What Is the Largest Spider?

The largest spider species is thought to be the camel spider, which measures approximately six inches (15.24cm) and weighs about two ounces (56 g) on average. Camel spiders originate in the Middle East, and are also among the fastest spiders, reaching up to 10 miles (16 km) per hour. Their jaws comprise one-third of the entire length of their body and are used to crush their prey, such as small birds, rodents, lizards, and insects. While they don’t release toxic venom when they bite, the camel spider does release a digestive fluid onto its prey that causes their flesh to liquefy upon contact for easier digestion.

More about the camel spider:

• The camel spider is thought to be named after the old wives’ tale that the creature jumps up and eats the stomach of camels.
• A common myth is that camel spiders chase humans and camels to attack them; however, the spider actually dislikes the open sun and is attracted to the shade provided by larger objects.
• Camel spiders only have eight legs even though it looks like they have 10 – the other two appendages are actually sensory organs.

Frequently Asked Questions

What is the largest spider by leg span?

The title of the largest spider by leg span goes to the giant huntsman spider (Heteropoda maxima), discovered in a cave in Laos. Its leg span can reach up to 12 inches (30 centimeters), making it the largest known spider in terms of leg span, according to researchers who described the species in 2001.

What is the heaviest spider in the world?

The Goliath birdeater (Theraphosa blondi) holds the record for the heaviest spider in the world. Native to the rainforests of South America, this tarantula can weigh over 6 ounces (170 grams). Despite its name, it rarely preys on birds, preferring insects and small terrestrial vertebrates.

Are the largest spiders dangerous to humans?

Despite their intimidating size, the largest spiders, like the giant huntsman and the Goliath birdeater, are not considered deadly to humans. Their venom is not potent enough to cause severe harm, although their bites can be painful. Generally, these spiders are shy and will avoid human contact when possible.

How do spiders become so large?

Spiders can achieve large sizes through a combination of factors, including evolutionary adaptations to their environment, availability of prey, and low predation pressure. For instance, the Goliath birdeater's substantial size is attributed to 'island gigantism,' a phenomenon where limited competition and predators in a confined environment can lead to larger species sizes.

Where can the largest spiders be found?

The largest spiders are typically found in warm, tropical climates where their primary needs—abundant prey and suitable habitats—are met. The giant huntsman spider is native to Laos, while the Goliath birdeater resides in the Amazon rainforest of South America. These environments provide the ideal conditions for such large arachnids to thrive.

How do the largest spiders contribute to their ecosystems?

As apex invertebrate predators, the largest spiders play a crucial role in their ecosystems by controlling insect populations and serving as food sources for larger predators. Their presence indicates a healthy, biodiverse habitat. They also contribute to nutrient cycling by breaking down their prey and enriching the soil with organic matter.