涸沼糸蜻蛉ひぬまいととんぼ 1Mortonagrion hirosei (species of damselfly) Translated by Jiyomi Other writings and readingsヒヌマイトトンボ noun (common) (futsuumeishi) Kanji · tap to open dry up marsh thread dragonfly dragonfly JMdict entry 2171280. Source and licence.