Invasion behaviour of Varroa jacobsoni into honey bee brood cells was
studied using an observation hive. The mites were carried close to a s
uitable brood cell by the bees. Subsequently, the mites moved from the
bees to the rim of the cell, walked quickly inside, crawled between t
he larva and the cell wall, and moved onto the bottom of the cell. Var
roa mites were never seen walking across the comb, and entering and le
aving brood cells as has been described for Tropilaelaps clareae. Diff
erences in invasion strategies between V. jacobsoni and T. clareae are
discussed.