Tailless Whip Scorpion (Damon diadema) Care Sheet
The Tailless Whip Scorpion is one of the most unusual-looking arachnids maintained in captivity. Damon diadema has an extremely flattened body, powerful spined pedipalps and extraordinarily long, whip-like front legs that it uses to explore its surroundings.
Despite its intimidating appearance, Damon diadema has no venomous sting and no venom glands used for subduing prey. Unlike vinegaroons, it also lacks the defensive vinegar-like spray. Its main defences are speed, concealment and its formidable-looking pedipalps.
Tailless Whip Scorpions belong to the arachnid order Amblypygi and are often called amblypygids or whip spiders. They are neither true spiders nor true scorpions.
Successful captive husbandry requires warm tropical conditions, appropriate humidity combined with good ventilation, extensive vertical climbing surfaces, secure retreats and appropriately sized live invertebrate prey. Vertical structure is especially important because these arachnids need sufficient space to hang while moulting.
Quick Facts
Scientific name: Damon diadema
Common names: Tailless Whip Scorpion, Giant Tailless Whip Scorpion, Whip Spider
Order: Amblypygi
Family: Phrynichidae
Origin: East Africa
Adult body size: Approximately 4–6 cm, excluding the extremely long sensory legs
Leg span: Can exceed 20 cm in large adults when the antenniform legs are extended
Lifespan: Potentially 5–10+ years with appropriate care
Diet: Carnivorous/insectivorous
Activity: Primarily nocturnal
Lifestyle: Arboreal/scansorial and crevice-dwelling
Experience level: Intermediate
Venomous: No
Stinger: No
Temperament: Generally shy and defensive rather than aggressive
What Is an Amblypygid?
Damon diadema belongs to the arachnid order:
Amblypygi
Amblypygids are related to:
- Spiders
- Scorpions
- Vinegaroons
- Other arachnids
However, they represent their own distinct group.
Their appearance is so unusual that they are frequently mistaken for spiders or scorpions.
Why “Tailless Whip Scorpion”?
The name refers to two obvious characteristics.
Tailless — unlike vinegaroons and true scorpions, amblypygids do not possess a long tail-like structure.
Whip — their first pair of legs is extremely elongated and functions as sensory organs.
Despite the name, they are not true scorpions.
No Venom
Damon diadema does not possess venom glands for subduing prey.
It captures prey using its powerful:
raptorial pedipalps.
These appendages contain prominent spines that help trap insects.
No Stinger
Tailless Whip Scorpions possess:
no venomous stinger.
There is no scorpion-like tail hidden beneath the body.
Their unusual appearance is considerably more intimidating than their actual defensive capabilities.
Natural Distribution
Damon diadema originates from East Africa.
It occurs in environments where it can utilise:
- Rock faces
- Tree trunks
- Bark
- Caves
- Crevices
- Other vertical surfaces
Accurate provenance should be retained whenever available.
Natural Habitat
Unlike burrowing vinegaroons, Damon diadema is strongly associated with vertical structures.
Wild individuals may shelter:
- Beneath loose bark
- Inside rock crevices
- On cave walls
- Beneath logs
- Between rocks
Their extremely flattened bodies allow them to squeeze into remarkably narrow spaces.
Flattened Body
The body of Damon diadema is extremely flat.
This adaptation allows the animal to:
- Hide beneath bark
- Enter narrow rock crevices
- Press closely against surfaces
- Avoid predators
Captive enclosures should provide similar narrow retreats.
Antenniform Legs
The first pair of legs is extremely elongated and functions primarily as a sensory system.
These are known as:
antenniform legs.
They are not used for normal walking in the same way as the remaining legs.
Sensory Function
The antenniform legs allow the animal to investigate:
- Surfaces
- Air movement
- Obstacles
- Prey
- Potential mates
- Threats
- Routes through the environment
An amblypygid may gently sweep these appendages through the surrounding area while remaining almost completely stationary.
Never Grab the Sensory Legs
The antenniform legs are delicate and extremely important.
Never:
- Pull them
- Grab them
- Restrain the animal by them
- Deliberately bend them
Handling should never involve restraining any appendage.
Pedipalps
The large forward-facing appendages are the:
pedipalps.
They are equipped with prominent spines and function primarily in:
- Capturing prey
- Manipulating food
- Defence
- Courtship
When hunting, the animal can snap these appendages around prey with impressive speed.
Adult Size
The central body is much smaller than the overall animal appears.
Adults commonly reach approximately:
4–6 cm body length
but the extremely long legs create a much greater overall span.
