Tunga penetrans (Chigoe flea)

Found in tropical and subtropical regions, particularly in sandy soil, dust, or dirt in villages and farms (Central/South America and Sub-Saharan Africa).

The adult flea feeds on the blood of a host (humans, pigs, dogs). The female burrows into the skin to feed and lay eggs.

Unlike other fleas, the female burrows into the host's skin (usually feet or toes). It remains there for several weeks while its abdomen swells with eggs, eventually releasing them through a small opening in the skin before dying.

Causes Tungiasis, which leads to intense itching, pain, and secondary infections such as cellulitis, gangrene, or tetanus if not treated. There are no known benefits to humans or ecosystems.