science

Marleyimyia xylocopae

Marleyimyia xylocopae 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 Marleyimyia xylocopae rather than just read about it. In short: Marleyimyia xylocopae is a species of bee fly from South Africa that has a similarity to the patterning of a carpenter bee Xylocopa flavicollis (De Geer, 1778) found in the region. The species is considered to be distinctive and only one of three within the genus Marleyimyia.

Key takeaways

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

Reference excerpt

Marleyimyia xylocopae is a species of bee fly from South Africa that has a similarity to the patterning of a carpenter bee Xylocopa flavicollis (De Geer, 1778) found in the region. The species is considered to be distinctive and only one of three within the genus Marleyimyia. The other members of the genus are Marleyimyia goliath described from Peninsular Malaysia and M. natalensis from southern Africa. Members in the genus have been presumed to be crepuscular or nocturnal but this species was found to be diurnal.

Controversy about photography-based taxonomy The species was unusual in being described on the basis of two photographs, without the collection, designation of a holotype specimen and deposition in a suitable repository. This method provoked in 2016 a controversy among taxonomists, with a paper arguing for photography-based taxonomy by Pape (with 34 signatories), quickly followed by papers arguing against it by Krell (with 5 signatories) and Ceríaco et al. (with 496 authors). In 2017, the ICZN published a declaration, adding recommendations to the ICZN Code. This clarified that it is in fact acceptable to describe a new species without a physical type specimen (for example, describing a species from photos), but "only under strict conditions". This declaration was proposed by a committee on "typeless species" formed in 2016, composed of commissioners Krell (chair), Ballerio and Bouchard.

See also Eulophophyllum kirki Ingrisch & Riede, 2016 — a katydid described only from photographs.

References

Illustrations

Worked examples

Example 1 — a first encounter with Marleyimyia xylocopae

Start with the simplest possible case. Write down what Marleyimyia xylocopae 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 Marleyimyia xylocopae 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 Marleyimyia xylocopae 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 Marleyimyia xylocopae

In research: Marleyimyia xylocopae 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 Marleyimyia xylocopae 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: Marleyimyia xylocopae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bombyliidae, Bombyliidae stubs, Controversial taxa, so understanding it makes those chapters shorter.
In everyday life: Look for Marleyimyia xylocopae 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 Marleyimyia xylocopae in 20 minutes

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

Frequently asked questions

What is Marleyimyia xylocopae in simple terms?

Why does Marleyimyia xylocopae 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 Marleyimyia xylocopae?

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 Marleyimyia xylocopae.