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Species Profile

Chilean Rose Tarantula

Grammostola rosea

Chile's "rose" with a hidden defense
iStock.com/warren farnell

Chilean Rose Tarantula Distribution

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Endemic Species
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Found in 1 country

Chilean Rose Tarantula

At a Glance

Wild Species
Also Known As Rose hair tarantula, Rose-haired tarantula, Rosehair tarantula, Rose hair
Activity Nocturnal+
Lifespan 8 years
Weight 0.03 lbs
Status Not Evaluated
Did You Know?

Adult females are typically ~50-60 mm body length, with a diagonal leg span commonly ~120-140 mm in captivity reports for this species.

Scientific Classification

A New World tarantula (family Theraphosidae) native to parts of Chile, widely known as a hardy, commonly kept pet tarantula under the name “Chilean rose.”

Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae
Family
Theraphosidae
Genus
Grammostola
Species
rosea

Distinguishing Features

  • Robust, terrestrial tarantula with variable coloration (brown/gray to warmer tones); some individuals show a pinkish or rosy sheen on hairs
  • New World tarantula: can defend by flicking urticating hairs from the abdomen
  • Slow-moving, generally docile temperament relative to many tarantulas (individual temperament varies)
  • Taxonomically and in the hobby, commonly confused with Grammostola porteri

Physical Measurements

Males and females differ in size

Length
5 in (4 in – 5 in)
5 in (4 in – 6 in)
Weight
0 lbs (0 lbs – 0 lbs)
Top Speed
1 mph
No measured speed; estimated slow
Venomous

Appearance

Primary Colors
Secondary Colors
Skin Type Hard chitinous exoskeleton densely covered in setae (hair-like cuticular structures); abdomen bears New World urticating hairs used as a primary defense. Terrestrial tarantula with thick, robust limbs adapted for ground-dwelling in dry/scrub habitats.
Distinctive Features
  • New World theraphosid with urticating hairs on the abdomen; primary defense is hair-flicking and threat posture rather than medically significant venom for humans (typically mild effects when bites occur).
  • Terrestrial, heavy-bodied build; adult females commonly reported around ~5-6 cm body length with legspans often cited in the ~12-14 cm range (variation occurs with sex, maturity, and taxonomic ambiguity in the 'Chilean rose' complex).
  • Dense, plush setae give a matte-to-satin 'velvet' look; some individuals show a faint pink/rose sheen under certain lighting or soon after molts.
  • Carapace often shows subtle radial shading/striations through the hair coat; legs appear stout with noticeable joint contrast in darker individuals.
  • Behavior relevant to appearance/defense: commonly adopts a low, calm posture; when defensive may raise front legs and/or flick urticating hairs from the abdomen (visible as a disturbed patch of shorter hairs over time).
  • Longevity strongly sex-skewed as in many tarantulas: females commonly documented living ~15-20+ years in captivity; mature males typically live only a few years (often ~3-6 years total, with a shorter period after maturity).

Sexual Dimorphism

Sexual dimorphism is typical of theraphosid tarantulas and becomes obvious at maturity: females are larger and more robust; males become leggier and develop mating structures. Color differences are usually subtle compared with size/proportion differences and overall intraspecific variability.

  • Generally smaller abdomen and overall mass but proportionally longer legs and a slimmer appearance at maturity.
  • Mature males develop palpal bulbs on the pedipalps (used for sperm transfer).
  • Mature males develop tibial apophyses ('tibial hooks/spurs') on the first pair of legs, used to restrain the female's fangs during mating.
  • Adult lifespan is shorter; appearance often becomes more 'leggy' and less bulky as maturity approaches.
  • Larger, heavier-bodied, with a broader abdomen and sturdier overall proportions.
  • No palpal bulbs or tibial apophyses; retains a more robust terrestrial build through adulthood.
  • Typically much longer-lived (often reported ~15-20+ years in captivity), which also means females are more commonly seen at full adult size for extended periods.

Did You Know?

Adult females are typically ~50-60 mm body length, with a diagonal leg span commonly ~120-140 mm in captivity reports for this species.

Females can live 15-20+ years in captivity; mature males commonly live ~3-6 years, reflecting strong sex-based lifespan differences typical of theraphosids.

As a New World tarantula, it can "kick" urticating hairs from its abdomen-an irritant defense (urticating setae types for theraphosids were classically described by Cooke, Roth & Miller, 1972).

