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Species Profile

Giant Desert Centipede

Scolopendra heros

Venom-clawed hunter of the desert night
Scott Delony/Shutterstock.com

Giant Desert Centipede Distribution

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Endemic Species
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Giant desert centipede

At a Glance

Wild Species
Also Known As Red-headed centipede, Texas redheaded centipede, Desert centipede, Southwestern centipede
Diet Carnivore
Activity Nocturnal+
Lifespan 5 years
Status Not Evaluated
Did You Know?

It is one of the largest centipedes in the United States: adults are commonly about 10-18 cm long, with reported maxima around 20 cm in large individuals (e.g., Shelley 2002; Mercurio 2011).

Scientific Classification

Scolopendra heros is a large, venomous predatory centipede native to arid and semi-arid parts of the southern United States and northern Mexico. It is a nocturnal ground-dweller that hunts insects and other arthropods, and can take small vertebrate prey.

Kingdom
Animalia
Phylum
Arthropoda
Class
Chilopoda
Order
Scolopendromorpha
Family
Scolopendridae
Genus
Scolopendra
Species
Scolopendra heros

Distinguishing Features

  • Large, robust scolopendrid centipede (often among the largest in North America)
  • Powerful forcipules (modified first legs) used to inject venom
  • Typically reddish-brown to orange body with contrasting darker posterior legs in many forms; coloration can vary regionally
  • Flattened body with one pair of legs per segment; last pair of legs enlarged and used defensively

Physical Measurements

Length
6 in (4 in – 8 in)
Top Speed
1 mph
Estimated top speed 1.2 km/h
Venomous

Appearance

Primary Colors
Secondary Colors
Skin Type Hard, glossy chitinous exoskeleton (sclerotized tergites) with flexible intersegmental membranes; surface often appears smooth and lacquered; segmented trunk with one pair of legs per segment and terminal 'ultimate legs'.
Distinctive Features
  • Adults are commonly about 10 to 15 cm long, with large ones around 15 to 20 cm. Very large size helps tell Scolopendra heros from the smaller Scolopendra polymorpha, which often has more varied patterns.
  • Arid/semi-arid North American distribution: ground-dwelling under rocks, wood, debris, and in burrows/soil cracks; most active at night (nocturnal).
  • Predatory behavior: an ambush/active hunter of insects and other arthropods; capable of subduing small vertebrates opportunistically (e.g., small lizards or nestling rodents) when encountered.
  • Scolopendra heros uses forcipules (modified front legs) to inject venom. Bites cause sudden, strong pain and swelling. Serious problems are rare in healthy adults but can occur with allergy or infection.
  • Robust head with prominent antennae; large, laterally projecting forcipules; strong, thick trunk segments; ultimate (last) leg pair often enlarged and held elevated defensively-can be mistaken for the head end by predators.

Sexual Dimorphism

Sexual dimorphism is subtle and not reliably diagnostic in casual field views; differences are mostly in overall build and appendage proportions rather than distinct color pattern.

♂
  • Often a slightly more slender overall build in mature males (general scolopendrid trend reported by keepers and some descriptive accounts; not a definitive ID trait).
  • In some individuals, ultimate legs may appear proportionally longer/more gracile, though overlap is substantial.
♀
  • Often a slightly broader, heavier-bodied build when mature; gravid females may appear noticeably more robust through the trunk.
  • Females lay and brood eggs; brooding posture may be observed in concealed nests (behavioral dimorphism rather than appearance).

Did You Know?

It is one of the largest centipedes in the United States: adults are commonly about 10-18 cm long, with reported maxima around 20 cm in large individuals (e.g., Shelley 2002; Mercurio 2011).

The "bite" is actually a stab from venom claws (forcipules)-modified front legs connected to venom glands.

Females provide intense parental care: they coil around the egg mass and newly hatched young, grooming them to reduce fungal growth (general scolopendrid biology: Lewis 1981).

It can take small vertebrate prey (e.g., small lizards or nestling rodents) in addition to insects and other arthropods-especially when the opportunity is low-risk.

It's strongly nocturnal in hot, arid landscapes-spending days in cool, humid refuges under rocks, in crevices, or burrows to avoid dehydration.

