biology

List of critically endangered arthropods

List of critically endangered arthropods 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 List of critically endangered arthropods rather than just read about it. In short: As of July 2016, the International Union for Conservation of Nature (IUCN) listed 394 critically endangered arthropod species, including 86 which are tagged as possibly extinct. 4.1% of all evaluated arthropod species are listed as critically endangered. The IUCN also lists three arthropod subspecies as critically endangered.

Key takeaways

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

Reference excerpt

As of July 2016, the International Union for Conservation of Nature (IUCN) listed 394 critically endangered arthropod species, including 86 which are tagged as possibly extinct. 4.1% of all evaluated arthropod species are listed as critically endangered. The IUCN also lists three arthropod subspecies as critically endangered. No subpopulations of arthropods have been evaluated by the IUCN. Additionally 2875 arthropod species (30% of those evaluated) are listed as data deficient, meaning there is insufficient information for a full assessment of conservation status. As these species typically have small distributions and/or populations, they are intrinsically likely to be threatened, according to the IUCN. While the category of data deficient indicates that no assessment of extinction risk has been made for the taxa, the IUCN notes that it may be appropriate to give them "the same degree of attention as threatened taxa, at least until their status can be assessed". This is a complete list of critically endangered arthropod species and subspecies as evaluated by the IUCN. Species considered possibly extinct by the IUCN are marked as such.

Centipedes

Seed shrimps Kapcypridopsis barnardi Namibcypris costata Spelaeoecia bermudensis

Arachnids There are 47 arachnid species assessed as critically endangered.

Harvestmen

Spiders

Other arachnid species

Branchiopoda

Millipedes

Entognatha Ceratophysella sp. nov. 'HC' (possibly extinct) Delamarephorura tami (possibly extinct)

Maxillopoda Includes barnacles, copepods and a number of related animals.

Malacostracans Malacostraca includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others. There are 125 malacostracan species and one malacostracan subspecies assessed as critically endangered.

Mysida Bermudamysis speluncola Sterrer's cave mysid (Platyops sterreri)

Mictaceans Mictocaris halope

Isopods

Amphipods

Decapods There are 106 decapod species and one decapod subspecies assessed as critically endangered.

Parastacids

Gecarcinucids

Atyids

Cambarids Species

Subspecies

Procambarus rogersi expletus

Palaemonids

Other decapod species

Insects

There are 195 insect species and two insect subspecies assessed as critically endangered.

Blattodea

Orthoptera There are 72 species in the order Orthoptera assessed as critically endangered.

Euschmidtiids

Crickets

Acridids

Tettigoniids

Other Orthoptera species

Hymenoptera

Lepidoptera Moths and butterflies

Beetles

Odonata Includes dragonflies and damselflies. Species

Subspecies

Chlorogomphus brunneus keramensis Delphi cordulegaster (Cordulegaster helladica kastalia)

Other insect species

See also Lists of IUCN Red List critically endangered species List of least concern arthropods List of near threatened arthropods List of vulnerable arthropods List of endangered arthropods List of recently extinct arthropods List of data deficient arthropods

References

Illustrations

Worked examples

Example 1 — a first encounter with List of critically endangered arthropods

Start with the simplest possible case. Write down what List of critically endangered arthropods 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 List of critically endangered arthropods 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 List of critically endangered arthropods 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 List of critically endangered arthropods

In research: List of critically endangered arthropods 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 List of critically endangered arthropods 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: List of critically endangered arthropods is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arthropod conservation, Critically endangered animals, IUCN Red List critically endangered species, so understanding it makes those chapters shorter.
In everyday life: Look for List of critically endangered arthropods 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 List of critically endangered arthropods in 20 minutes

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

Frequently asked questions

What is List of critically endangered arthropods in simple terms?

Why does List of critically endangered arthropods 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 List of critically endangered arthropods?

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 List of critically endangered arthropods.