It's an ambush predator: rather than chasing prey, it often waits at a retreat entrance and strikes when insects wander close.

Color is variable: individuals sold as "rose," "red," or "brown" can show different hues-one reason the pet trade historically mixed up Grammostola rosea with the closely related G. porteri.

Like other tarantulas, it grows by molting; before molts it may seal itself in a retreat and fast for weeks to months.

Mature males develop specialized mating structures (e.g., tibial hooks/apophyses and palpal bulbs) and become more mobile as they search for females.

Unique Adaptations

  • Urticating hairs (New World defense): detachable abdominal setae that mechanically irritate skin and mucosa of predators, reducing reliance on venom for defense.
  • Arid-land tolerance: behaviorally conserves water by staying in humid microclimates (burrows/under stones) within Chile's dry scrub/steppe habitats.
  • Silk as infrastructure: uses silk not for prey-capture webs but for lining retreats, anchoring soil, and sensing vibrations from approaching prey or threats.
  • Hydraulic limb extension: like other spiders, extends legs using hemolymph pressure rather than extensor muscles, enabling powerful, sudden strikes.
  • Slow life history: delayed maturation and very long-lived females (often 15-20+ years in captivity) fit a strategy of low metabolism and high adult survival.

Interesting Behaviors

  • Sit-and-wait hunting: typically remains motionless near a burrow/retreat, striking rapidly when prey comes within reach.
  • Defensive hair-flicking: uses the hind legs to brush urticating hairs off the abdomen toward a perceived threat; often preferred over biting.
  • Threat display: may raise the front legs and expose fangs if cornered, but commonly chooses retreat or hair-flicking first (New World theraphosid pattern).
  • Retreat engineering: lines burrows or under-rock shelters with silk, helping stabilize loose soil and provide a vibration-sensitive "trip line."
  • Seasonal male roaming: after the final molt, males wander more widely to locate females, increasing daytime visibility compared with sedentary females.
  • Extended fasting: can refuse food for long periods, especially pre-molt or during cooler/drier conditions, supported by a low metabolic rate typical of many terrestrial tarantulas.

Cultural Significance

Grammostola rosea, the "Chilean rose", is a well-known pet tarantula that is calm and tough. Its name is mixed up with Grammostola porteri. In Chile, large tarantulas are seen in dry scrub, burrows, under stones, and near homes.

Myths & Legends

"Chicken spider": In parts of Chile and nearby regions, large tarantulas are popularly nicknamed chicken spiders, reflecting a traditional rural belief that they hunt chicks or gather near chicken coops.

Danger-tale storytelling: rural spider lore often portrays large tarantulas as dangerously venomous to people or livestock; such stories circulate as cautionary narratives told to children and visitors in the countryside.

In pet shops people say the "rose" in Chilean rose tarantula comes from a pink sheen on some spiders. This makes them seem pretty, like a decoration, despite common spider fear.

Conservation Status

NE Not Evaluated

Has not yet been evaluated against the criteria.

Population Unknown

Life Cycle

Birth 250 spiderlings
Lifespan 8 years

Lifespan

In the Wild
2–15 years
In Captivity
3–25 years

Reproduction

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

The Chilean rose tarantula (Grammostola rosea) is solitary and New World. Males mature sooner and roam; females stay put. Mating uses a sperm web, pedipalps, and sometimes mating hooks; females store sperm, make and guard egg sacs. Mating is promiscuous; sexual cannibalism can occur.

Behavior & Ecology

Social Solitary Group: 1
Activity Nocturnal, Crepuscular
Diet Insectivore Medium-sized orthopterans (crickets/grasshoppers) and roaches (common high-acceptance prey in both field observations of theraphosids and captive feeding records for Grammostola rosea).
Seasonal Hibernates

Temperament

Generally sedentary ambush predator that spends long periods in or near a retreat; foraging and mate-searching increase during low-light hours (nocturnal/crepuscular), consistent with many terrestrial theraphosids (Foelix, 2011).
Typically tolerant of disturbance compared with many other theraphosids (basis of its common reputation in captivity), but individuals vary markedly ("HUBS" pattern: a generally calm baseline with outliers that are more defensive/flighty).
Primary defenses are threat postures (raising anterior legs, exposing chelicerae) and use of urticating hairs when provoked; biting is possible but usually a last resort (New World theraphosid defensive repertoire summarized in Foelix, 2011).
Sex/age variation ("HUBS"): adult males tend to roam while searching for females (more exposed/active), whereas adult females are more site-faithful and retreat-oriented; juveniles may be more prone to rapid fleeing responses.

