varroa
Concise Oxford English Dictionary © 2008 Oxford University Press:
varroa /ˈvarəʊə/
▶noun a microscopic mite which is a debilitating parasite of the honeybee. [Varroa jacobsoni.]
– origin 1970s: mod. L., from the name of the Roman writer Varro (with ref. to his work on bee-keeping) + -a1.
'varroa' also found in these Oxford entries:

