Mother-of-Pearl Caddis vs Crawling Water Beetle

Side-by-side species comparison

Attribute Mother-of-Pearl Caddis Crawling Water Beetle
Scientific Name Glyphotaelius pellucidus Haliplus ruficollis
Order Trichoptera Coleoptera
Family Limnephilidae Haliplidae
Size 15-22 mm 2-3 mm
Habitat Ponds & Lakes Ponds & Lakes
Diet Herbivores Herbivores
Regions Europe Europe
Conservation Least Concern Least Concern

Mother-of-Pearl Caddis

A large European caddisfly with translucent wings that shimmer with iridescence. Larvae construct flat cases from pieces of dead leaves.

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Did You Know?

Larvae cut leaf pieces into precise rectangles to build their distinctive flat cases.

Crawling Water Beetle

A tiny, oval water beetle with a yellowish body covered in rows of dark punctures. Unlike diving beetles, it crawls slowly among aquatic vegetation rather than swimming actively.

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Did You Know?

It stores air beneath enlarged hind coxal plates, which act as a built-in oxygen reservoir while submerged.