Communication

None documented as airborne acoustic calls; communication is not via true vocalization in this species Spiders lack vocal organs; Foelix, 2011
Substrate-borne vibrations/tactile signaling: courtship 'drumming'/vibration patterns transmitted through ground/silk during mate approach Theraphosid courtship communication; Foelix, 2011
Chemical communication via pheromones: females' silk/draglines can provide chemical cues used by males to locate receptive females Spider pheromonal communication broadly reviewed in Foelix, 2011
Silk-based signaling: deposition of silk Draglines/retreat silk) functions as both a physical and chemical information channel (Foelix, 2011
Threat display and tactile escalation: posturing, striking, and physical contact are used in close-range interactions Defensive behavior consistent with theraphosids; Foelix, 2011
Urticating hair release as a defensive signal/weapon: rapid brushing/flicking of abdominal setae toward a perceived threat; effectiveness depends on target sensitivity and individual propensity New World theraphosid trait summarized in Foelix, 2011

Habitat

Biomes:
Mediterranean Desert Cold Temperate Grassland
Terrain:
Hilly Valley Plains Rocky Sandy
Elevation: Up to 6561 ft 8 in

Ecological Role

Ground-dwelling ambush mesopredator in arid-to-semiarid habitats of Chile; regulates local invertebrate communities and links detrital/insect biomass to higher trophic levels.

Top-down control of insect and other arthropod populations (including pest species) Energy transfer within terrestrial food webs (prey for birds, small mammals, and reptiles) Local nutrient cycling via prey remains and discarded molts around retreats/burrows

Diet Details

Main Prey:

Human Interaction

Domestication Status

Wild

Grammostola rosea (Chilean Rose Tarantula) is a wild species, not domesticated, but kept as a pet and traded worldwide since the late 20th century. Husbandry knowledge comes from hobbyists, not breeding programs. Taxonomy has been confused; use current references (e.g., World Spider Catalog). Human interactions: wild collection, captive breeding, education, persecution, research, habitat loss, and urticating hairs.

Danger Level

Moderate
  • Defensive urticating hairs: can cause pruritic dermatitis; hairs can be medically significant if they contact eyes/airways (risk of ocular irritation/injury), which is a primary hazard in many New World theraphosids (classically described in theraphosid literature such as Cooke, Roth & Miller 1972).
  • Bite/venom: typically considered medically mild in most healthy adults for Grammostola spp.; localized pain, swelling, and secondary infection risk are possible. Serious outcomes are uncommon but hypersensitivity/allergic reactions are possible.
  • Handling-related injury to the spider: a common human-animal interaction risk is the tarantula falling from hands and suffering fatal abdominal rupture; this is a welfare risk rather than a direct human hazard.

As a Pet

Suitable as Pet

Legality: Chilean rose tarantula (Grammostola rosea) is usually legal in many places (e.g., much of the U.S. and EU) and not CITES-listed. Laws and import/export rules can differ—check local rules and prefer captive-bred.

Care Level: Easy

Purchase Cost: $20 - $80
Lifetime Cost: $200 - $800

Economic Value

Uses:
Pet trade Captive breeding/retail Education and outreach Research (venom/physiology; limited scale)
Products:
  • live specimens (captive-bred and historically wild-caught)
  • husbandry supplies market demand (enclosures, substrates, feeders)
  • educational display animals

Relationships

Predators 5

Tarantula-hawk wasp
Tarantula-hawk wasp Pompilidae
Burrowing owl
Burrowing owl Athene cunicularia
Southern crested caracara Caracara plancus
Culpeo Lycalopex culpaeus
Chilla Lycalopex griseus

Related Species 7

Chilean rose tarantula
Chilean rose tarantula Grammostola porteri Shared Genus
Chaco golden knee tarantula Grammostola pulchripes Shared Genus
Brazilian redrump tarantula Grammostola actaeon Shared Genus
Brazilian black tarantula
Brazilian black tarantula Grammostola iheringi Shared Genus
Mexican redknee tarantula
Mexican redknee tarantula Brachypelma smithi Shared Family
Chilean flame tarantula Euathlus sp. Shared Family
Arizona blond tarantula
Arizona blond tarantula Aphonopelma chalcodes Shared Family

