Mealworms vs Superworms: Nutrition, Cost & Feeding Guide
Mealworms are the larval stage of the darkling beetle Tenebrio molitor; superworms are the larger larvae of a close cousin, Zophobas morio.
Pet stores often sell both in identical tubs, so keepers grab whichever is cheaper, not realizing the two species differ wildly in protein, fat, and chitin—mistakes that can stall a reptile’s growth or spike a chicken’s feed bill.
Key Differences
Mealworms: 20 % protein, 13 % fat, thin exoskeleton, ideal for small lizards. Superworms: 17 % protein, 20 % fat, tough shell, better for large monitors or fattening hens.
Which One Should You Choose?
Count pennies? Mealworms cost ~3 ¢ each; superworms ~7 ¢. Need gut-load time? Superworms survive weeks without pupating. Crickets too noisy? Both worms deliver silent, odor-free protein.
Examples and Daily Life
Bearded dragon owners dust 6–8 mealworms for juveniles, switch to 3–4 superworms for adults. Backyard flock fans scatter a 50/50 blend to turn kitchen scraps into orange-yolk eggs.
Can I feed dried mealworms to wild birds?
Yes; rehydrate in warm water so robins don’t choke on the stiff shells.
Do superworms bite?
They can nip fingers with tiny mandibles, but it’s harmless—more tickle than sting.