Oriental Rat Flea vs Human Flea

Side-by-side species comparison

Attribute Oriental Rat Flea Human Flea
Scientific Name Xenopsylla cheopis Pulex irritans
Order Siphonaptera Siphonaptera
Family Pulicidae Pulicidae
Size 1.5-2.5 mm 1.5-4 mm
Habitat Underground Underground
Diet Blood Feeders Blood Feeders
Regions Tropical and subtropical regions worldwide Worldwide
Conservation Least Concern Least Concern

Oriental Rat Flea

The primary vector of bubonic plague, responsible for transmitting the bacterium Yersinia pestis between rats and humans. It is a small, dark brown flea found on rodents.

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Did You Know?

This flea species was responsible for transmitting the Black Death, which killed an estimated one-third of Europe's population.

Human Flea

Once common in human homes, now relatively rare in developed countries. Historically responsible for transmitting bubonic plague. Can jump 33 cm vertically.

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Did You Know?

Human fleas were major plague vectors — the Black Death that killed 75-200 million people in the 14th century was largely spread by fleas on rats entering human homes.