Northern Rat Flea vs Horse Sucking Louse

Side-by-side species comparison

Attribute Northern Rat Flea Horse Sucking Louse
Scientific Name Nosopsyllus fasciatus Haematopinus asini
Order Siphonaptera Phthiraptera
Family Ceratophyllidae Haematopinidae
Size 2-3 mm 2.5-3.5 mm
Habitat Woodlands Farmland
Diet Blood Feeders Blood Feeders
Regions Europe, North America, Asia Worldwide
Conservation Least Concern Least Concern

Northern Rat Flea

A flea of the Norway rat found in temperate climates, capable of transmitting murine typhus. It has a distinctive pronotal comb of spines.

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Did You Know?

This flea thrives in the cool conditions of sewers and basements, making it a persistent pest in urban rat populations.

Horse Sucking Louse

A large blood-sucking louse found on horses, donkeys, and mules. It prefers areas with long hair such as the mane, forelock, and tail base.

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Did You Know?

Infested horses develop a rough, dull coat and the constant irritation can cause significant weight loss.