Blue Mason Bee vs Large Sallow Mining Bee

Side-by-side species comparison

Attribute Blue Mason Bee Large Sallow Mining Bee
Scientific Name Osmia caerulescens Andrena apicata
Order Hymenoptera Hymenoptera
Family Megachilidae Andrenidae
Size 7-10 mm 11-14 mm
Habitat Gardens Wetlands
Diet Nectar Feeders Nectar Feeders
Regions Western Europe, Central Europe, Southern Europe Europe
Conservation Least Concern Near Threatened

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.

💡

Did You Know?

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

Large Sallow Mining Bee

A rare, early-spring mining bee that specializes on sallow and willow catkins. It has declined significantly across Europe due to loss of wetland habitats.

💡

Did You Know?

It is so dependent on sallow catkins that the removal of sallow trees from wetlands has caused local extinctions across England.