science

Idelinellidae

Idelinellidae 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 Idelinellidae rather than just read about it. In short: Idelinellidae is an extinct family of insects from the Permian and possibly the Late Carboniferous. They closely resemble members of the family Stenoneuridae.

Key takeaways

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

Reference excerpt

Idelinellidae is an extinct family of insects from the Permian and possibly the Late Carboniferous. They closely resemble members of the family Stenoneuridae.

Classification history Idelinellidae was originally established by Storozhenko (1997) to house the genus Idelinella (described from a fossil preserving only a fragment of a forewing), which had previously been included in the family Ideliidae. Idelinellidae itself was classified in the suborder Grylloblattina of the order Grylloblattida (including extant Grylloblattidae as well as many extinct families). In 2004, Aristov transferred the genus Permostriga from Kortshakoliidae to Idelinellidae and described Sylvastriga from the Tshekarda locality in the Koshelevka Formation. In 2012, Aristov and Rasnitsyn transferred the family to the order Eoblattida, and revised the family to include five more genera. Aristov later transferred the genus Permeoblatta to the family Protophasmatidae in 2015. Cui et al. (2024) consider most members of the family as representatives of the total group of Xenonomia (except Rasstriga), though the authors avoided using family names in their data set.

Included genera and species The family consists of the following genera and species:

Idelinella Storozhenko, 1992 – Soyana, Iva-Gora Beds Formation, Russia, Middle Permian (Roadian) Idelinella macroptera Storozhenko, 1992 (known from a forewing fragment) Permostriga Novokshonov, 1999 – Tshekarda/Chekarda, Koshelevka Formation, Russia, Early Permian (Kungurian); Soyana, Iva-Gora Beds Formation, Russia, Middle Permian (Roadian) Permostriga augustalis Novokshonov, 1999 (known from forewings and a complete body) Sylvastriga Aristov, 2004 – Tshekarda/Chekarda, Koshelevka Formation, Russia, Early Permian (Kungurian) Sylvastriga miranda Aristov, 2004 (known from forewing fragment) Strigulla Aristov & Rasnitsyn, 2012 – Tshekarda/Chekarda, Koshelevka Formation, Russia, Early Permian (Kungurian) Strigulla cuculiophora (Aristov, 2002) (= Euryptilon cuculiophoris Aristov, 2002) (known from complete body) Cucullistriga Aristov & Rasnitsyn, 2012 – Tshekarda/Chekarda, Koshelevka Formation, Russia, Early Permian (Kungurian) Cucullistriga cucullata Aristov & Rasnitsyn, 2012 (known from complete body) Scutistriga Aristov & Rasnitsyn, 2012 – Tshekarda/Chekarda, Koshelevka Formation, Russia, Early Permian (Kungurian) Scutistriga scutata Aristov & Rasnitsyn, 2012 (known from complete body) ?Rasstriga Aristov & Rasnitsyn, 2012 – Mazon Creek, Carbondale Formation, United States, Late Carboniferous (Desmoinesian); tentatively included in the family ?Rasstriga americana Aristov & Rasnitsyn, 2012 (known from incomplete body) Permeoblatta Rasnitsyn & Aristov, 2010 (including the species Permeoblatta borealis Rasnitsyn & Aristov, 2010) from the Late Permian (Wuchiapingian)-aged Poldarsa Formation of Russia was formerly included in the family until 2015, when it was transferred to the family Protophasmatidae.

References

Worked examples

Example 1 — a first encounter with Idelinellidae

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

In research: Idelinellidae 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 Idelinellidae 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: Idelinellidae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cisuralian first appearances, Lopingian extinctions, Notoptera, so understanding it makes those chapters shorter.
In everyday life: Look for Idelinellidae 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 Idelinellidae in 20 minutes

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

Frequently asked questions

What is Idelinellidae in simple terms?

Idelinellidae is an extinct family of insects from the Permian and possibly the Late Carboniferous. They closely resemble members of the family Stenoneuridae.

Why does Idelinellidae 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 Idelinellidae?

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 Idelinellidae.