Small Square-Gilled Mayfly vs Taiwanese Window Firefly

Side-by-side species comparison

Attribute Small Square-Gilled Mayfly Taiwanese Window Firefly
Scientific Name Caenis luctuosa Pyrocoelia analis
Order Ephemeroptera Coleoptera
Family Caenidae Lampyridae
Size 3-6 mm 12-18 mm
Habitat Ponds & Lakes Mountains
Diet Omnivores Omnivores
Regions Europe East Asia
Conservation Least Concern Least Concern

Small Square-Gilled Mayfly

A minute mayfly with distinctive square-shaped gills on its nymphs. Adults swarm in enormous numbers near water at twilight.

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Did You Know?

The enlarged second gill plate acts as a protective cover over the remaining delicate gills.

Taiwanese Window Firefly

A large Taiwanese firefly with a distinctive orange pronotum and transparent wing windows. Its larvae are terrestrial and glow brightly.

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Did You Know?

Taiwan has designated several firefly reserves and holds annual firefly festivals that attract hundreds of thousands of visitors.