Lost legs can regrow over subsequent molts-centipedes commonly regenerate appendages across multiple molts (Lewis 1981).

Despite its fearsome reputation, most human envenomations cause intense localized pain and swelling and are rarely medically serious in healthy adults; severe allergy is possible (clinical reviews of centipede envenomation: e.g., Isbister & Gray 2004).

Unique Adaptations

  • Forcipules (venom claws): a key chilopod innovation-modified first legs that inject venom and mechanically restrain prey; this allows a large arthropod predator to subdue hard-bodied insects and occasionally small vertebrates.
  • Desert survival via behavior: instead of "desert-proof" physiology alone, S. heros relies heavily on selecting humid microrefuges (under rocks, in crevices/burrows) and being active at night to reduce water loss.
  • Tough, flexible exoskeleton with segment-by-segment locomotion: enables squeezing into narrow crevices where prey hide and where humidity is higher.
  • Regeneration through molting: lost or damaged legs can regrow over multiple molts (Lewis 1981), reducing the long-term cost of predation/defense injuries.
  • Powerful ultimate legs: the elongated rear legs are used for anchoring, defense, and tactile sensing behind the animal-useful when reversing in tight refuges.
  • High-speed sensory processing: dense mechanosensory and chemosensory inputs (especially via antennae) support rapid night hunting in low light.

Interesting Behaviors

  • Nocturnal sit-and-stalk predation: emerges after dark, tracking prey with long, sensitive antennae and rapid bursts of speed.
  • Venom delivery and "grappling": seizes prey with forcipules while the trunk legs and ultimate (rear) legs help brace and pin struggling prey.
  • Opportunistic diet shifts: primarily arthropods, but will exploit vulnerable small vertebrates when encountered (especially in confined refuges).
  • Defensive threat display: raises the front body, spreads legs, and pivots to keep the head/forcipules oriented toward a threat; may pinch with the ultimate legs while striking forward.
  • Microhabitat fidelity: repeatedly uses the same shelter site (rock/crevice/burrow) during hot, dry periods when surface activity is costly.
  • Maternal brooding: the female coils tightly around eggs/young and may reduce feeding during brooding (Lewis 1981).
  • Cannibalism risk: like many large scolopendrids, it may prey on other centipedes (including conspecifics), particularly in cramped or food-limited conditions.

Myths & Legends

Japanese folklore includes legends of enormous 'giant centipedes' depicted as mountain-dwelling monsters; in one well-known tale, a warrior slays a giant centipede to save a dragon king's realm-centipedes there symbolize terror, poison, and supernatural threat.

In Chinese folk tales, giant centipedes (Scolopendra heros) are thought to be dangerous spirits linked to poison and hidden places; their image is also part of the 'five poisons' protective symbol.

In some Mesoamerican and other Indigenous American art, centipedes, not specific to S. heros, appear as underworld or earth creatures linked to darkness, crevices, and life at night.

Frontier stories in Europe and America call the Giant Desert Centipede (Scolopendra heros) a warning, a creature of rocks and ruins that appears in bedding or boots to warn people to respect desert shelters.

The species name Scolopendra heros (heros 'hero') is oddly fitting for this fierce hunter and shows how scientific names help shape the stories people tell about an animal.

Conservation Status

NE Not Evaluated

Has not yet been evaluated against the criteria.

Population Unknown

Life Cycle

Birth 35 hatchlings
Lifespan 5 years

Lifespan

In the Wild
2–7 years
In Captivity
5–10 years

Reproduction

Mating System Data Deficient
Social Structure Solitary
Breeding Pattern Transient
Fertilization Internal Fertilization
Birth Type Internal_fertilization

Scolopendra heros is dioecious (separate sexes) and mostly solitary. Males leave a spermatophore; females take it after close courtship with antenna taps and a short dance. The mating system is data-deficient. Females lay eggs, coil around, guard and clean them alone.