Ecological Equivalents 4

Animals that fill a similar ecological role in their ecosystem

Chilean common tarantula Grammostola porteri For Grammostola rosea, the closest niche match is a ground-living New World theraphosid in the same region and genus. Terrestrial and burrow-associated — an ambush predator in Chilean scrub and steppe — mostly quiet and living in burrows, with similar defenses (urticating setae) and pet sizes around 12–14 cm. Wild data are limited.
Chilean flame tarantulas Euathlus spp. Chilean theraphosids occupying arid to Mediterranean habitats; generally nocturnal/crepuscular and reliant on silk-lined retreats/burrows and ambush feeding on ground-active arthropods.
Mexican red-knee tarantula Brachypelma hamorii New World terrestrial theraphosid with life-history and ecological traits comparable to many pet-trade tarantulas: terrestrial habit, slow growth, long-lived females in captivity, low-metabolism ambush predation, and use of urticating hairs for defense. Included as a functional analogue rather than a geographic co-occurrence.
Arizona blond tarantula
Arizona blond tarantula Aphonopelma chalcodes Occupies a similar functional role as a ground-dwelling nocturnal ambush predator in North American deserts. Serves as a useful ecological comparison for behaviors such as retreat fidelity, low activity, and opportunistic predation, even though it is not sympatric with G. rosea.

The most popular tarantula in the pet trade.

Chilean rose tarantulas are medium-sized tarantulas with rose colored hair. They are found in the South American countries of Chile, Argentina and Bolivia. Because of their docile temperament and pinkish hue they are one of the most common tarantulas in the pet trade. As adults they can have a leg span up to 4-5 inches with the females being bigger than the males. Females have a life span that is more than 20 years.

Amazing Chilean Rose Tarantula Facts

  • They bodies and legs are covered in tiny bristles or hairs.
  • Chilean rose tarantulas can adapt to a variety of habitats.
  • They can be kept as pets and are easy to care for.
  • Males and females go through molting to accommodate their growing bodies.
  • They live in burrows in the ground and are nocturnal.

Chilean Rose Tarantula Scientific name

The scientific name of the Chilean rose tarantula is Grammostola rosea. Roseais Latin for “rose like” or “rosy”, referring to the pinkish hairs that cover their bodies. Other common names include Chilean rose hair tarantula, Chilean fire tarantula, Chilean red-haired tarantula and flame tarantula. In the pet trade they are sometimes affectionately referred to as Rosies.

Chilean Rose Tarantula Appearance

Chilean Rose Tarantula

Chilean rose tarantulas are burrowing animals that can live in a variety of habitats. They are found in both dense jungles and dry deserts.

There are three different colorations of the Chilean rose tarantula. Their bodies are all about the same color, dark gray, but the hair colors vary. One type has mostly grayish hairs with a few pinkish hairs interspersed. Another has mostly pink hairs and a third has a bright copper color. Quick note that they don’t actually have “hair” with the bristles actually being called setae, however for the familiarity of their look we will refer to it as hair.

When they reach adulthood they get to be around 3 inches long, the same length as a credit card, with a leg span of 4-5 inches. The females are a little more stout than the males. They have eight segmented legs along with two pedipalps at the front of their body that look like an extra set of arms. They are used for grabbing and holding prey and the males use them in mating.

Chilean Rose Tarantula Behavior

Chilean rose tarantulas are burrowing animals that can live in a variety of habitats. They are found in both dense jungles and dry deserts. They spend most of their time buried deep in their burrows only coming out at night to hunt for food. Chilean rose tarantulas are solitary animals with only one tarantula living in each hole. The entrance to the burrow is covered with a web to protect it.

At night Chilean roses come out to hunt for their prey. They use their size to overpower smaller animals like crickets, roaches, and grasshoppers. They grab their prey, bite with their fangs, inject it with venom and then ball it up with their webs. Using digestive juices they liquefy their victim before sucking their insides up for dinner. They can actually go for months without eating.

If a tarantula is threatened they can flick the urticating hairs off their back causing an irritation to the predator. They may also rear up on their back legs and wave their front legs, making a hissing noise to intimidate the predator.

Another unique behavior of Chilean rose tarantulas is that they secret silky webs from their feet, not just from their abdomens like other spiders. One research study showed how Chilean rose tarantulas were able to cling the side of a smooth vertical surface, like a glass aquarium, by making webs with their feet.

Chilean rose tarantulas are docile and have an easy going temperament. They rarely bite which is another reason they make good pets. They can be a little too low key as pets at times having periods where they move little to none, making them less exciting to watch.

