How to Feed a Whiptail Scorpion: Complete Feeding Guide

Feeding a whiptail scorpion is one of the first things new keepers get wrong. Offer prey that's too large, feed too often, or leave live insects overnight — and you'll have a stressed, injured, or perpetually hiding vinegaroon on your hands.

This guide covers everything: what whiptail scorpions eat, how to size prey, how often to feed, and what to do when your scorpion refuses food.

What Do Whiptail Scorpions Eat?

Whiptail scorpions are ambush predators. In the wild, they hunt insects, worms, and occasionally small vertebrates across dry grasslands and scrubland. In captivity, you replicate that diet with feeder insects.

Best feeder insects for whiptail scorpions:

• Dubia roaches — the top choice for most keepers. High protein, low fat, and easy to gut-load. Dubia roaches don't bite, don't chirp, and won't injure your scorpion if one escapes at night.
• Crickets — widely available and inexpensive, but they'll bite resting scorpions if left uneaten. Always remove crickets after 24 hours.
• Mealworms — a good choice for juveniles. They're higher in fat, so limit them to once or twice a week for adults.
• Superworms — great for adults. Their active movement triggers the whiptail scorpion's hunting instinct and works well for reluctant feeders.
• Earthworms — an excellent moisture source that most whiptail scorpions eat eagerly.
• Fruit flies — essential for hatchlings and juveniles under ½ inch.

Never feed fireflies, glowworms, or wild-caught insects. These can be toxic or carry parasites. Waxworms are safe as an occasional treat but are too fatty for regular use.

How Big Should the Prey Be?

Prey size is the most common mistake new keepers make. A prey item that's too large will stress your whiptail scorpion and trigger a defensive retreat instead of a hunt.

The rule: prey should be no wider than the width of your scorpion's body at its broadest point.

For a full-grown adult Mastigoproctus giganteus (2–3 inches body length):

• Medium dubia roaches (about ¾ inch)
• Medium crickets
• One superworm at a time

For sub-adults (1–2 inches):

• Small crickets or small roaches (about ½ inch)
• Small mealworms

For juveniles under 1 inch:

• Pinhead crickets
• Fruit flies (Drosophila)
• Micro mealworms

When in doubt, go smaller. An undersized prey item is never a problem. An oversized one can injure or seriously stress your scorpion.

How Often to Feed a Whiptail Scorpion

Whiptail scorpions have slow metabolisms. They don't need frequent meals — overfeeding is just as harmful as underfeeding.

A healthy adult can skip 4–8 weeks without any food, especially before a molt. Don't panic if your whiptail scorpion misses a meal or two — this is completely normal behavior.

Step-by-Step: How to Feed Your Whiptail Scorpion

Step 1: Feed at night. Whiptail scorpions are nocturnal hunters. Offer food 30–60 minutes after lights out. Trying to feed during daylight almost always fails.

Step 2: Use feeding tongs. Never drop prey directly from your hand. Reptile feeding tongs let you place prey near your scorpion's hide without startling it or risking a defensive spray of acetic acid.

Step 3: Gut-load your feeders 24 hours before. Gut-loading means feeding your feeder insects nutritious food before they become a meal. This passes vitamins and minerals through to your scorpion. Offer your roaches or crickets leafy greens, carrots, and a cricket gut-load formula the day before every feeding.

Step 4: Place prey, then step back. Once you set prey near your scorpion, don't hover. When it grabs prey with its pedipalps, leave it alone completely. Disturbance causes the scorpion to drop the meal and retreat.

Step 5: Remove uneaten prey after 24 hours. This isn't optional. Crickets will bite a sleeping scorpion and cause real harm. Check every morning after a feeding night and pull out anything uneaten.

Mid-guide: Need help with the full habitat setup? Check out our complete whiptail scorpion care guide for enclosure size, substrate, temperature, and humidity recommendations.

Do Whiptail Scorpions Need Water?

Whiptail scorpions get most of their hydration from prey, but a small water source is still worth providing. Use a bottle cap or a shallow reptile water dish filled with clean, dechlorinated water on the cooler side of the enclosure. Change the water every 2–3 days to keep it fresh.