Large individuals may exceed:
20 cm across
when fully extended.
Lifespan
Tailless Whip Scorpions can be surprisingly long-lived compared with many commonly kept invertebrates.
With appropriate care, Damon diadema may potentially live:
5–10+ years
Individual lifespan varies according to:
- Sex
- Age at acquisition
- Temperature
- Nutrition
- Moulting success
- General husbandry
Housing
A secure vertically oriented enclosure is ideal.
Suitable accommodation can include:
- Tall glass terrariums
- Purpose-built arboreal invertebrate enclosures
- Secure ventilated plastic enclosures
The enclosure should prioritise:
- Vertical surfaces
- Height
- Secure retreats
- Humidity
- Ventilation
- Moulting space
- Escape prevention
Enclosure Size
For a single adult, an enclosure approximately:
30 × 30 × 45 cm or larger
provides a useful general starting point.
Larger accommodation can be beneficial provided the animal can still locate prey.
The enclosure must accommodate the full span of the animal’s extremely long sensory legs.
Height Is Important
Unlike many terrestrial invertebrates, enclosure height is particularly valuable for Damon diadema.
The animal requires vertical surfaces for:
- Climbing
- Resting
- Hunting
- Hiding
- Moulting
A low terrestrial enclosure is therefore inappropriate.
Vertical Climbing Surfaces
Provide extensive rough vertical surfaces.
Suitable materials include:
- Cork bark
- Cork tubes
- Textured backgrounds
- Secure branches
- Rough natural wood
Smooth bare glass should not be the only climbing surface.
Cork Bark
Large vertical pieces of cork bark are particularly useful.
They provide:
- Climbing surfaces
- Narrow retreats
- Moulting locations
- Visual barriers
- Naturalistic structure
Position pieces securely so they cannot collapse.
Narrow Crevices
Provide narrow retreats between pieces of cork bark.
The flattened body allows Damon diadema to occupy spaces that may appear surprisingly small.
A suitable retreat should allow the animal to:
- Press against a surface
- Remain concealed
- Feel secure
However, it should never be capable of trapping the animal.
Moulting Space
Adequate moulting space is critical.
Amblypygids commonly moult while suspended from a vertical or inverted surface.
The animal requires enough clear space beneath itself to emerge fully from the old exoskeleton.
Insufficient space can result in:
- Deformed limbs
- Entrapment
- Failed moult
- Death
Substrate
Suitable substrate can include:
- Coco fibre
- Fertiliser-free topsoil
- Soil/coir mixtures
- Other moisture-retaining tropical substrates
The substrate should help maintain humidity without remaining permanently waterlogged.
Substrate Depth
Approximately:
5–10 cm
of substrate is generally sufficient for routine adult husbandry.
Unlike vinegaroons, Damon diadema does not require extremely deep substrate for extensive burrow construction.
Vertical structure is considerably more important.
Humidity
Damon diadema requires moderately high humidity.
A useful general range is approximately:
70–80% relative humidity
although the enclosure should not remain stagnant or saturated.
Stable access to humid retreats is particularly important around moulting.
Ventilation
High humidity must be combined with good ventilation.
Poor airflow can encourage:
- Mould
- Stagnant conditions
- Mite outbreaks
- Unhealthy substrate
Cross-ventilation is highly beneficial.
The aim is humid air with appropriate exchange rather than a sealed wet container.
Misting
Light misting can be used to maintain appropriate humidity.
Allow some surface drying between misting sessions.
Do not continuously soak:
- Cork bark
- Substrate
- Enclosure walls
The exact misting schedule depends upon enclosure ventilation and ambient conditions.
Temperature
A useful general captive temperature range is approximately:
23–27°C
with modest nighttime cooling acceptable.
Avoid extreme heat.
Stable warm conditions are preferable to large uncontrolled fluctuations.
Heating
Supplemental heating may be required in cooler homes.
If heating is necessary, use:
- Thermostatically controlled equipment
- Gentle external heating
- A heat source positioned to create a gradient
Avoid heating the entire enclosure uniformly.
Heat Mats
If a heat mat is used, positioning it against the:
side or rear of the enclosure
is generally preferable to placing it beneath the substrate.
Always use a thermostat.
The animal must be able to move away from the heated area.
Direct Sunlight
Never place the enclosure in direct sunlight.
Glass and plastic enclosures can overheat rapidly.
Keep the enclosure away from:
- Sunny windows
- Radiators
- Strong drafts
- Air-conditioning outlets
Water
Provide a shallow clean water dish.
