What Are The Fascinating Characteristics Of The Australian Jewel Spider, And How Is It Best Cared For As A Pet?

You may have heard of dogs, cats, or even fish being kept as pets, but have you ever considered owning a jewel spider? The Australian jewel spider, known for its stunning colors and intricate patterns, is a captivating creature that is not often seen in the world of domestic pets. In this article, we will explore the fascinating characteristics of the Australian jewel spider and provide you with tips on how to best care for them as pets. So, if you’re ready to embark on a unique and enchanting pet-owning experience, let’s dive into the world of the Australian jewel spider!

What Are The Fascinating Characteristics Of The Australian Jewel Spider, And How Is It Best Cared For As A Pet?

Physical Characteristics


The Australian jewel spider, also known as Gasteracantha fornicata, is instantly recognizable due to its vibrant and captivating coloration. The body of this spider species is predominantly black, with striking patterns and markings of red, yellow, and white on its abdomen. These colorful designs often resemble jewels, hence the spider’s name. The eye-catching coloration serves as a defense mechanism, warning potential predators about the spider’s venomous nature.


In terms of size, the Australian jewel spider is considered moderate. The female spiders typically measure around 1 centimeter in length, while the males are slightly smaller, reaching about 0.5 centimeters. Despite their relatively small size, these spiders possess an imposing presence due to their bold coloration and unique body structure.

Abdomen and Cephalothorax

The abdomen and cephalothorax of the Australian jewel spider exhibit distinctive characteristics. The abdomen is circular and compact, and it is where the stunning color patterns truly shine. On the other hand, the cephalothorax, which is the fused head and thorax region, is comparatively smaller and more inconspicuous. This body structure allows the spider to maneuver swiftly and efficiently, enabling it to capture prey and escape potential dangers in its environment.

Web Construction


The Australian jewel spider is renowned for its incredible web construction skills. It weaves intricate orb-webs, vertical in nature, which are perfectly designed to capture flying insects. These webs possess concentric circles woven with remarkable precision. The concentric circles serve to increase the surface area of the web and maximize the spider’s chances of capturing prey.

Decorative Techniques

What sets the Australian jewel spider’s web apart is its remarkable decorative techniques. Alongside the concentric circles, the spider intricately weaves patches of zigzag patterns known as “stabilimenta” or “decorations” in the web’s center. These decorations not only enhance the aesthetic appeal of the web but also play a practical role in attracting prey and signaling the presence of the spider to potential mates.

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Sticky Silk

To ensure the success of its hunting endeavors, the Australian jewel spider produces sticky silk to make its web as efficient as possible. This sticky silk is strategically positioned in certain areas of the web, adhering to unsuspecting insects that come into contact with it. Once entangled, the spider can swiftly immobilize its prey and inject venom for digestion.


The Australian jewel spider constructs webs that are designed to withstand various environmental conditions. The silk used in the web is exceptionally strong, providing durability against wind gusts and other weather elements. This ensures the spider’s web remains intact and functional, allowing for successful hunting and survival.

Venom and Hunting

Venom Composition

The Australian jewel spider possesses venom that aids in both hunting and self-defense. The venom contains a complex mixture of proteins and enzymes that work synergistically to immobilize prey and initiate the digestion process. While the venom is potent enough to immobilize insects, it poses no significant threat to humans unless one has an allergic reaction.

Hunting Strategies

To secure a meal, the Australian jewel spider utilizes a combination of strategies. Firstly, its well-crafted web acts as a passive trap, capturing unsuspecting insects that fly into it. Once ensnared, the spider rapidly moves towards its prey and delivers a venomous bite. Alternatively, the spider may actively hunt by ambushing prey that comes within close proximity. Both strategies have proven to be highly effective for the spider’s feeding habits.



The Australian jewel spider exhibits territorial behavior when it comes to defending its web. Once the web is constructed, the spider becomes highly protective of its territory. It aggressively ward off potential threats, such as other spiders or larger predators, ensuring the safety of its home and hunting grounds. This territorial behavior also extends to potential mates, with males needing to approach the female’s web cautiously during courtship.

Courtship and Mating

During the courtship process, the smaller male jewel spider must approach the female’s web with caution. If successful, the male will carefully court the female, often engaging in intricate leg movements and vibrating the web to communicate his intentions. If the female is receptive, mating occurs, and the male must quickly leave the web to avoid becoming the female’s next meal. The female will then proceed to lay eggs, ensuring the continuation of the species.

What Are The Fascinating Characteristics Of The Australian Jewel Spider, And How Is It Best Cared For As A Pet?

Habitat and Distribution

Natural Habitat

The Australian jewel spider inhabits a diverse range of natural habitats, including forests, woodlands, and coastal areas. They prefer areas with abundant vegetation, as it provides an ample supply of prey and suitable locations for web construction. These spiders may also be found in urban environments, adapting to human-altered landscapes such as gardens and parks.

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Geographical Range

The Australian jewel spider is endemic to Australia and can be found across various regions of the country. Their distribution encompasses the eastern and southern parts of Australia, including the coastal areas. The spiders have also been observed in neighboring countries such as New Zealand, likely as a result of human transportation.

