Harvester Ant vs Willow Sawfly

Side-by-side species comparison

Attribute Harvester Ant Willow Sawfly
Scientific Name Messor barbarus Nematus salicis
Order Hymenoptera Hymenoptera
Family Formicidae Tenthredinidae
Size 3-14 mm 7-9 mm (adult)
Habitat Heathland Wetlands
Diet Seed Feeders Herbivores
Regions Southern Europe, North Africa Europe
Conservation Least Concern Not Evaluated

Harvester Ant

A large, polymorphic harvester ant with impressive major workers that have broad heads for seed crushing. Workers form long foraging columns to collect seeds. They are among the most conspicuous ants in Mediterranean ecosystems.

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Did You Know?

Majors can crack open seeds with their powerful mandibles that would take a human pliers to break.

Willow Sawfly

A defoliator of willows across Europe found in wetlands and riparian areas. Larvae feed gregariously on willow leaves from May to autumn.

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Did You Know?

Multiple overlapping generations allow continuous feeding pressure throughout the growing season.