The dish should be:
- Stable
- Easy to access
- Appropriately shallow
- Cleaned regularly
Some individuals may also drink droplets from enclosure surfaces after misting.
Lighting
Specialist lighting is generally unnecessary.
Provide a normal day/night cycle.
Ambient room lighting is usually sufficient.
Because the species is nocturnal, bright continuous illumination should be avoided.
UVB
UVB lighting is not generally considered essential for routine Damon diadema husbandry.
If lighting is used for plants or display purposes, ensure that:
- The enclosure does not overheat
- Humidity remains appropriate
- Dark retreats remain available
Nocturnal Behaviour
Tailless Whip Scorpions are primarily nocturnal.
During daylight hours they may remain:
- Behind cork bark
- Inside narrow crevices
- Beneath cover
- Motionless against vertical surfaces
They often become much more active after dark.
Diet
Damon diadema is a predator of other invertebrates.
Suitable captive prey includes:
- Crickets
- Cockroaches
- Locusts of appropriate size
- Other suitable captive-bred insects
Prey should be appropriately sized.
Dietary variety is beneficial.
Crickets
Crickets are commonly accepted.
They should be:
- Healthy
- Appropriately sized
- Gut-loaded
- Removed if uneaten
Never leave large numbers of crickets loose in the enclosure.
Cockroaches
Captive-bred feeder cockroaches can make excellent prey.
Choose appropriately sized individuals.
Roaches can provide:
- Good nutrition
- Natural hunting opportunities
- Dietary variety
Avoid wild-caught cockroaches.
Locusts
Appropriately sized locusts may be offered where available.
Large prey capable of injuring the amblypygid should be avoided.
Prey size should reflect the size and condition of the individual animal.
Wild-Caught Prey
Avoid feeding wild insects.
Wild prey can carry:
- Pesticides
- Parasites
- Pathogens
- Environmental contaminants
Captive-produced feeder insects are safer.
Feeding Frequency
Healthy adults generally do not require daily feeding.
An appropriately sized prey item approximately:
once or twice per week
provides a useful starting point.
Adjust feeding according to:
- Age
- Body condition
- Temperature
- Reproductive condition
- Appetite
Juveniles may require smaller prey somewhat more frequently.
Hunting
Amblypygids are fascinating hunters.
The animal may:
- Detect prey with its sensory legs.
- Position itself carefully.
- Approach slowly.
- Strike rapidly with the pedipalps.
- Trap prey between the pedipalp spines.
- Bring the prey to the mouthparts.
This behaviour makes Damon diadema particularly interesting to observe after dark.
Remove Uneaten Prey
Uneaten live prey should be removed.
This becomes especially important when the animal is preparing to moult.
Feeder insects may attack or disturb a vulnerable moulting amblypygid.
Fasting
Temporary refusal of food is not necessarily abnormal.
Possible reasons include:
- Premoult
- Recent large meal
- Environmental disturbance
- Reproductive condition
- Seasonal changes
Monitor body condition rather than assuming every missed meal represents illness.
Handling
Routine handling is not recommended.
Although Damon diadema is not venomous, it is:
- Extremely fast
- Delicate
- Easily dropped
- Capable of defensive pinching
Its long sensory legs are particularly vulnerable to damage.
Speed
A frightened amblypygid can move sideways with extraordinary speed.
This makes free-hand handling risky.
An animal escaping from the hand can disappear behind furniture or suffer a damaging fall within seconds.
Catch-Cup Method
When relocation is necessary, use a catch cup.
A simple method is:
- Position a suitable container near the animal.
- Gently guide it towards the container using a piece of card or soft object.
- Allow the animal to enter voluntarily.
- Secure the container before moving it.
Never grab the legs or pedipalps.
Defensive Behaviour
A threatened Damon diadema may:
- Flatten itself against a surface
- Retreat rapidly
- Raise its pedipalps
- Strike defensively
- Attempt to pinch
These behaviours indicate that the animal wants distance.
Do not deliberately provoke defensive displays.
Can They Hurt People?
A defensive pinch from the pedipalps may be uncomfortable and could potentially break delicate skin.
However, there is:
- No venomous bite
- No sting
- No defensive acid spray
The greater risk during unnecessary handling is often injury to the animal itself.
Moulting
Moulting is one of the most important aspects of amblypygid husbandry.
Before moulting, the animal may:
- Stop eating
- Become less active
- Remain hidden
- Select a suitable vertical surface
Stable environmental conditions are essential.
