Chilean Rose Hair Tarantula, Rosie, Rose-haired Tarantula, Chilean Flame Tarantula
Grammostola rosea
Theraphosidae (Tarantulas), Order Araneae. Key family characteristics include large size, dense hair, and two pairs of book lungs.
Physical Description
A heavy-bodied spider with a robust cephalothorax and a large, oval abdomen. The entire body is covered in dense hairs (setae), including fine urticating hairs on the abdomen. This specimen appears to be a juvenile or 'sling', given its proportions and translucent leg joints.
Size Estimate
Currently approximately 1.5 to 2 inches in leg span. Adults can reach a leg span of 4.5 to 5 inches with a body length of about 2.5 inches.
Coloration & Markings
General pinkish-brown to tan coloration. The carapace often exhibits a metallic rose or copper sheen under bright light. Legs show darker femora with lighter joints; the abdomen has a dark patch where urticating hairs are concentrated.
Web Type
Terrestrial burrower; does not build prey-capture webs. Instead, it lines its burrow with silk and may lay 'trip-wires' of silk around the entrance to detect vibrations from passing prey.
Eye Arrangement
All eight eyes are clustered together on a small mound called an ocular tubercle on the anterior of the carapace, though they provide poor visual acuity, primarily sensing light levels and movement.
Leg Characteristics
Thick, powerful legs covered in tactile hairs and spines. The legs end in two claws and tufts of hair (scopulae) that allow them to grip surfaces. In this juvenile, the 'knees' or joints appear lighter than the surrounding segments.
Venom & Safety Information
Venom Information
The venom is protein-based and designed to immobilize small prey; it is not considered medically significant to humans. It is roughly comparable to a bee sting in potency.
Medical Significance
Low danger level. Bites are rare and usually result only in localized pain and swelling. The main medical concern is the urticating hairs, which can cause severe irritation to human skin, eyes, and respiratory tracts.
Safety Recommendations
If you must move the spider, use a cup and a piece of cardboard rather than your hands. Avoid touching your eyes after handling the enclosure due to potential urticating hairs. Keep the enclosure dry with a small water dish.
Habitat & Behavior
Habitat & Range
Native to the scrubland and desert regions of northern Chile, Bolivia, and Argentina. They prefer arid environments and hide in abandoned burrows or under rocks.
Behavior & Temperament
Known for a generally docile and sluggish temperament, making them popular in the pet trade. They are opportunistic ambush hunters. If threatened, they may kick urticating hairs from their abdomen or, rarely, assume a threat posture.
Diet & Prey
Primarily insectivorous, feeding on crickets, roaches, grasshoppers, and occasionally small vertebrates. They sense prey through vibrations and capture it with a sudden pounce and venomous bite.
Seasonal Activity
In the wild, activity peaks during the warmer, wetter months. In captivity, they remain active year-round but may cease activity and feeding during a pre-molt phase.
Description
This Chilean Rose Hair is a classic representative of the terrestrial New World tarantulas. While currently small, it will grow into a furry, rose-tinted adult. It is a slow-moving, hardy species that plays a vital role as a mid-level predator in South American arid ecosystems.
Key Features
Rose-colored carapace sheen, dense hair covering, terrestrial habit, and the specific eye cluster typical of Theraphosids.
Similar Species
Grammostola porteria (Chilean Common Tarantula), which is often grey rather than pink; and various Aphonopelma species, which usually lack the rose-tinted carapace.
Life Cycle
Females are very long-lived, often reaching 20+ years, while males live significantly shorter lives (5-10 years). Females produce egg sacs containing hundreds of spiderlings. This specimen is in an early growth stage, indicated by frequent molting.
Ecological Importance
Critical for pest control in their native range, consuming large quantities of insects. They also serve as a food source for larger predators like tarantula hawks (wasps) and certain coatimundis.
Conservation Status
Not currently listed by the IUCN, but they are subject to heavy collection for the pet trade, which has led to regulations on their export from Chile.
Interesting Facts
Rose hairs are known for 'fasting' and may go months without eating for no apparent reason. They possess specialized hairs on their legs that allow them to 'taste' the ground as they walk.
Photography Tips
A macro lens is best for capturing the eye cluster. Use diffused side-lighting to highlight the rose-pink sheen on the carapace without creating harsh reflections on the enclosure glass.
Identified: 2026-07-06T20:08:52.161751