Blue Mason Bee vs Apple Sawfly

Side-by-side species comparison

Attribute Blue Mason Bee Apple Sawfly
Scientific Name Osmia caerulescens Hoplocampa testudinea
Order Hymenoptera Hymenoptera
Family Megachilidae Tenthredinidae
Size 7-10 mm 6-7 mm
Habitat Gardens Orchards
Diet Nectar Feeders Fruit Feeders
Regions Western Europe, Central Europe, Southern Europe Europe, introduced to North America
Conservation Least Concern Least Concern

Blue Mason Bee

A small, metallic blue-black solitary bee that nests in pre-existing cavities in wood and walls. It is common in gardens and readily uses artificial bee hotels.

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Did You Know?

Females seal each egg cell with chewed leaf material mixed with mud.

Apple Sawfly

A small brown-and-yellow sawfly that is a significant pest of apple orchards. Larvae bore into developing apples, leaving characteristic ribbon-like scars on the fruit surface.

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Did You Know?

A single larva can destroy three to four developing fruits by boring through them, leaving a trail of frass-filled tunnels.