True Leaf Katydid vs Yellow-shouldered Slug Sawfly

Side-by-side species comparison

Attribute True Leaf Katydid Yellow-shouldered Slug Sawfly
Scientific Name Pseudophyllus titan Arge berberidis
Order Orthoptera Hymenoptera
Family Tettigoniidae Argidae
Size 50-70 mm 7-9 mm (adult)
Habitat Forests Gardens
Diet Herbivores Herbivores
Regions West Africa, Central Africa Europe
Conservation Least Concern Not Evaluated

True Leaf Katydid

A large katydid with broad green forewings that precisely mimic living leaves. The wing venation pattern is nearly identical to real leaf veins.

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Did You Know?

Its forewings even have small brown spots that mimic fungal damage on real leaves.

Yellow-shouldered Slug Sawfly

A sawfly pest of barberry and mahonia shrubs, skeletonizing leaves in gardens. Larvae are slug-like and pale green with a dark head.

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Did You Know?

Two generations per year can completely strip barberry hedges of their foliage by late summer.