Mouse Flea vs Northern Rat Flea

Side-by-side species comparison

Attribute Mouse Flea Northern Rat Flea
Scientific Name Leptopsylla segnis Nosopsyllus fasciatus
Order Siphonaptera Siphonaptera
Family Leptopsyllidae Ceratophyllidae
Size 1.5-2 mm 2-3 mm
Habitat Indoors Woodlands
Diet Blood Feeders Blood Feeders
Regions Worldwide Europe, North America, Asia
Conservation Least Concern Least Concern

Mouse Flea

A small flea that parasitizes house mice and other small rodents worldwide. It is commonly found in rodent nests in and around human dwellings.

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Did You Know?

It can transmit murine typhus from rats to humans in domestic settings.

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.