Lichen Katydid vs Elm Zigzag Sawfly

Side-by-side species comparison

Attribute Lichen Katydid Elm Zigzag Sawfly
Scientific Name Dysonia sp. (Dysonia magdalenae) Aproceros leucopoda
Order Orthoptera Hymenoptera
Family Tettigoniidae Argidae
Size 30-45 mm 5-7 mm
Habitat Mountains Woodlands
Diet Herbivores Herbivores
Regions Costa Rica, Panama, Colombia East Asia, invasive in Europe
Conservation Least Concern Least Concern

Lichen Katydid

A Central American katydid with a mottled gray-green body that perfectly mimics lichen on bark. It is nearly invisible when pressed against a tree trunk.

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Did You Know?

It feeds on the same lichen it mimics, making it both predator and impersonator of its food source.

Elm Zigzag Sawfly

A small, pale green sawfly of East Asian origin that has become invasive in Europe. Larvae create distinctive zigzag feeding patterns on elm leaves.

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Did You Know?

This species reproduces entirely by parthenogenesis in its invasive range; males have never been found in Europe.