noun
Specifically refers to the bombardier beetle, especially Pheropsophus jessoensis, known for ejecting a hot chemical spray.
See also: 三井寺歩行虫
ヘッピリムシは、お尻から熱いガスを噴き出すことで有名だ。
The bombardier beetle is famous for spraying hot gas from its rear.
noun
Also used for stink bugs, though this usage is less common and may be regional or older.
See also: 椿象
地方によっては、カメムシのことをヘッピリムシと呼ぶこともある。
In some regions, stink bugs are also called ヘッピリムシ.