Blue Orchard Bee vs Rose Slug Sawfly

Side-by-side species comparison

Attribute Blue Orchard Bee Rose Slug Sawfly
Scientific Name Osmia lignaria Endelomyia aethiops
Order Hymenoptera Hymenoptera
Family Megachilidae Tenthredinidae
Size 10-14 mm 4-5 mm
Habitat Orchards Underground
Diet Nectar Feeders Herbivores
Regions North America Europe, introduced to North America
Conservation Least Concern Least Concern

Blue Orchard Bee

A metallic dark blue solitary bee that nests in pre-existing holes in wood. It is an exceptionally efficient pollinator of fruit trees, significantly outperforming honey bees per individual.

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Did You Know?

A single blue orchard bee can pollinate as effectively as 60 to 80 honey bees, making them increasingly important for commercial fruit production.

Rose Slug Sawfly

A small, dark sawfly whose slug-like larvae skeletonize rose leaves by feeding on the upper leaf surface. Larvae are pale yellowish-green and covered in a thin mucus layer.

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Did You Know?

Damaged rose leaves develop a characteristic translucent, papery appearance as only the lower epidermis remains after larval feeding.