tōa-chúi-ia̍h大水蝶

winged ant

winged ant (usually appears before strong rain)

English Wiktionary, “大水蝶” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A4%A7%E6%B0%B4%E8%9D%B6 · confidence: Medium (Wiktionary)