Limnephiloid Snail Caddis vs European Glowworm

Side-by-side species comparison

Attribute Limnephiloid Snail Caddis European Glowworm
Scientific Name Helicopsyche limnella Lampyris noctiluca
Order Trichoptera Coleoptera
Family Helicopsychidae Lampyridae
Size 4-6 mm 15-25 mm (females); 10-12 mm (males)
Habitat Rivers & Streams Hedgerows
Diet Omnivores Omnivores
Regions Asia Europe, Western Asia
Conservation Least Concern Vulnerable

Limnephiloid Snail Caddis

A tiny caddisfly that builds a perfectly spiraled case from fine sand grains cemented with silk. Larvae scrape algae from rock surfaces in clear streams.

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Did You Know?

The coiled case provides structural strength far exceeding that of a simple tube of the same material.

European Glowworm

A well-known European firefly where only the wingless female produces a steady green glow. Males are winged but produce no light.

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Did You Know?

Females glow for up to two hours each night to attract flying males, then stop after mating.