Mediterranean Firefly vs Western Grannom Caddis

Side-by-side species comparison

Attribute Mediterranean Firefly Western Grannom Caddis
Scientific Name Luciola italica Brachycentrus occidentalis
Order Coleoptera Trichoptera
Family Lampyridae Brachycentridae
Size 7-10 mm 9-12 mm
Habitat Heathland Rivers & Streams
Diet Omnivores Omnivores
Regions Europe Europe
Conservation Least Concern Least Concern

Mediterranean Firefly

A common Southern European firefly that flies through warm summer nights producing a continuous greenish glow. It is widespread in Italy and the Mediterranean basin.

💡

Did You Know?

Italian poets and painters have depicted this firefly for centuries, and it remains a beloved symbol of warm summer nights in the Mediterranean.

Western Grannom Caddis

A widespread European caddisfly forming mass emergences in spring on alkaline rivers. Larvae build four-sided tapering cases and filter-feed in riffles.

💡

Did You Know?

Spring Grannom hatches on English chalk streams can darken the sky with millions of emerging adults.