What Are The Biggest Spiders On Earth?

by | Jul 5, 2024 | Glossary and FAQs

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The biggest spiders on earth, including the Goliath birdeater and the huntsman spider, attract and frighten with their enormous size and striking features. These spider giants have unique adaptations, ranging from strong venom to remarkable hunting techniques, making them intriguing entomology subjects. With their elaborate webs and intimidating features, spiders have long captivated and terrified people. A few stand out among the thousands of species due to their massive size. This article examines the most enormous spiders on earth, examining their habitats and distinguishing traits.

Biggest Spiders on Earth

1. Goliath Bird Eater (Theraphosa blondi)

The Goliath Birdeater, native to South American rainforests, mainly Brazil, Venezuela, and Guyana, is widely regarded as the biggest spider on earth in terms of bulk and size. This tarantula may weigh up to 175 grammes and have a leg span of approximately 30 cm (12 inches). Despite its name, it rarely eats birds, preferring insects, frogs, and small rodents. The Goliath Birdeater is notable for its protective behaviour, which includes hissing and producing stinging hairs to scare off predators.

What are the Biggest Spiders on Earth?

2. Giant Huntsman Spider (Heteropoda maxima)

The Giant Huntsman Spider, discovered in a cave in Laos in 2001, has the most extended leg spread, measuring up to 30 centimetres (12 inches). Unlike burrowing tarantulas, the Giant Huntsman belongs to the Sparassidae family, which is recognised for its speed and agility. It is mainly found in Laos and neighbouring regions, where it lives in caves and forests. Its large legs and quick movements make it an effective predator of insects and small vertebrates.

3. Brazilian Salmon Pink Birdeater (Lasiodora Parahybana)

The Brazilian Salmon Pink Birdeater, native to Brazil, is another powerful spider. With a leg span of up to 28 centimetres (11 inches) and a body length of about 10 centimetres (4 inches), this tarantula is distinguished by its remarkable pinkish-red leg patterns. It lives in the forested areas of northeastern Brazil and preys on a range of tiny animals, including insects and amphibians. Despite its size, it is a widespread species in the exotic pet trade because of its kind temperament.

4. Grammostola Anthracina

Grammostola anthracina is a strong tarantula found in Uruguay, Paraguay, Argentina, and Brazil. Its leg spans can reach up to 26 centimetres (10 inches). This spider loves grasslands and semi-arid areas, where it builds burrows. It is known for its peaceful demeanour and eats primarily insects and tiny animals. Grammostola anthracina is also a popular species among tarantula fans, and it is known for its small size and simplicity of maintenance.

5. Colombian Giant Tarantula (Megaphobema robustum)

The Colombian Giant Tarantula, found in the rainforests of Colombia and Brazil, is well-known for its defensive tactics and enormous size. It can have a leg span of up to 23 centimetres (9 inches) and a body length of approximately 7.5 centimetres (3 inches). When threatened, this tarantula engages in intriguing behaviours such as rearing up and whirling in circles. It eats insects, amphibians, and occasionally small animals.

In conclusion, Spiders are abundant and diverse, with some species reaching incredible sizes that enthral and intimidate. The Goliath Birdeater, with its enormous size and leg spread, and the Giant Huntsman Spider, with its record-breaking reach, are outstanding examples of nature’s extremes. These spiders and the Brazilian Salmon Pink Birdeater, Grammostola anthracina, and Colombian Giant Tarantula demonstrate arachnids’ fantastic diversity and adaptability.

While these biggest spiders on earth may arouse terror, they play critical roles in their environments, controlling insect populations and ensuring ecological equilibrium. Spiders may adapt to various situations, including South American rainforests and Laotian caves. Understanding and enjoying these magnificent species can help reduce fear and boost conservation efforts, ensuring that these giants continue to thrive in natural habitats.

Also Read: Soil Microbes: The Invisible World Beneath Our Feet



  • Dr. Emily Greenfield

    Dr. Emily Greenfield is a highly accomplished environmentalist with over 30 years of experience in writing, reviewing, and publishing content on various environmental topics. Hailing from the United States, she has dedicated her career to raising awareness about environmental issues and promoting sustainable practices.

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