた。
I found a Japanese carpenter ant in the garden.
Synonym; クロオオアリ is the more common name for the same species.
Compound of 熊 (kuma, 'bear') and 蟻 (ari, 'ant'), likely referring to its large size and dark color.