Birch Leafminer vs Giant Jawed Longhorn

Side-by-side species comparison

Attribute Birch Leafminer Giant Jawed Longhorn
Scientific Name Fenusa pusilla Macrodontia dejeanii
Order Hymenoptera Coleoptera
Family Tenthredinidae Cerambycidae
Size 3-4 mm (adult) 50-85 mm
Habitat Forests Forests
Diet Herbivores Wood Feeders
Regions Europe, North America Brazil, Paraguay, Argentina
Conservation Not Evaluated Least Concern

Birch Leafminer

An invasive European sawfly that mines inside birch leaves in North America. Heavy infestations cause extensive browning and premature leaf drop.

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Did You Know?

Multiple generations per year cause increasingly severe browning through the growing season.

Giant Jawed Longhorn

A large prionine with impressive curved mandibles from the tropical forests of South America. While smaller than the famous M. cervicornis, it is still a formidable insect. Males use their enlarged mandibles in combat over females.

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Did You Know?

The mandibles of males can account for nearly a third of total body length and are used like antlers in combat.