Brunner Stick Insect vs Hazel Sawfly

Side-by-side species comparison

Attribute Brunner Stick Insect Hazel Sawfly
Scientific Name Bruneria borealis Croesus septentrionalis
Order Phasmatodea Hymenoptera
Family Phasmatidae Tenthredinidae
Size 40-60mm 8-10 mm
Habitat Grasslands Heathland
Diet Herbivores Herbivores
Regions North America Europe, Western Asia
Conservation Least Concern Least Concern

Brunner Stick Insect

A small thin brown stick insect and one of the few phasmids native to cold temperate North America. It is wingless and matches dry grass stems perfectly. Males and females are similar in size.

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Did You Know?

It is one of the few stick insects that can survive cold North American winters by laying cold-tolerant eggs in the soil.

Hazel Sawfly

A medium-sized sawfly with an orange abdomen and dark thorax. The bluish-green larvae with black heads feed gregariously on hazel, birch, and alder.

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Did You Know?

When disturbed, the gregarious larvae raise their tails simultaneously in an S-shape, creating an intimidating group display to deter predators.