Iris Sawfly vs Australian March Fly

Side-by-side species comparison

Attribute Iris Sawfly Australian March Fly
Scientific Name Rhadinoceraea micans Bibio imitator
Order Hymenoptera Diptera
Family Tenthredinidae Bibionidae
Size 6-8 mm 6-10 mm
Habitat Ponds & Lakes Woodlands
Diet Herbivores Herbivores
Regions Europe Australia
Conservation Least Concern Least Concern

Iris Sawfly

A small, metallic blue-black sawfly whose grayish larvae with dark heads feed along the edges of iris leaves, producing distinctive notching damage.

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Did You Know?

Larvae feed along leaf edges in a perfectly straight line, creating neat rectangular notches that are diagnostic for this species.

Australian March Fly

A robust black bibionid fly that appears in large numbers during the Australian autumn. It has a hairy body and is a sluggish flyer, often seen resting on vegetation.

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Did You Know?

Despite sharing the common name with horse flies in Australia, march flies in the family Bibionidae are completely harmless.