Behavior & Ecology

Social Solitary Group: 1
Activity Nocturnal, Crepuscular
Diet Carnivore large, soft-bodied or readily subdued arthropods-commonly Orthoptera (crickets/grasshoppers) and Blattodea (cockroaches)
Seasonal Hibernates

Temperament

Solitary and strongly predatory; spends inactive periods concealed in burrows/under cover and emerges to hunt.
Defensive and often highly reactive when disturbed; may raise anterior body, spread forcipules, and strike readily (venomous bite).
Territorial/refuge-defensive behavior is common (individuals tend to retain and re-use favored shelters).
Opportunistic feeder; capable of taking large invertebrates and small vertebrates relative to its size; cannibalism risk during conspecific encounters (notably in captivity and likely when refuges are limited).
Maternal attendance/guarding behavior in females during reproduction (egg/early-young defense).

Communication

Chemical cues (cuticular/pheromonal signals) likely important for mate finding and sex recognition, as in other scolopendrid centipedes; direct species-specific pheromone compounds for S. heros are not well resolved in published datasets.
Tactile signaling via antennal contact and body tapping during close encounters Assessment/courtship and conflict escalation
Substrate-borne vibration cues produced by locomotion/body movements that can be detected at close range Common in ground-dwelling arthropods; used for threat assessment and prey/predator awareness
Defensive chemical secretions from body glands can function as a deterrent cue to predators and may incidentally signal disturbance to nearby conspecifics.

Habitat

Biomes:
Desert Hot Temperate Grassland Temperate Forest Tropical Dry Forest
Terrain:
Plateau Plains Hilly Mountainous Valley Rocky Sandy +1
Elevation: Up to 8202 ft 1 in

Ecological Role

Nocturnal terrestrial mesopredator in arid and semi-arid ecosystems (desert scrub, grassland, rocky outcrops)

suppresses populations of large insects and other arthropods (top-down control) links detritus-based arthropod production to higher trophic levels by converting invertebrate biomass into prey for vertebrate predators contributes to regulation of arthropod community composition via predation on spiders/scorpions/other myriapods serves as prey for larger vertebrates (e.g., owls, snakes, mammals), supporting desert food webs

Diet Details

Main Prey:
Large insects Cockroach Beetles and beetle larvae Moths and caterpillars Centipede Millipedes Spiders Scorpion Small lizards Small snakes Small amphibians Small mammals +6

Human Interaction

Domestication Status

Wild

The Giant Desert Centipede (Scolopendra heros) is a wild, non‑domesticated species from arid parts of the southern United States and northern Mexico. There is no record of selective breeding. People meet it mostly outdoors under rocks or logs, sometimes indoors. Collectors may keep a few in captivity. Bites can cause intense pain and swelling and it appears in venom studies.

Danger Level

Moderate
  • Painful envenomation from the forcipules ('bite'); typically causes immediate intense localized pain, swelling, erythema, and puncture wounds; secondary infection risk if wounds are not cleaned
  • Systemic symptoms (e.g., nausea, headache, lymphangitis) are possible but less common; severity varies by dose, bite location, and individual sensitivity
  • Allergic reactions are possible; as with other venomous animals, anaphylaxis is a low-probability but serious risk
  • Handling risk is high because S. heros is fast, defensive when threatened, and can bite repeatedly; improper enclosure security increases escape/encounter risk

As a Pet

Not Suitable as Pet

Legality: Giant Desert Centipede (Scolopendra heros) is usually not controlled by U.S. federal law, but state and local rules differ. Some places ban venomous ones or require permits. Check state wildlife laws and city/county rules first.

Care Level: Expert Only

Purchase Cost: $40 - $150
Lifetime Cost: $250 - $900

Economic Value

Uses:
Pet trade (specialty invertebrate hobby) Education/outreach (live animal programs, displays) Research value (venom bioactive compounds; arthropod physiology/behavior) Public health/pest control (costs associated with bites and nuisance removal)
Products:
  • live specimens sold through specialty invertebrate markets
  • husbandry supplies and feeder-insect sales associated with captive keeping
  • specimens (non-lethal sampling or preserved vouchers) supporting taxonomy/ecology work

Relationships

Predators 6

Greater roadrunner
Greater roadrunner Geococcyx californianus
Burrowing owl
Burrowing owl Athene cunicularia
Western coachwhip
Western coachwhip Masticophis flagellum
Striped skunk Mephitis mephitis
American badger Taxidea taxus
Ringtail Bassariscus astutus

