Japanese Genji Firefly vs Keeled Skimmer

Side-by-side species comparison

Attribute Japanese Genji Firefly Keeled Skimmer
Scientific Name Luciola cruciata Orthetrum coerulescens
Order Coleoptera Odonata
Family Lampyridae Libellulidae
Size 12-18 mm 36-45mm
Habitat Rivers & Streams Rivers & Streams
Diet Omnivores Predators
Regions Japan Europe, Africa
Conservation Vulnerable Least Concern

Japanese Genji Firefly

An aquatic-larval firefly revered in Japanese culture, found near clean streams. It is one of the few fireflies whose larvae develop entirely in freshwater.

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Did You Know?

Annual firefly-viewing festivals called hotarugari have been held in Japan for over a thousand years in honor of this species.

Keeled Skimmer

A slender dragonfly where mature males develop a powder-blue abdomen. Females and immature males are yellowish-brown. It flies low over shallow boggy streams and seepages.

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Did You Know?

It is an indicator species for high-quality wet heathland, and its presence suggests good habitat condition.