Large Birch Cimbicid vs Wall Brown

Side-by-side species comparison

Attribute Large Birch Cimbicid Wall Brown
Scientific Name Cimbex connatus Lasiommata megera
Order Hymenoptera Lepidoptera
Family Cimbicidae Nymphalidae
Size 18-28 mm Wingspan 36-50mm
Habitat Woodlands Beaches & Coastal
Diet Herbivores Herbivores
Regions Northern and Eastern Europe, Siberia Europe, Asia
Conservation Least Concern Least Concern

Large Birch Cimbicid

A very large sawfly, closely related to C. femoratus, with a massive body and distinctly clubbed antennae. Adults vary in color from yellowish to dark brownish-black.

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Did You Know?

This species was once confused with C. femoratus until detailed morphological studies separated them as distinct species based on antennal and genital characters.

Wall Brown

An orange-brown butterfly with eyespots that basks with wings open on walls, rocks and bare ground.

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Did You Know?

Named for its habit of sunbathing on warm walls and has sadly declined across much of western Europe.