Parasites have also been identified in bee colonies. One, called the bee louse, is really the wingless fly, Braula coeca. It has recently been seen for the first time in Florida, but has been associated with colonies along the eastern shore (Maryland) for some time. It remains only a biological curiosity, at present in the United States, although certain parts of Europe (i.e. Spain) have reported large infestations. The recent introduction of the parasitic honey bee tracheal mite to Florida has added another pest about which little is known and for which no EPA-approved control measures are yet available.
Certain worm-like parasites called spiroplasmas found in nectar have been shown to be deleterious to workers.