chigoe

The chigoe flea, Tunga penetrans, was documented by the Spanish historian Gonzalo Fernández de Oviedo in his 1535 natural history of the West Indies. He called it the 'nigua,' the Taino name used in Hispaniola, and described how the female burrows into the skin between the toes, swelling as she fills with eggs. The parasite had been endemic to the Americas long before any European arrived, and indigenous communities from Florida to Argentina had treatments for the infestation they had lived with for generations.

English colonists in Barbados and Jamaica encountered the flea in the seventeenth century and adopted a different name from Carib-speaking peoples of the Lesser Antilles. The word 'chigoe' first appeared in English in 1661, in a published account of Caribbean travel. Early spelling varied across texts: 'chegoe,' 'chigre,' 'chegre,' all attempts to fix a Carib sound in English letters, and by the early eighteenth century 'chigoe' was the most common form in English medical and natural history writing.

In 1873, a ship carrying sand ballast from South America docked in Angola, and with it came a population of chigoe fleas. The parasite had been absent from Africa until that moment. It spread across sub-Saharan Africa within a decade, and missionaries and colonial administrators writing home used 'chigoe' and 'jigger' interchangeably as the word followed the flea across an ocean it had not crossed under its own power.

The word created lasting confusion in English because 'chigger,' a variant of 'chigoe,' was also applied to the harvest mite (Trombicula species), a completely different parasite causing a different condition. By the twentieth century, medical entomologists had settled on 'jigger flea' to distinguish Tunga penetrans from the mite, while 'chigoe' remained the formal scientific English term. The Carib word had outlasted the spelling wars and the Atlantic crossing to become a diagnostic category in global health.