Willow Bean-Gall Sawfly vs Mother-of-Pearl Caddis

Side-by-side species comparison

Attribute Willow Bean-Gall Sawfly Mother-of-Pearl Caddis
Scientific Name Pontania proxima Glyphotaelius pellucidus
Order Hymenoptera Trichoptera
Family Tenthredinidae Limnephilidae
Size 3-5 mm 15-22 mm
Habitat Wetlands Ponds & Lakes
Diet Herbivores Herbivores
Regions Europe, Western Asia Europe
Conservation Least Concern Least Concern

Willow Bean-Gall Sawfly

A tiny sawfly that induces distinctive bean-shaped galls on the leaves of various willow species. Each gall contains a single larva feeding on internal gall tissue.

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Did You Know?

The gall-inducing chemicals secreted by the larva redirect the plant's growth to create a nutrient-rich chamber specifically for the larva's benefit.

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.