Hawaiian Easy Yellow-faced Bee vs Blue Horntail

Side-by-side species comparison

Attribute Hawaiian Easy Yellow-faced Bee Blue Horntail
Scientific Name Hylaeus facilis Sirex juvencus
Order Hymenoptera Hymenoptera
Family Colletidae Siricidae
Size 6-9 mm 12–30 mm
Habitat Farmland Forests
Diet Pollen Feeders Wood Feeders
Regions Oceania (Hawaii) Europe, North America, Asia
Conservation Endangered Not Evaluated

Hawaiian Easy Yellow-faced Bee

An endemic Hawaiian bee found across several of the main Hawaiian islands. It is a generalist pollinator that visits a variety of native and non-native flowers. Like other Hawaiian Hylaeus, it carries pollen internally in its crop rather than on external body hairs.

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Did You Know?

Unlike most bees, Hawaiian yellow-faced bees swallow pollen and carry it in their crop, regurgitating it to provision their nest cells.

Blue Horntail

A metallic blue-black horntail wasp found across the Northern Hemisphere. It breeds in recently dead or dying spruce and fir trees.

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Did You Know?

Adults sometimes emerge from milled lumber years later, boring clean round exit holes through flooring or walls.