Mountain Ash Sawfly vs Malagasy Praying Stick Insect

Side-by-side species comparison

Attribute Mountain Ash Sawfly Malagasy Praying Stick Insect
Scientific Name Pristiphora geniculata Achrioptera punctipes
Order Hymenoptera Phasmatodea
Family Tenthredinidae Achriopteridae
Size 5-7 mm 150-200 mm
Habitat Mountains Forests
Diet Herbivores Herbivores
Regions Europe, introduced to North America Madagascar
Conservation Least Concern Least Concern

Mountain Ash Sawfly

A small blackish sawfly with pale legs whose green larvae can completely defoliate mountain ash (rowan) trees. Larvae have dark heads and feed gregariously.

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Did You Know?

Introduced to North America in the early 1900s, it quickly became the most damaging pest of ornamental mountain ash trees across the continent.

Malagasy Praying Stick Insect

A large stick insect with spotted legs and a green to brown body covered in small spiny tubercles. Females are considerably larger than males and lack bright coloring.

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Did You Know?

Its spotted legs serve as a secondary identification feature that distinguishes it from the many other Achrioptera species on the island.