The Yellow Mealworm Beetle is a black darkling beetle whose larva, the mealworm, is one of the most widely recognized insects in the world — commercially raised by the millions as reptile and bird food. Adults are nocturnal, found in grain stores and under debris. Mealworms are now being studied as a sustainable protein source for human food.
Best time to see a Yellow Mealworm Beetle
The best time to see a Yellow Mealworm Beetle is June–August, when about 62% of U.S. sightings happen, based on 330 research-grade iNaturalist observations.
Not certain it is a Yellow Mealworm Beetle? What bug is this? walks through what to check first and the lookalikes that catch people out.
Recent Yellow Mealworm Beetle sightings near you
Live, research-grade observations from iNaturalist. Allow location to center the map on you.
Spotted a Yellow Mealworm Beetle?
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