noun
Sinictinogomphus clavatus; clubtail dragonfly species
A species of dragonfly in the family Gomphidae, found in East Asia. The Japanese name refers to the wide, fan-like expansion at the end of its abdomen.
ウチワヤンマは、ため池などで見られるトンボの一種です。
The Sinictinogomphus clavatus is a type of dragonfly found in irrigation ponds and similar habitats.
ウチワヤンマのオスは、腹部の先が団扇のように広がっている。
The male Sinictinogomphus clavatus has a fan-shaped expansion at the tip of its abdomen.
The Japanese name ウチワヤンマ combines 団扇 (uchiwa, 'round fan') and 蜻蜓 (yanma, an old term for large dragonflies), referring to the fan-like shape of the male's abdomen. The exact historical derivation is uncertain.