biology

Pseudoeurycea exspectata

Pseudoeurycea exspectata 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 Pseudoeurycea exspectata rather than just read about it. In short: Pseudoeurycea exspectata, also known as the Jalpa false brook salamander, is an extinct species of salamander in the family Plethodontidae. It was endemic to Guatemala.

Key takeaways

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

Reference excerpt

Pseudoeurycea exspectata, also known as the Jalpa false brook salamander, is an extinct species of salamander in the family Plethodontidae. It was endemic to Guatemala.

Description Jalpa false brook salamanders looked extremely similar to the closely related Pseudoeurycea goebeli, differing by lacking light marbling on the underside of their tail, having a lighter upper tail surface, and having darker legs. They were robust, with short, blunt snouts. The ventral side of their body was a dark gray-blue, while their dorsal side was a dark reddish-brown.

Distribution and habitat The Jalpa false brook salamander was endemic to Guatemala, and was the southeastern-most member of its genus. The species was only known from its type locality, a broadleaf forest west of Cerro Miramundo at an elevation of 2525 meters (8284 feet). It was believed that they also inhabited nearby isolated volcanic peaks. In their habitat, Jalpa false brook salamanders could be found within or beneath damp, rotten logs, living inside burrows made by wood-boring beetles. They were also found on bromeliads.

History The holotype was collected on March 21, 1952, by herpetologist Laurence Cooper Stuart, and formally described in 1954. It used to be a relatively common species in its range, but habitat loss due to logging and livestock farming caused the population to dramatically decrease. The last known sighting occurred in 1976. Ten trips to the type locality to search for the salamander between 1985 and 2000 did not record the species, and it was added to the IUCN Red List as Critically Endangered in 2004. Eight more searches for the salamander between 2005 and 2018 failed to find any, and it was declared extinct after by the IUCN in August 2019.

References

Worked examples

Example 1 — a first encounter with Pseudoeurycea exspectata

Start with the simplest possible case. Write down what Pseudoeurycea exspectata 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 Pseudoeurycea exspectata 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 Pseudoeurycea exspectata 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 Pseudoeurycea exspectata

In research: Pseudoeurycea exspectata 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 Pseudoeurycea exspectata 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: Pseudoeurycea exspectata is common in secondary-school and first-year university syllabi. It links to neighbouring topics Amphibians described in 1954, Amphibians of Guatemala, Endemic fauna of Guatemala, so understanding it makes those chapters shorter.
In everyday life: Look for Pseudoeurycea exspectata 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 Pseudoeurycea exspectata in 20 minutes

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

Frequently asked questions

What is Pseudoeurycea exspectata in simple terms?

Pseudoeurycea exspectata, also known as the Jalpa false brook salamander, is an extinct species of salamander in the family Plethodontidae. It was endemic to Guatemala.

Why does Pseudoeurycea exspectata 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 Pseudoeurycea exspectata?

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 Pseudoeurycea exspectata.