Beetle & Stag Beetle Disease & Trouble Prevention Guide

Even with proper care, unexpected problems can arise in insect keeping. Larvae of stag beetles and rhinoceros beetles are particularly sensitive to environmental changes during their development, making early detection and response essential.

Common Problems

Mite Infestation - **Symptoms**: Large numbers of small white or brown bugs on the case interior and adult insect body - **Cause**: Excess substrate moisture, use of old substrate - **Treatment**: Wash adults in lukewarm water and completely replace the case and substrate with fresh materials

Fungus Bottle Deterioration and Blue Mold - **Symptoms**: Fungus bottle turns brown and develops blue or green mold - **Cause**: End of fungus lifespan, high temperature environment, contamination - **Treatment**: Promptly transfer larvae to a new fungus bottle. Store bottles in cool locations below 25C

Wing Deformity (Failed Eclosion) - **Symptoms**: Wings or legs fail to extend normally during emergence from pupa, resulting in deformity - **Cause**: Damaged pupal chamber, insufficient humidity, temperature fluctuations - **Treatment**: Use an artificial pupal chamber (made of sponge) to support emergence

Substrate Overheating and Gas Generation - **Symptoms**: Case interior is abnormally warm with ammonia odor. Larvae come to the surface - **Cause**: Heat generated by ongoing fermentation of insufficiently processed substrate - **Treatment**: Spread substrate out for several days of gas release before using

Prevention Tips

Keep breeding cases away from direct sunlight and high temperature/humidity locations. Regularly observe substrate and fungus bottle conditions. Maintain consistent temperature and humidity, and avoid sudden environmental changes.

Benefits of Buying on Buri-Choku

On Buri-Choku, you can purchase healthy, carefully managed specimens directly from experienced breeders. The ability to ask breeders about care methods directly makes it safe for beginners to start insect keeping.