Translation

The Japanese word for "Drone Fly" is nami-hana-abu ナミハナアブ.

Romaji na mi ha na a bu
Hiraganaなみはなあぶ
Katakanaナミハナアブ
Kanji 並 花 虻
Meaning Average Hoverfly
School Level 小6 小1 ✕

Synonyms

Dronefly.
Scientific name: Eristalis tenax.

Further Reading

Wikipedia: Eristalis_tenax