Moulting Position
Amblypygids usually require a vertical or inverted surface from which they can hang during moulting.
The new animal emerges from the old exoskeleton and must have sufficient clearance for its long legs to expand.
This is why vertical enclosure space is essential rather than optional.
During Moulting
Never disturb a moulting Damon diadema.
During this period:
- Do not handle
- Do not move enclosure furnishings
- Do not spray directly onto the animal
- Remove potentially dangerous live prey
- Maintain appropriate humidity
A freshly moulted individual is extremely fragile.
After Moulting
After emerging, the new exoskeleton requires time to harden.
Do not immediately offer large prey.
Allow the animal to regain:
- Normal colour
- Firmness
- Coordination
before resuming routine feeding.
Failed Moults
Moulting problems can be associated with:
- Inadequate humidity
- Insufficient vertical space
- Disturbance
- Physical obstruction
- Poor general condition
A failed moult can cause permanent deformity or death.
Correct enclosure design is therefore essential from the beginning.
Juveniles
Juvenile Damon diadema require similar fundamental husbandry to adults.
They need:
- Appropriate humidity
- Good ventilation
- Vertical surfaces
- Small prey
- Secure hiding places
- Adequate moulting clearance
Young animals can be particularly delicate during moulting.
Growth
Growth occurs through successive moults.
Juveniles gradually increase in:
- Body size
- Pedipalp development
- Leg span
Development to maturity can take several years depending upon environmental conditions and feeding.
Regeneration
Juvenile arachnids may sometimes partially regenerate damaged appendages through later moults.
However, regeneration should never be relied upon as an excuse for careless handling.
Preventing injury is always preferable.
Sexing
Adult males and females can differ in aspects of:
- Pedipalp proportions
- Genital structures
- Body proportions
Accurate sexing can require experience.
Juveniles can be particularly difficult to sex reliably.
Social Behaviour
Amblypygids are unusual among arachnids because some species demonstrate relatively complex social interactions.
However, this does not automatically mean that every captive Damon diadema should be kept communally.
Communal Housing
Communal housing is sometimes attempted by experienced keepers.
However, risks can include:
- Competition
- Injury
- Cannibalism
- Moulting interference
- Food competition
Individual housing remains the simplest and safest general recommendation.
Breeding
Breeding should be attempted only by keepers familiar with amblypygid behaviour.
Before introducing adults, ensure:
- Both animals are healthy
- Sexes are correctly identified
- The enclosure provides sufficient space
- Behaviour can be monitored
Animals should not simply be placed together without preparation.
Courtship
Amblypygid courtship can involve extensive sensory communication.
The animals may use their antenniform legs to:
- Touch
- Investigate
- Signal
- Coordinate movement
Mating eventually involves transfer of sperm via a spermatophore.
Egg Sac
A gravid female produces eggs that are carried beneath the abdomen.
The eggs remain associated with the female during development.
She should receive minimal disturbance during this period.
Maternal Care
After hatching, the young climb onto the female’s back.
They remain there until after an early moult.
This remarkable behaviour is one of the most fascinating aspects of amblypygid reproduction.
Young on the Mother’s Back
Young amblypygids should not be forcibly removed from the female.
They eventually become independent naturally.
Once dispersed, juvenile housing and feeding requirements must be carefully managed.
Health
Damon diadema is generally hardy when maintained correctly.
Potential problems include:
- Dehydration
- Excessive humidity combined with poor ventilation
- Failed moults
- Physical injury
- Chemical exposure
- Mite outbreaks
- Overheating
Moulting problems represent one of the most significant husbandry risks.
Warning Signs
Possible reasons for concern include:
- Persistent inability to grip surfaces
- Loss of coordination
- Severe unexplained lethargy
- Significant abdominal shrinkage
- Physical injury
- Failed moult
- Persistent abnormal posture
Always check environmental conditions when abnormal behaviour appears.
Damaged Legs
Long appendages can occasionally be damaged.
Possible causes include:
- Rough handling
- Failed moults
- Enclosure accidents
- Attacks from live prey
- Inappropriate communal housing
Never attempt to glue or manually straighten damaged appendages.
Mites
Small organisms may occasionally appear in humid enclosures.
Not every mite is parasitic.
Many are harmless detritivores associated with substrate and food waste.
However, large numbers attached directly to the amblypygid warrant investigation.
Improving enclosure hygiene and identifying the organisms should come before treatment.
Cleaning
Spot-clean regularly.
Remove:
- Prey remains
- Dead feeder insects
- Mouldy material
- Excess waste
Avoid unnecessarily dismantling established retreats.
