noun
damselfly; demoiselle
Refers to insects of the suborder Zygoptera, similar to dragonflies but with slimmer bodies and wings that fold back when at rest.
池のそばでイトトンボを見つけた。
I found a damselfly by the pond.
イトトンボはトンボよりも細くて小さい。
Damselflies are thinner and smaller than dragonflies.
トンボ is the general term for dragonflies, which are stouter and hold their wings flat when resting, unlike damselflies.
The name likely derives from 糸 (いと, thread) + トンボ (dragonfly), referring to the insect's slender, thread-like body.