Superworms feeder profile

Superworms (Zophobas morio): The Complete Feeder Profile

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Overview

Superworms (Zophobas morio) are the larvae of a tropical darkling beetle. Larger than mealworms (up to 5-6 cm), they are a popular feeder for medium to large reptiles but share many of the same nutritional limitations.

💪
47%
Protein (DM)

,

🧈
38%
Fat (DM)

,

🦴
10mg
Calcium/100g

,

⚖️
1:20
Ca:P Ratio

,

💧
57-61%
Moisture

,

🐛
High
Chitin

Nutritional Profile

Nutritional Breakdown — Superworms (Zophobas morio)
Protein

47% DM
Moderate

,

Fat

38% DM
Poor

,

Calcium

10mg/100g
Poor

,

Ca:P Ratio

1:20
Poor

,

Digestibility

High chitin
Poor

Overall Feeder Rating
4/10
Moderate Feeder — Use with Care

Key Benefits

Their large size makes them suitable for bigger reptiles and reduces the number needed per feeding. They are active movers, triggering feeding responses. More moisture than mealworms. They cannot be refrigerated (they die below 15°C), but this means they stay active and visible to predators. Relatively cheap and widely available.

Suitable Species

ℹ️
Suitability Guide

🟢 = Highly recommended   🔵 = Good choice   🟡 = Occasional use   🔴 = Not recommended

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Storage & Keeping

💡
Storage TipsKeep at room temperature (22-28°C) in bran or oats with sliced vegetables for moisture. Do NOT refrigerate — cold kills them. They will keep for several weeks at room temperature. Isolate individuals to trigger pupation if breeding.

Limitations

⚠️
Things to ConsiderVery similar nutritional problems to mealworms but worse in some areas: extremely high fat (38% DM), a terrible Ca:P ratio (1:20 — the worst of any common feeder), and high chitin from their tough exoskeleton. Their mandibles can bite, so avoid feeding to small or juvenile reptiles. Treat only, never a staple.

References

  • Finke, M.D. (2002). “Complete nutrient composition of commercially raised invertebrates used as food for insectivores.” Zoo Biology, 21(3), 269–285.
  • Oonincx, D.G.A.B. & Dierenfeld, E.S. (2012). “An investigation into the chemical composition of alternative invertebrate prey.” Zoo Biology, 31(1), 40–54.
  • Wikipedia contributors. “Zophobas morio.” Wikipedia, The Free Encyclopedia. Link

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