science

Styporaphidia

Styporaphidia 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 Styporaphidia rather than just read about it. In short: Styporaphidia is a genus of snakefly, belonging to the extinct family Mesoraphidiidae, containing up to three species, the type species Styporaphidia magia, Styporaphidia willmanni and tentatively Styporaphidia? hispanica. The genus was named from the Greek stypos meaning "stem" or "stump" and Raphidia, the type genus for, and most often used as, a stem for generic names in the order Raphidioptera.

Key takeaways

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

Reference excerpt

Styporaphidia is a genus of snakefly, belonging to the extinct family Mesoraphidiidae, containing up to three species, the type species Styporaphidia magia, Styporaphidia willmanni and tentatively Styporaphidia? hispanica. The genus was named from the Greek stypos meaning "stem" or "stump" and Raphidia, the type genus for, and most often used as, a stem for generic names in the order Raphidioptera. The species name of S. magia is from the Greek word mageia meaning "magic" while the species name for S.? hispanica is from the Latin Hispania meaning "Spain" in reference to the type locality of the species.

S. magia S. magia is known from only the holotype, a single specimen of undetermined sex, deposited in the Department of Biology, Capital Normal University, Beijing, China as specimen number NNS-200202. Preserved as a compression fossil, the individual is fossilized in a resting position giving a top view to the body and wings. Paleontologiests Michael S. Engel and Dong Ren first studied and described S. magia and the co-occurring Ororaphidia and in 2008, publishing the type description in the Journal of the Kansas Entomological Society volume 81. The S. magia holotype was found in the near Daohugou Village, Inner Mongolia, China in strata belonging to the Jiulongshan Formation. This formation is dated to the early middle Jurassic and specifically Aalenian to Bajocian in age. The dating places S. magia and Ororaphidia as the oldest raphidiopterans known from China to date. With no ovipositor present and the terminal section of the abdomen absent it is not possible to identify the sex of the holotype specimen. The overall length of S. magia is 13 millimetres (0.51 in) and has a forewing length of 10 millimetres (0.39 in). The head is longer than it is wide and is longer than the prothorax. Styporaphidia possesses the primitive feature of two crossveins in the pterostigma. This feature is found in some mesozoic genera of the Baissopteridae. However it can be distinguished from the baissopterids the lack of numerous crossveins in the radial and medial fields of the wings.

S.? hispanica S.? hispanica is also known only from a holotype, specimen number MCNA 9343. The specimen is composed of a partial isolated hindwing and a partial abdomen preserved in a small fragment of amber. The fossil was recovered from outcrops of the Escucha Formation in Moraza, part of the Province of Burgos in Northern Spain. S.? hispanica was first studied by group of paleoentomologists led by Ricardo Pérez-de la Fuente of the University of Barcelona and including Enrique Peñalver, Xavier Delclòs, and Michael S. Engel. Their 2012 type description of the species was published in the electronic journal ZooKeys. While little of the single specimen is preserved, the tip of the abdomen shows the insect was a male. Due to the proximity of the hindwing and abdomen the two are assumed to belong to the same individual. The section of hindwing present is 3.5 millimetres (0.14 in) long and 2.5 millimetres (0.098 in) wide. Pérez-de la Fuente and coauthors tentatively placed the species into Styporaphidia based on the presence of two crossveins in the pterostigma. Two crossveins is a feature that is found in few described snakeflies and the preserved vein structure indicates placement within Mesoraphidiidae. Since the base of the pterostigma is not preserved it is not possible to firmly place the species into Styporaphidia. The two species are distinguished the finer details of the wing veins.

S. willmanni The holotype female for S. willmanni, CNU-RAP-LB-2017107 is preserved in the Capital Normal University College of Life Sciences collections in Beijing. The partially complete specimen is missing the distal half of the abdomen and most of the fore and hind wings on the left side.

References

Illustrations

Worked examples

Example 1 — a first encounter with Styporaphidia

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

In research: Styporaphidia 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 Styporaphidia 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: Styporaphidia is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aalenian first appearances, Albian genus extinctions, Late Jurassic insects, so understanding it makes those chapters shorter.
In everyday life: Look for Styporaphidia 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 Styporaphidia in 20 minutes

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

Frequently asked questions

What is Styporaphidia in simple terms?

Why does Styporaphidia 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 Styporaphidia?

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 Styporaphidia.