noun
hister beetle; clown beetle
Refers specifically to Hister jekeli, a type of hister beetle. The name エンマムシ (閻魔虫) comes from its defensive behavior of tucking in its legs and playing dead, reminiscent of Enma, the judge of the dead.
エンマムシは死んだふりをするときに足を引っ込める。
The hister beetle tucks in its legs when it plays dead.
From 閻魔 (Enma, the Buddhist judge of the dead) + 虫 (mushi, insect), referring to the beetle's habit of playing dead with legs drawn in, resembling a corpse before judgment.