biology

Stenobrimus

Stenobrimus 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 Stenobrimus rather than just read about it. In short: Stenobrimus is a genus of medium-sized stick insects native to the Philippines. Characteristics The representatives of this genus are much slimmer and longer-legged than all other representatives of the Obriminae and correspond more to the typical habitus of stick insects.

Key takeaways

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

Reference excerpt

Stenobrimus is a genus of medium-sized stick insects native to the Philippines.

Characteristics The representatives of this genus are much slimmer and longer-legged than all other representatives of the Obriminae and correspond more to the typical habitus of stick insects. Depending on the species, spines are distributed at more or less regular intervals over the entire body and femurs. On the thorax and abdomen they are arranged in pairs or rings of four. The 4.5 to 5.8 centimetres (1.8 to 2.3 in) long males are relatively simply colored. The females are 5.5 to 6.0 centimetres (2.2 to 2.4 in) in size. They are downright colorful compared to males, depending on the species, and may have triangle or diamond patterns of green, light and dark brown colors on the thorax and anterior abdomen. The legs can also be banded with green and brown.

Distribution area The species of this genus are native to various Philippine islands. Stenobrimus bolivari occurs in Luzon, for example, in the provinces of Quezon and Laguna. Stenobrimus tagalog comes from Polillo, a few kilometers off the southeast coast of Luzon. Stenobrimus lumad is native to Mindanao.

Taxonomy The genus Stenobrimus was established by Joseph Redtenbacher in 1906 as a monotypic genus for the simultaneously described Stenobrimus bolivari within the Obrimini. Redtenbacher described the species using a female that the Spanish naturalist and entomologist Ignacio Bolívar had collected in Luzon in the area around Tayabas. The species name was chosen in his honor. James Abram Garfield Rehn and his son John W. H. Rehn described Stenobrimus tagalog in 1939 as the second species of the genus based on a male. The species name is dedicated to the Filipino ethnic group of the Tagalog. Oliver Zompro elevated the Obrimini to a subfamily in 2004 and divided them into three tribes. He assigned Stenobrimus to the Eubulidini together with Eubulides, Tisamenus, Ilocano (today synonymous with Tisamenus), Hoploclonia, Heterocopus, Pterobrimus and Theramenes. A publication by Frank H. Hennemann et al. in 2016 moved back this tribe in and is now considered a synonym for the Obrimini, into which the genus Stenobrimus was transferred back. Within the obrimini three generic groups were established. The one put forward for Stenobrimus is the only monotypic one because of the unique characters of the genus. Even if the genus groups do not exist according to a work based on genetic analyzes and published in 2021, the special position of Stenobrimus could be confirmed in principle. In 2010, Stenobrimus lumad, whose species name is dedicated to the Lumad indigenous people of Mindanao, was described. In 2023 Stenobrimus pilipinus was described from Cavinti. The species described so far are:

Stenobrimus bolivari Redtenbacher, 1906 Stenobrimus lumad Lit & Eusebio, 2010 Stenobrimus pilipinus Eusebio, Lit & Lucañas, 2023 Stenobrimus tagalog Rehn & Rehn, 1939

Terraristic In March 2008, Joachim Bresseel, Mark Bushell and Ellen Caluwe found specimens of Stenobrimus bolivari in Quezon National Park. Thierry Heitzmann also found some specimens of this species in south-east Luzon in 2008. Heitzmann bred the species in the Philippines. In Europe, Tim Bollens and Rob Krijns initially bred them succeeded in the Netherlands. Various species of ferns were eaten. Breeding has not been successful in the long term and no species of the genus has been in breeding since about 2012.

References

External links Media related to Stenobrimus at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Stenobrimus

Start with the simplest possible case. Write down what Stenobrimus 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 Stenobrimus 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 Stenobrimus 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 Stenobrimus

In research: Stenobrimus 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 Stenobrimus 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: Stenobrimus is common in secondary-school and first-year university syllabi. It links to neighbouring topics Phasmatodea, Phasmatodea genera, Phasmatodea of Asia, so understanding it makes those chapters shorter.
In everyday life: Look for Stenobrimus 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 Stenobrimus in 20 minutes

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

Frequently asked questions

What is Stenobrimus in simple terms?

Stenobrimus is a genus of medium-sized stick insects native to the Philippines. Characteristics The representatives of this genus are much slimmer and longer-legged than all other representatives of the Obriminae and correspond more to the typical habitus of stick insects.

Why does Stenobrimus 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 Stenobrimus?

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 Stenobrimus.