Chilean Rose Tarantula Habitat

The habitat of Chilean rose tarantulas is grasslands, dense jungles or dry deserts. They live in Chile, Argentina and Bolivia. Most of the ones found in pet stores in North America are imported wild caught ones from Chile.

They seem to be able to adjust to a variety of habitats including the harsh climates of the Atacama Desert. They are equipped to dig deep into the ground to adjust to the current temperatures. Some will move into an abandoned burrow of other animals while others will dig their own. Coming out at night to hunt helps them avoid the hottest times of the day in the desert.  

Chilean Rose Tarantula Predators and Threats

Predators of Chilean rose tarantulas include snakes, lizards, some birds, and tarantula hawks. Tarantula hawks are large wasps that can get to be 2 inches long. They have a metallic blue body with dusty orange wings. They actually capture and bury tarantulas alive, not saving them for a later meal for themselves but preparing for the first meal of their young. Before they bury the tarantula the female lays one egg on the tarantula’s abdomen then seals the spider in a burrow. When the wasp larvae hatch it starts devouring the tarantula. Harsh!

One tactic Chilean rose tarantulas use to avoid predators are to stay hidden in their burrows during daylight hours. During the night their setae (or bristles) work like sensory structures to alert them to movement. They do have fangs and can bite releasing a venom which they also use as a defense mechanism, although they are more likely to flee than fight.

 What Eats Chilean rose Tarantulas?

Snakes, lizards, some birds, and tarantula hawks (a wasp) eat Chilean rose tarantulas.  

What Do Chilean Rose Tarantulas Eat?

Chilean rose tarantulas diet consists mostly of insects like crickets, grasshoppers and roaches but it will also eat small lizards, frogs and mice. They can go for months without eating which seems to be an adaptation due to the harsh conditions they may live in. For captive Chilean rose tarantulas it is recommended to feed them 6-8 crickets a month in the warmer months and they only need 1-2 crickets a month in the cooler months. Not big eaters!

What is the Conservation Status of Chilean Rose Tarantulas?

Chilean rose tarantulas are not listed by the IUCN as a threatened species. They are readily available in the pet trade so they seem to have a healthy population.

Reproduction, Babies, and Lifespan

When male Chilean rose tarantulas reach maturity, somewhere between 5-8 years old, they leave their burrows in search of a mate. When they find a burrow of a female they use their leg to tap near the entrance of the burrow. If the female is ready to mate she will come out of her burrow and the passive aggressive dance will begin. The male instinctively knows that the female will try to eat him so he must carefully try to hold her in place to deposit his sperm while avoiding being eaten. He transfers his sperm to a sperm web, then onto his pedipalp to insert into the female. If the male gets away he may mate with other females. Even if he does initially survive, the males die a few months after mating.

Female Chilean rose tarantulas lay around 50-200 eggs each year. They create an egg sac by spinning a web around them to keep them safe. The mother then keeps the sac in her burrow watching over the eggs. She will turn them periodically to keep the sac even. Tiny spiderlings hatch within a few weeks and spend another few weeks underground in their mothers burrow before venturing out.

Before getting Chilean rose as a pet be sure you are aware that they can live a long time. The lifespan of females is really unknown because they have been introduced as pets not yet 20 years ago. However it is assumed they are similar to other tarantulas with the females living 20-25 years. The males have a much shorter lifespan averaging 7-8 years with 10 years being reached by some. The males mate after their final molt and then are either killed by their female mate or die a few months after mating.

Population

Due to the wide range of their habitat and their burrowing lifestyle it is difficult to get an accurate count. They are not hard to find in the pet trade so it seems they have a healthy population.

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Sources

  1. American Tarantula & Animals / Accessed October 19, 2022
  2. Tarantulas / Accessed October 19, 2022
  3. Smithsonian's National Zoo & Conservation Biology Institute / Accessed October 19, 2022
Cindy Rasmussen

About the Author

Cindy Rasmussen

I'm a Wildlife Conservation Author and Journalist, raising awareness about conservation by teaching others about the amazing animals we share the planet with. I graduated from the University of Minnesota-Morris with a degree in Elementary Education and I am a former teacher. When I am not writing I love going to my kids' soccer games, watching movies, taking on DIY projects and running with our giant Labradoodle "Tango".
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Chilean Rose Tarantula FAQs (Frequently Asked Questions)

Yes, they are docile and don’t seem to mind being handled.