Females: 1.00 to 1.77 mm long, 1.50 to 1.99 mm wide. Males: 0.75 to 0.98 mm long and 0.70 to 0.88 wide
Adult females reddish-brown to dark brown, oval in shape. Adult males yellowish with lightly tanned legs, spherical body shape
Worldwide, except Australia, parts of Africa, and the Antarctic.
Feeds on the hemolymph of larvae and adult honey bees.
Introduced throughout the world (except Australia) from its original place in Southeast Asia and its original host Apis cerana. It arrived in the US in the 1980s and had a profound impact on beehives.
At first, there was no certainty whether the introduced species was this or the closely related Varroa jacobsoni or both. Now we know that it is the only species in the US.
In addition to feeding on honey bees, it transmits several viruses to them.