Deep Cleaning
Complete substrate replacement is generally only required when there is a genuine reason, such as:
- Serious mould
- Pest infestation
- Chemical contamination
- Substrate deterioration
Frequent complete enclosure disruption can create unnecessary stress.
Chemical Sensitivity
Arachnids can be highly vulnerable to chemical exposure.
Keep the enclosure away from:
- Aerosol insecticides
- Flea sprays
- Household pesticides
- Strong cleaning chemicals
- Paint fumes
- Air freshener sprays
Never use insecticide around the enclosure.
Quarantine
New invertebrates should initially be maintained separately from established collections.
Monitor:
- Feeding
- Activity
- Moulting
- Possible mites
- General condition
Use separate equipment where practical.
Wild-Caught Animals
Some Damon entering the pet trade may be wild collected.
Wild-caught individuals may have:
- Unknown age
- Unknown reproductive status
- Parasites
- Injuries
- Collection stress
- Uncertain provenance
Ask sellers about origin before purchasing.
Captive-Bred Animals
Captive-bred individuals should be preferred where available.
Advantages include:
- Reduced wild collection
- Known captive history
- Better traceability
- Potentially known age
Supporting responsible captive breeding helps establish sustainable captive populations.
Correct Identification
Common names such as “tailless whip scorpion” and “whip spider” are applied to many different amblypygid species.
Do not assume every animal sold under these names is Damon diadema.
Where possible, retain:
- Scientific identification
- Breeder information
- Origin
- Photographs
- Parentage information
Correct identification is especially important for breeding.
Legal Considerations
Regulations concerning invertebrate ownership and transport vary between jurisdictions.
Restrictions may apply to:
- Import
- Export
- Collection
- Sale
- Regional transport
Always check current regulations before obtaining or moving the species.
Never Release Captive Amblypygids
Never release a captive Damon diadema into the environment.
Captive animals may:
- Be outside their native range
- Carry pathogens
- Have unknown genetic provenance
If an animal can no longer be maintained, arrange responsible rehoming.
Common Husbandry Mistakes
Common mistakes include:
- Using a low enclosure with insufficient vertical space
- Providing no suitable moulting surfaces
- Poor ventilation
- Keeping the enclosure permanently saturated
- Allowing the enclosure to become too dry
- Excessive heating
- Leaving live prey with a moulting animal
- Handling unnecessarily
- Grabbing the sensory legs
- Assuming the species is dangerous because of its appearance
Avoiding these mistakes substantially improves captive welfare.
Responsible Ownership
Before obtaining Damon diadema, consider:
- Its potentially long lifespan
- Requirement for live prey
- Need for vertical enclosure space
- High humidity combined with good ventilation
- Moulting requirements
- Extremely delicate sensory appendages
- Nocturnal behaviour
- Long periods spent hidden
- Source of the animal
This species is best suited to someone interested in observing natural arachnid behaviour rather than frequently handling their pet.
Summary
The Tailless Whip Scorpion (Damon diadema) is an extraordinary East African amblypygid distinguished by its flattened body, powerful spined pedipalps and extraordinarily long antenniform sensory legs.
Despite its intimidating appearance, it possesses no venomous sting and no venom used for capturing prey. Its primary strategies are concealment, speed and the use of its raptorial pedipalps.
Successful captive husbandry requires a tall, secure enclosure with extensive vertical cork-bark surfaces, appropriate tropical warmth, moderately high humidity, good ventilation, secure crevice retreats, clean water and appropriately sized live invertebrate prey.
Vertical space is particularly critical during moulting. Amblypygids must be able to suspend themselves with enough clearance for their extremely long appendages to emerge and expand correctly. Inadequate moulting space can result in serious injury or death.
Routine handling is unnecessary and potentially risky because the animals are extremely fast and their elongated sensory legs are delicate.
With an appropriately designed enclosure, Damon diadema provides an exceptional opportunity to observe the unusual sensory behaviour, hunting techniques and reproductive biology of one of the most distinctive groups of arachnids.
IMPORTANT INFORMATION
This care sheet provides general husbandry guidance and does not replace current species-specific research, specialist veterinary advice where available or applicable wildlife legislation.
Animals sold under the general names “whip spider” or “tailless whip scorpion” may represent several different species. Confirm scientific identification whenever possible.
Always verify current regulations concerning possession, sale, collection, transport, import and export in your jurisdiction.
Information correct at the date of publication.
reptilecommunity.com | Revised: August 2026