Feeding Habits

Prey Selection

The Australian jewel spider is a skilled predator that primarily feeds on flying insects such as flies, mosquitoes, and small bees. Its orb-shaped web is designed to capture these airborne creatures as they become entangled in the sticky silk. The spider’s coloration and web decorations play a crucial role in attracting insects, making them easy targets for the spider’s feeding habits.

Feeding Frequency

The feeding frequency of the Australian jewel spider largely depends on the availability of prey in its environment. When successful in capturing prey, the spider will feed until satiated and then wait for the next opportunity to hunt. As opportunistic predators, these spiders are capable of adjusting their feeding habits to fluctuating prey populations and seasonal changes.

What Are The Fascinating Characteristics Of The Australian Jewel Spider, And How Is It Best Cared For As A Pet?

Captive Care

Enclosure Setup

When considering caring for the Australian jewel spider as a pet, it is crucial to provide a suitable enclosure that mimics its natural habitat. A terrarium with ample climbing structures, vegetation, and hiding spots is recommended. The enclosure should also have proper ventilation and secure lids to prevent escape.

Temperature and Humidity

Maintaining the right temperature and humidity levels is essential for the well-being of the Australian jewel spider. A temperature range of 23-28 degrees Celsius (73-82 degrees Fahrenheit) and a humidity level of around 60-70% are ideal for this species. Monitoring these factors closely will help ensure the spider’s comfort and promote its overall health.

Feeding Regimen

Feeding the Australian jewel spider in captivity typically involves offering live insects such as fruit flies, small crickets, or pinhead roaches. The frequency of feeding depends on the spider’s appetite and size, but generally, adult spiders should be fed every 3-7 days, while spiderlings require more frequent meals. It is crucial not to overfeed, as this can lead to health problems or an unclean enclosure.

Handling Tips

Due to the delicate nature of spiders, it is generally advised to avoid handling the Australian jewel spider unless necessary. Their small size and fragile bodies can make them prone to injury or escape. If handling becomes necessary, extreme caution should be exercised, using appropriate tools and ensuring a calm and controlled environment to minimize stress and potential harm to the spider and handler.

Health and Disease

Common Ailments

The Australian jewel spider is generally resilient and susceptible to few health issues when provided with suitable care. However, inadequate humidity levels, poor ventilation, and unsanitary conditions can lead to bacterial or fungal infections. Parasitic infestations, such as mites, may also occur if the spider’s enclosure is not properly maintained. Regular monitoring and maintaining an optimal habitat can help prevent common ailments.

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Preventive Measures

To maintain the health and well-being of the Australian jewel spider in captivity, several preventive measures should be taken. Providing a clean and appropriately-sized enclosure, regular maintenance and cleaning, regular feeding with appropriate prey items, and maintaining optimal temperature and humidity levels are essential. Additionally, avoiding overcrowding and stress-inducing factors will further promote the spider’s overall health and minimize the risk of diseases.

What Are The Fascinating Characteristics Of The Australian Jewel Spider, And How Is It Best Cared For As A Pet?


Egg Production

After successful mating, the female Australian jewel spider will proceed to produce eggs. She typically lays her eggs within a sac-like structure, known as an “egg sac,” which she attaches to her web or nearby vegetation. The number of eggs produced can vary, ranging from a few dozen to several hundred, depending on factors such as the female’s size, health, and environmental conditions.

Incubation Period

The incubation period for the eggs of the Australian jewel spider generally lasts between 2-4 weeks, depending on environmental factors such as temperature and humidity. During this period, the spiderlings develop within the protective confines of the egg sac, preparing for their emergence into the world.

Spiderling Care

Once the spiderlings hatch, they will remain in the egg sac for a brief period before emerging. At this stage, they are extremely vulnerable and require careful monitoring and care. Providing a suitable environment with appropriate temperature and humidity levels, along with a steady supply of small prey items, is crucial for their survival. As they grow, it is important to gradually transition them to larger enclosures to accommodate their increased size and active nature.

Legality and Conservation

Legal Considerations

Before acquiring and keeping an Australian jewel spider as a pet, it is essential to research and understand the legal considerations regarding ownership and importation. Some regions or countries may have specific regulations or restrictions in place to protect native wildlife and prevent potential ecological disruptions. It is advisable to consult local authorities or exotic pet specialists to ensure compliance with relevant laws and regulations.

Conservation Status

The conservation status of the Australian jewel spider is not currently assessed individually. However, as a part of the larger ecological web, these spiders contribute to the natural balance of their habitats and play a role in controlling insect populations. It is important to respect their natural habitat and conserve biodiversity to ensure the continued survival of this fascinating species and the ecosystems they inhabit.

In conclusion, the Australian jewel spider possesses a myriad of fascinating characteristics that make it a captivating creature to observe. From its striking coloration and intricate web construction to its potent venom and unique hunting strategies, this spider species showcases nature’s adaptability and beauty. When considering keeping the Australian jewel spider as a pet, providing a suitable environment and proper care is crucial to ensure its well-being. By understanding and respecting its natural behaviors and requirements, one can create a harmonious relationship with this remarkable arachnid species.

What Are The Fascinating Characteristics Of The Australian Jewel Spider, And How Is It Best Cared For As A Pet?