Do Mealworms Turn into Beetles?

Basics. Mealworms are the larval stage of the darkling beetle. ... They remain as pupae for about one to three weeks before emerging as adult darkling beetles, ready to eat and reproduce.

How long does it take mealworms to turn into beetles?

After 6 - 18 days (7-24 days or more), the pupae metamorphose into beetles. At first the beetle is white/light beige with a soft shell, and then it darkens and hardens to red, brown, and finally turns dark brown/black after about 2-7 days. The beetle is about a half to three quarters of an inch long and slightly flat.

Are darkling beetles harmful?

It is a darkling beetle, also called a mealworm beetle. These insects tend to hide so they can be found under, in, or between stacked hay bales. Darkling beetles do not contain cantharidin, the toxin in blister beetles; they are not harmful.

Alexander Ross

Alexander Ross

Gaming, Esports & Interactive Media Writer

Alexander Ross has covered the video game industry for a decade, writing deep dives on game design, esports tournaments, VR developments, and gaming culture.