Related Species 6

Variable centipede Scolopendra polymorpha Shared Genus
Asian giant centipede Scolopendra subspinipes Shared Genus
Giant Amazonian centipede Scolopendra gigantea Shared Genus
Tropical banded centipede Scolopendra morsitans Shared Genus
Caribbean giant centipede Scolopendra alternans Shared Genus
Eastern bark centipede Hemiscolopendra marginata Shared Family

Ecological Equivalents 5

Animals that fill a similar ecological role in their ecosystem

Variable centipede Scolopendra polymorpha Nocturnal, ground-dwelling venomous ambush hunter in arid and semi-arid areas; shelters under rocks, wood, and in burrows; consumes large arthropods and sometimes small vertebrates. Life history details are poorly known.
Arizona bark scorpion
Arizona bark scorpion Centruroides sculpturatus Both are nocturnal, hide under rocks and debris, and hunt around rock crevices. They use venom to subdue prey and act as important mesopredators in the Sonoran and Chihuahuan deserts, competing for insects and sometimes preying on one another.
Desert tarantula
Desert tarantula Aphonopelma chalcodes Functionally similar: a large, nocturnal, terrestrial ambush predator of desert scrub. Both use burrows or retreats and take large insects and other arthropods. There is potential for prey overlap and occasional antagonistic encounters where their ranges overlap.
Giant vinegaroon Mastigoproctus giganteus Occupies similar refuges (burrows, under rocks and wood) in warm, often arid landscapes, and hunts at night for insects and other arthropods. Although it relies on chemical defense rather than venom, it fills a comparable large nocturnal ground-arthropod predator role.
Sun spider Eremobates spp. A fast, nocturnal and crepuscular desert ground hunter that preys heavily on insects and other arthropods. It overlaps strongly in foraging space (open ground and beneath debris) and is part of the same predatory guild.

The Giant Desert Centipede is the largest centipede in Northern America.

Summary

The Giant Desert Centipede is only found in two major regions but it is known by different names around the world. It is often mistaken for the Desert Centipede, which is a relative, but they both have distinct features that are different from each other. 

Species, Types, and Scientific name

Giant Desert Centipede is referred to as the Scolopendra heros in the scientific world. Its origin is Latin, and it was named by Girard in 1853. It belongs to the order Scolopendromorpha and the family Scolopendridae.

The species has a lot of different names like Giant Desert Centipede, Giant Sonoran Centipede, Texas Redheaded Centipede, and Giant Redheaded Centipede. There are more than 8,000 species of centipede in the world but, the population size of the Giant Desert Centipede is yet to be known. 

They are venomous centipedes, which are the largest in North America. Their population is restricted to only Mexico and some parts of the United States. Although their population is limited, they do not have any special conservation status.  

They only have one species, named the Giant Desert Centipede. 

Appearance: How To Identify Giant Desert Centipede?

Eggs

Around 12 to 60 eggs are laid by a female in one reproductive cycle. They remain in clusters in concealed spaces, under protection from the female Giant Desert Centipede. The females usually lay these eggs in either autumn or summer. She stays on guard until the hatchlings have had their second molting episode. 

Instar

The babies hatch from their eggs after two months. And the hatchlings are more or less the same in their physical attributes as that of an adult. The number of segments is the same throughout its whole life that can carry on for nearly a decade.  

However, it does go through the process of molting to shed its exoskeleton. After molting, they enter a new stage known as an instar. This process repeats a few times until they are old enough to mate. 

Adult

A Giant Desert Centipede measures up to 6.5 inches but it can cross 8 inches if it is out in the wild. It is the largest centipede in North America. 

Their head is flattened and round in shape and has a segmented body. Their head bears a pair of antennae that helps them navigate through their surroundings. This is because they do not have any eyes. 

Their head is sometimes orange in color along with the first part of their segmented body. That is why they are sometimes called “Giant Redheaded Centipede” or “Texas Redheaded Centipede” in various regions. But they exist in different colors. 

When it comes to their body, they have around 26 to 30 segments, each carrying a pair of legs. However, it is hard to determine which end is the mouth and which end is the tail, at times. Their legs are usually yellow and their bodies are often greenish black. They have a pair of elongated mandibles and two pairs of maxillae that can be used to pinch.

