biology

Robinson's banded langur

Robinson's banded langur is a biology 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 Robinson's banded langur rather than just read about it. In short: Robinson's banded langur (Presbytis robinsoni), also known as Robinson's banded surili, is a species of monkey in the family Cercopithecidae. It was formerly considered a subspecies of the Raffles' banded langur Presbytis femoralis, but genetic analysis revealed that it is no more related to Raffles' banded langur than it is to several other Presbytis species.

Key takeaways

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

Reference excerpt

Robinson's banded langur (Presbytis robinsoni), also known as Robinson's banded surili, is a species of monkey in the family Cercopithecidae. It was formerly considered a subspecies of the Raffles' banded langur Presbytis femoralis, but genetic analysis revealed that it is no more related to Raffles' banded langur than it is to several other Presbytis species. It lives in the northern Malay Peninsula, including southern Burma and Thailand. It is listed as near threatened by the IUCN.

References

Illustrations

Worked examples

Example 1 — a first encounter with Robinson's banded langur

Start with the simplest possible case. Write down what Robinson's banded langur claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Robinson's banded langur 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 Robinson's banded langur 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 Robinson's banded langur

In research: Robinson's banded langur appears in biology 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 Robinson's banded langur 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: Robinson's banded langur is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arboreal mammals, IUCN Red List near threatened species, Mammals described in 1910, so understanding it makes those chapters shorter.
In everyday life: Look for Robinson's banded langur 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 Robinson's banded langur in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Robinson's banded langur 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 Robinson's banded langur out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Robinson's banded langur in simple terms?

Why does Robinson's banded langur matter?

Because it connects several biology 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 Robinson's banded langur?

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 Robinson's banded langur.