04/11/2026
If you think Varroa destructor is the ultimate nightmare for your apiary, you need to wake up and look further east because there is a smaller, faster predator waiting in the wings that makes Varroa look silly.
Let’s talk about Tropilaelaps.
Tropilaelaps is a genus of parasitic mites native to Asia (just like Varroa).
The way they enter a clean hive is identical to Varroa (drone movement, drifting foragers, robbing bees, uncontrolled movement of infested queens and colonies across borders).
The problem is that once they get inside the box, the biological rules completely change.
Unlike Varroa, which spends a mandatory phoretic phase feeding on adult bees, Tropilaelaps is physically incapable of piercing the adult bee's abdominal membrane to feed.
Their mouthparts are strictly designed to feed on the hemolymph (the blood) and fat body tissues of developing bee larvae and pupae.
Because they cannot feed on adult bees, an adult Tropilaelaps mite will literally starve to death within two to three days if there is no open or capped brood present in the hive.
This inability to survive without brood sounds like a weakness, right?
Think again.
What they lack in adult feeding capability, they make up for with an absolute explosion in reproductive speed.
Their entire lifecycle takes about one week, which is roughly twice as fast as Varroa.
A single female Tropilaelaps enters a brood cell right before capping, lays her eggs, and her offspring mature so rapidly that they produce more fertile adults per cycle than Varroa ever could.
The damage they inflict on the developing bee is devastating (I've covered this topic on another post from last week or so, you might want to read that too if you didn't).
In my opinion, the only thing keeping this parasite from wiping out global apiaries right now is their absolute dependency on continuous, year-round brood rearing (I wrote about this too if you wish more information 🙂 ).
In regions with cold winters where the queen naturally breaks her laying cycle, Tropilaelaps populations naturally suffocate and die off due to starvation.
But if you operate in a warm climate, or if you manage highly prolific lines that keep a brood nest active all winter long, this parasite will out-compete and out-breed Varroa to collapse your yard in record time.
The truth is that our current management tools are built around Varroa biology, and assuming those exact same methods will save you from a Tropilaelaps invasion is a dangerous illusion.
If you enjoyed this article, I invite you to read the first chapter of my book (You can find it in my bio 🙏)
For all the paid members who keep my lights on and my dream of making worldwide beekeeping education available for free, I wish to thank you from the bottom of my heart 🧡
Happy beekeeping and healthy winter bees 🐝❄️
