Westwood's Leaf Insect vs Oak Slug Sawfly

Side-by-side species comparison

Attribute Westwood's Leaf Insect Oak Slug Sawfly
Scientific Name Cryptophyllium westwoodii Caliroa quercuscoccineae
Order Phasmatodea Hymenoptera
Family Phylliidae Tenthredinidae
Size 8-10 cm 4-5 mm (adult)
Habitat Forests Woodlands
Diet Herbivores Herbivores
Regions Thailand, Malaysia, Indonesia North America
Conservation Least Concern Not Evaluated

Westwood's Leaf Insect

A large leaf insect named after the entomologist John Obadiah Westwood. Females are broad and bright green, mimicking fresh leaves.

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Did You Know?

Nymphs are reddish-brown when they hatch, mimicking dead leaves before turning green as they mature.

Oak Slug Sawfly

A slug-like sawfly larva that skeletonizes oak leaves in North America. Severe infestations cause browning of the canopy by midsummer.

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Did You Know?

The slimy larval coating deters most predators except for a few specialized parasitoid wasps.