Oriental Rat Flea vs Australian Harlequin Bug

Side-by-side species comparison

Attribute Oriental Rat Flea Australian Harlequin Bug
Scientific Name Xenopsylla cheopis Dindymus versicolor
Order Siphonaptera Hemiptera
Family Pulicidae Pyrrhocoridae
Size 1.5-2.5 mm 10-14 mm
Habitat Underground Underground
Diet Blood Feeders Predators
Regions Tropical and subtropical regions worldwide Australia, Oceania
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.

Australian Harlequin Bug

A small but conspicuous red and black bug that often aggregates in large numbers on tree trunks, fences, and walls during autumn. Its bright colouration warns predators of its foul-tasting defensive secretions.

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Did You Know?

Harlequin bugs produce a pungent smell when disturbed, and large aggregations can number in the thousands.