science

Giant huntsman spider

Giant huntsman spider is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Giant huntsman spider rather than just read about it. In short: The giant huntsman spider (Heteropoda maxima) is a species of the huntsman spider family Sparassidae found in Laos. It is considered the world's largest spider by leg span, which can reach up to 30 cm (1 ft).

Key takeaways

Giant huntsman spider belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Giant huntsman spider to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Giant huntsman spider from memory before moving on to harder problems.

Reference excerpt

The giant huntsman spider (Heteropoda maxima) is a species of the huntsman spider family Sparassidae found in Laos. It is considered the world's largest spider by leg span, which can reach up to 30 cm (1 ft).

Description The coloration is yellowish-brown with several irregularly distributed dark spots on the rear half. The legs have wide dark bands before the first bend. Like all huntsman spiders, the legs of the giant huntsman spider are long compared to the body, and twist forward in a crab-like fashion. Apart from its size, the H. maxima can be distinguished from other species of Heteropoda by genital characteristics. On males, the cymbium is at least three times longer than the tegulum. The female is distinguished by a characteristically shaped epigyneal field with two anterior directed bands, and the course of their internal ducts. The giant huntsman spider is the largest member of the family Sparassidae, boasting a 30 cm (12 in) leg-span, and 4.6 cm (1.8 in) body-length. The largest known member of the Sparassidae known prior to the discovery of H. maxima was the Australian Beregama aurea (L. Koch, 1875) with a body length of about 4 cm (1.6 in). (Other relatively large members of Sparassidae have been discovered in recent years, including Cerbalus aravaensis, the largest in the Middle East).

Taxonomy and naming Heteropoda maxima was first described in 2001 by Peter Jäger, after being discovered in a cave in Laos. Over a thousand new species of plant and animal were found between 1997 and 2007 in the Greater Mekong Subregion. A representative of the World Wide Fund for Nature stated that "some of these species really have no business being recently discovered", suggesting that it is surprising for such a large species to go undiscovered for so long.

Distribution and habitat The giant huntsman spider is found in Laos, and is believed to be a cave dweller because of its pale colour, long legs and special hairs on the second foot of the male. There is no apparent reduction of the eyes, possibly because the species lives near cave entrances.

Cannibalism Florian and Diana Schnös discovered cannibalism within the species of giant huntsman spiders in a cave near Vang Vieng in Laos. Female individuals may eat male individuals after mating, a characteristic more commonly associated with the genus Latrodectus, the true widows, although it is considered normal spider behavior.

See also Goliath birdeater (Theraphosa blondi), largest known spider in the world by mass Mongolarachne jurassica, the largest known fossilized spider Cerbalus aravaensis, a huntsman spider found in Israel and Jordan

References

Further reading Bayer, Steffen; Jaeger, Peter (June 2009). "Heteropoda species from limestone caves in Laos (Araneae: Sparassidae: Heteropodinae)". Zootaxa. 1 (2143): 23. Retrieved 29 April 2015.

Illustrations

Worked examples

Example 1 — a first encounter with Giant huntsman spider

Start with the simplest possible case. Write down what Giant huntsman spider claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Giant huntsman spider before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Giant huntsman spider ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Giant huntsman spider

In research: Giant huntsman spider appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Giant huntsman spider in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Giant huntsman spider is common in secondary-school and first-year university syllabi. It links to neighbouring topics Animal cannibalism, Endemic fauna of Laos, Sparassidae, so understanding it makes those chapters shorter.
In everyday life: Look for Giant huntsman spider outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Giant huntsman spider in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Giant huntsman spider means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Giant huntsman spider out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Giant huntsman spider in simple terms?

Why does Giant huntsman spider matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Giant huntsman spider?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Giant huntsman spider.