science

Obrimini

Obrimini 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 Obrimini rather than just read about it. In short: The Obrimini are the most species-rich tribe of the Phasmatodea family of the Heteropterygidae native to Southeast Asia. Description The Obrimini differ from their sister tribe the Hoplocloniini by the structure of the secondary ovipositor at the abdomen of the females, which surrounds the actual ovipositor.

Key takeaways

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

Reference excerpt

The Obrimini are the most species-rich tribe of the Phasmatodea family of the Heteropterygidae native to Southeast Asia.

Description The Obrimini differ from their sister tribe the Hoplocloniini by the structure of the secondary ovipositor at the abdomen of the females, which surrounds the actual ovipositor. It is formed in the Obrimini dorsally from the eleventh abdominal tergum called supraanal plate or epiproct, while in the Hoplocloniini it originated from the tenth tergum.

Distribution area The distribution area of the Obrimini extends from Borneo to the east and includes the Philippines, Sulawesi, most of the Moluccas and New Guinea. Farthest east lies with Viti Levu, the main island of the Fiji group, the distribution area of Pterobrimus depressus.

Taxonomy

Brunner von Wattenwyl built in 1893 for the genera already described Obrimus, Hoploclonia, Tisamenus, Pylaemenes, Dares and Datames (today a synonym to Pylaemenes) the tribe Obrimini (abbreviated there as Obrimi.). He placed these together with the genus Heteropteryx and the South American tribe Cladomorphini (abbreviated there as Cladomorphi.) in the family Cladomorphidae (now synonymous with Cladomorphinae). In the following years, basesd on this work, mostly genera of today's Obriminae and Dataminae were listed in this tribe, for example by Josef Redtenbacher in 1906. Lawrence Bruner raised the Obrimini to the rank of a family in 1915. James Abram Garfield Rehn and his son John William Holman Rehn divided the Obriminae, which they only referred to as a subfamily, into the tribes Obrimini and Datamini in 1939. Both tribes were transferred in 1953 by Klaus Günther to the subfamily Heteropteryginae. In 2004 Oliver Zompro raised this subfamily to the rank of family and the tribes contained in the rank of subfamilies or in the rank of a separate family (Anisacanthidae). At the same time he built three tribes in the subfamily Obriminae. In addition to the Obrimini, these were the Miroceramiini and the Eubulidini. The latter was in 2016 by Frank H. Hennemann et al synonymized with the Obrimini. At the same time, the new tribe Tisamenini was established within the Obriminae. In a study based on genetic analysis, published in 2021, Sarah Bank et al. synonymized the tribe Miroceramiini and the tribe Tisamenini with the Obrimini and placed next to this the Hoplocloniini as the only other tribe in the subfamily Obriminae. In addition, a species previously referred to as Trachyaretaon sp. 'Negros' was identified as a representative of an as yet undescribed genus. Hennemann described this in 2023 alongside many other species of the tribe as Trachyaretaon negrosanon.

Genera with species Sources:

References

External links Data related to Obrimini at Wikispecies

Illustrations

Worked examples

Example 1 — a first encounter with Obrimini

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

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

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

Frequently asked questions

What is Obrimini in simple terms?

The Obrimini are the most species-rich tribe of the Phasmatodea family of the Heteropterygidae native to Southeast Asia. Description The Obrimini differ from their sister tribe the Hoplocloniini by the structure of the secondary ovipositor at the abdomen of the females, which surrounds the actual o…

Why does Obrimini 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 Obrimini?

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 Obrimini.