Horn Fly vs Hawaiian Easy Yellow-faced Bee

Side-by-side species comparison

Attribute Horn Fly Hawaiian Easy Yellow-faced Bee
Scientific Name Haematobia irritans Hylaeus facilis
Order Diptera Hymenoptera
Family Muscidae Colletidae
Size 3-5 mm 6-9 mm
Habitat Farmland Farmland
Diet Blood Feeders Pollen Feeders
Regions Worldwide Oceania (Hawaii)
Conservation Least Concern Endangered

Horn Fly

A small blood-feeding fly that spends almost its entire life on cattle. It clusters at the base of horns and along the back and belly.

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Did You Know?

Each fly feeds up to 40 times daily, and infestations of thousands per animal cause severe weight loss.

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.