Visually Checking for Varroa Mites
Visually Checking for Varroa Mites
Varroa mites are one of the most common and serious pests in beekeeping, affecting colonies around the world. While you can’t fully diagnose a mite problem just by looking at a hive, there are several visual clues that can let you know it’s time to take a closer look and run a proper test.
Here are some of the most common things beekeepers watch for during inspections:
Deformed Wings
Bees with crumpled or twisted wings—often called “K-wing”—are usually a sign that mites were present during development. It’s one of the more recognizable warning signs.
Seeing Mites on Bees
It can be difficult to spot them without a closer look, but sometimes mites are visible on the backs of adult bees. If you’re seeing them with the naked eye, the infestation is usually already well established.
Bald or Uncapped Brood
If you notice uncapped or partially uncapped pupae, it may be a sign that bees are actively trying to remove infested brood. A few cells here and there can be normal, but widespread patterns can point to a mite issue.
Increased Hygienic Behavior
Sometimes you’ll see bees consistently uncapping and removing pupae. This can be part of normal hive hygiene, but heavy or ongoing activity often signals they’re dealing with something—commonly Varroa.
Drone Brood Inspection
Drone brood is one of the easiest places to look for mites since they prefer drone cells. When pulling frames or separating boxes, take a moment to check drone brood closely.
Mite Movement on Bees or Brood
If you actually see mites moving across bees or within brood cells, that’s a clear sign the mite load is high and action is needed.
Changes in Behavior
Bees under mite pressure may look off—less active, disoriented, or not behaving like a healthy, strong colony. While behavior alone isn’t diagnostic, it can support what you’re seeing visually.
Conclusion
These visual signs can be helpful indicators, but they shouldn’t replace regular mite testing. Case in point—if you are "seeing" evidence of Varroa mites, your hive is likely heavily infested.
If not already, get comfortable using the Varroa EasyCheck to give you a clear mite load result.
It’s a good habit to test routinely, especially after honey harvest in the summer when mite levels can build quickly.