Alternatively, lightly mist one corner of the enclosure once a week. Don't mist the whole enclosure — whiptail scorpions come from dry environments and can develop respiratory issues in high humidity. For a full breakdown of moisture management, see our guide to humidity for exotic invertebrates.

Vitamins and Mineral Supplements

Feeder insects alone don't provide complete nutrition. A simple supplement routine keeps your whiptail scorpion healthy long-term.

• Calcium powder: dust prey lightly every other feeding. This supports healthy molting and prevents calcium deficiency.
• Reptile multivitamin: dust prey once a month. Don't overdo it — excessive vitamin A is toxic to arachnids.

Keep dustings very light. You shouldn't see white powder coating the insect — just the faintest residue. A little goes a long way.

Feeding Around Molting

Molting changes everything about your feeding schedule. When your whiptail scorpion is about to shed, it'll stop eating on its own — sometimes for weeks. That's your cue to remove all live prey from the enclosure immediately.

After the molt, wait at least 7–10 days before offering food again. The new exoskeleton needs time to harden fully. Start with soft prey — freshly molted mealworms or earthworms work well. Avoid hard-bodied prey like crickets or superworms until the exoskeleton looks firm and glossy again.

Also stop supplementing for 1–2 weeks post-molt. The scorpion's body is absorbing a lot as it rebuilds its exoskeleton, and extra vitamin dosing can interfere.

Why Is My Whiptail Scorpion Not Eating?

Feeding refusal is the most common concern for whiptail scorpion keepers, and it's almost always benign. Here's what's usually happening:

Pre-molt. The most common cause by far. Your scorpion may stop eating 2–8 weeks before shedding. Look for a slightly dull, matte finish to the exoskeleton. Just wait it out.

Low temperature. Whiptail scorpions need 75–85°F to digest properly. Below 72°F, metabolism slows sharply and appetite drops. Check your ambient and substrate temperatures.

Stress from a new home. A recently purchased scorpion may refuse food for 2–4 weeks. Minimize handling, keep the enclosure dark and undisturbed, and give it time to settle in.

Prey that's too big. Try downsizing prey by one size and try again the next night.

Wrong prey type. Individual scorpions can have strong preferences. If crickets aren't working, try a dubia roach or wiggle a superworm in front of it.

Seasonal slowdown. Wild whiptail scorpions go through a drier, cooler period in fall and winter. Captive animals sometimes follow the same pattern and naturally reduce feeding.

If your scorpion hasn't eaten in more than 6–8 weeks outside of pre-molt and shows a visibly sunken abdomen, consult an exotic invertebrate veterinarian.

Reading Body Condition

The abdomen is your best health indicator. Check it monthly.

Healthy: plump, slightly rounded abdomen. Segments are visible but not sunken.

Underweight: wrinkled, shrunken abdomen with deep creases between segments. Increase feeding frequency or try a more appealing prey type.

Overweight: extremely swollen abdomen with segments pushed apart. Skip one or two feedings and cut back on superworms.

Where to Get Feeder Insects

Local pet stores are convenient for crickets and mealworms, but the feeders are often poorly gut-loaded and arrive stressed. Online feeder suppliers are worth the slight extra effort — they ship insects overnight, and the feeders arrive healthy and ready to gut-load.

If you keep multiple invertebrates, consider starting a small dubia roach colony. Roaches are easy to breed in a warm bin with cardboard egg crates and regular food scraps. You'll always have appropriately sized prey on hand and save money over time.

Quick Feeding Reference

Wrapping Up

Feeding a whiptail scorpion well comes down to five habits: right prey size, right frequency, gut-loaded feeders, removing uneaten prey, and patience during molts. Get those right and your vinegaroon will eat consistently and stay healthy for years.

The fastest way to know if you're on track? Check the abdomen. A plump, rounded belly means you're doing it right.

Ready to set up everything your whiptail scorpion needs? Shop dubia roaches, feeding tongs, and supplements on Amazon and build the perfect feeding routine today.