Dead honey bee parasitized by the Zombie Fly.
Can you see the white maggot emerging from the neck region?
In the darkness of night zombified honey bees (ZomBees) abandon their hives and embark upon a flight of the living dead! These honey bees, Apis mellifera, have been infected by the Zombie Fly, Apocephalus borealis, brethren of the nefarious ant-decapitating flies.
Female Zombie Fly, Apocephalus borealis, 2.5 mm long
Photo courtesy of Brian Brown
It all starts when a Zombie Fly finds her way into a bee hive and lays her eggs inside of an unsuspecting bee. After a few days, the eggs hatch and the maggots slowly eat the bee from the inside out. Sensing something is amiss (really, really amiss), the ZomBee abandons its hive under the cover of darkness and "drunkenly" flies towards the light (no pun intended). The zombified bee, like real-life zombies, show symptoms of disorientation (not surprising, since the maggots may well have eaten one, if not all of their brains), such as walking in circles, the inability to stand on their legs, and a fair bit of staggering about. Check out this video:
Zombie-like staggering behavior of honey bees
After the sun rises, the stranded ZomBee slowly dies. Left undisturbed, about seven days later up to 13 maggots emerge, alien-like, from the ZomBee and pupate away from the now lifeless body.
ZomBeee with pupa
Photo thanks to John Hafernik, the scientist who discovered
that Zombie Flies are parasitzing honey bees
Now that you’ve heard my gruesome tale, I am sure you are compelled, by all that is right and good, to become a ZomBee Hunter. For instructions on how to participate, check out our ZomBee Watch website.
A New Threat to Honey Bees, the Parasitic Phorid Fly Apocephalus borealis