Each centipede has around 20 pairs of legs and a set of hind legs at the back of its body. In total, they may have 21 to 23 pairs of legs. Their front limbs have injectors that carry venom inside that can help to bring the prey down. 

Giant desert centipede

The giant desert centipede is the largest centipede in North America.

Their biggest survival instinct is their venomous legs. In addition, they display aposematism. This is a general phenomenon where an animal changes its color to warn the predator that they are poisonous. Since this centipede carries venom in its legs, it warns its predator by changing its color. This keeps both the prey and the predator safe from potential harm. 

They are nocturnal in nature. You can find them hiding during the day and coming out to hunt at night. In addition, although they are poisonous, they are only slightly aggressive. 

Habitat: Where to find Giant Desert Centipede

The Giant Desert Centipede is found only in two countries but its population is quite widespread. Some of the main regions where it is located are Arkansas, Southern Missouri, Louisiana, Kansas, Oklahoma, Texas, New Mexico, Arizona, and Northern Mexico.

They can take residence in any place where there is shelter. They stay hidden in the warmer seasons and are often seen out during cloudy weather. 

You can spot them in rocky woodlands, under rocks, potted plants, decayed wood spaces, and such. They tend to lay eggs under rocks or in concealed spaces so they usually stay hidden. Since they are nocturnal, you can only find them at night trying to hunt down their prey. 

The Venom Of Giant Desert Centipede: How Dangerous Is It?

The Giant Desert Centipede is slightly aggressive in nature. Although it is venomous, its venom is only used to subdue its prey. The venom is capable of paralyzing the nervous system of insects and making it difficult for them to escape. The same goes for smaller vertebrates.

As for other vertebrates like humans, the venom has had different effects. A rat showed it was in incredible pain after the sting of the Giant Desert Centipede but went back to its normal state after a few hours. 

Similarly, when it attacked humans, the bite only caused swelling and sharp pain. This went away after a few hours and it has not produced any fatalities or deaths to date. Now, the venom of the Giant Desert Centipede has not been studied in detail much because it disintegrates quickly. But it has not shown to be much danger. 

Diet: What do Giant Desert Centipedes Eat?

Giant Desert Centipede are carnivorous in nature. They use venom to hunt down their prey but can also reach out in the air to feed on small insects. The centipedes are capable of eating small amphibians and vertebrates because of their larger size.

What Does It Eat?

A Giant Desert Centipede may eat small insects, toads, rodents, and small snakes, and may feed on moths if kept in captivity. 

What Eats Giant Desert Centipede?

Their predators include owls, coyotes, ringtails, bobcats, and badgers.

Prevention: How do I get rid of Giant Desert Centipedes?

The best advice for the Giant Desert Centipede would be to not bother them unless they bother you. This is because if they are provoked, they will be forced to bite you. But if you do come across one hiding out in your home, it is best to steer clear. 

A good rule of thumb is that it is best to set out precautionary measures. The pinch of the Giant Desert Centipede might not be fatal but it is extremely painful, nonetheless. So, here are the prevention tips that you need;

  • Ventilate all the moist spaces around your house because the Giant Desert Centipede prefers the humid environment.
  • Seal all the gaps, crevices, holes, and cracks inside your home and especially the basements and bathrooms.
  • Remove all compost piles, firewood, and fallen logs because this is where centipedes usually reside. 
  • Eradicate all other insects that might be a food source for these centipedes. 

Up Next …

Centipede vs. Silverfish: What are the Differences?
Caterpillar vs. Centipede: What’s the Difference?
Are Centipedes Poisonous or Dangerous?

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Sources

  1. Wikipedia / Accessed August 1, 2022
  2. Family Handyman / Accessed August 1, 2022
  3. Orkin / Accessed August 1, 2022
  4. MDC / Accessed August 1, 2022
  5. Terminix / Accessed August 1, 2022
Alan Lemus

About the Author

Alan Lemus

Alan is a freelance writer and an avid traveler. He specializes in travel content. When he visits home he enjoys spending time with his family Rottie, Opie.
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Giant Desert Centipede FAQs (Frequently Asked Questions)

No, they are not dangerous. They do have a poisonous venom but it is more on the defensive side than the offensive.