Japanese cockchafer
A species of beetle (Melolontha japonica) native to Japan. The name is usually written in katakana.
The Japanese cockchafer is active at night.
Katakana spelling is standard for this insect name; the kanji form 粉吹金亀子 is rare and mainly used in specialized contexts.
Kanji form; rarely used in modern writing.
The name コフキコガネ literally means 'powder-dusted small scarab', referring to the beetle's appearance. The exact derivation is uncertain.