Thank you for sharing that vivid (and completely relatable) late-night bathroom encounter. That unmistakable “whap” against the light can definitely make anyone jump.
You were right to question whether it was a June bug—and you were even closer to the correct answer. Let’s confirm what you saw, explain why it showed up in your bathroom, and go over exactly what to do if it happens again.
Good News First: The Cockchafer Is Harmless
The insect you encountered is a cockchafer (Melolontha melolontha), also known as a “May bug” or “doodlebug.”
Here’s the important part:
- It does not bite or sting. Those mouthparts are only for chewing leaves.
- It is not poisonous—no venom, no irritation.
- It does not infest homes. It lives outdoors and only came inside by accident.
So yes—completely harmless to both you and your pets.
Why Was It in Your Bathroom?
Cockchafers are nocturnal insects strongly attracted to light, especially bright white indoor lighting.
Your bathroom likely acted like a beacon:
- Bright light
- Reflective surfaces (tiles, mirrors, porcelain)
These conditions easily draw them inside through open windows or vents.
They are most active in late spring (April–May) during a short 4–6 week adult phase, when they fly at dusk looking for mates. During this time, accidental indoor visits are common.
Cockchafer vs. June Bug
It’s very common to confuse these two. Here’s a quick comparison:
| Feature | Cockchafer (May Bug) | June Bug |
|---|---|---|
| Size | Larger (25–35 mm) | Smaller (12–25 mm) |
| Color | Reddish-brown, black head | Shiny greenish-brown |
| Movement | Loud, clumsy, bumpy | Buzzing, slightly agile |
| Active Season | April–May | May–June |
| Body Shape | Stocky, oval | Slightly sleeker |
Cockchafers are especially known for that loud, awkward flight—you heard it correctly.
What to Do If You Find One
You handled the situation well. Here’s the ideal approach:
- Stay calm
It cannot harm you, even if it lands on you. - Turn off the light and close the door
Darkness helps it settle down. - Open a window and provide an exit
If possible, turn on a light outside to guide it out. - Or gently capture and release it
Use a cup and a piece of paper, then release it outside onto a tree or bush.
What NOT to Do
Continued on next page:
