biology

Harpegnathos alperti

Harpegnathos alperti 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 Harpegnathos alperti rather than just read about it. In short: Harpegnathos alperti is a ponerine species of ants found in the Indomalayan bioregion. The species is known from a single specimen collected in the Philippines and described in 2016.

Key takeaways

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

Reference excerpt

Harpegnathos alperti is a ponerine species of ants found in the Indomalayan bioregion. The species is known from a single specimen collected in the Philippines and described in 2016.

History and classification

The type specimen was collected in 2003 from Panicuason Village located on Mt. Isarog about 18 km (18,000 m) east of Naga city, Luzon Island in the Philippines. The worker was officially described by myrmecologist David Emmanuel M. General of the University of the Philippines in a 2016 Halteres paper. The holotype was deposited into the National Museum of the Philippines collections as specimen #PNM13015, and to the Antweb.org database as #ANTWEB1008901. General coined the specific epithet as a patronym honoring entomologist Gary Alpert who acted as a mentor and friend. In general aspect, General considered the species is similar to Harpegnathos venator chapmani in coloration, but with exoskeletal texturing more similar to Harpegnathos venator rugosus. However, due to being unable to locate the type specimen for H. v. chapmani in the American Museum of Natural History, Natural History Museum, London, Museum of Comparative Zoology or Smithsonian Institution collections, a direct and more detailed comparison of the two taxa was unable to be performed. The H. v. chapmani type worker was collected from Mount Makiling, with General noting the need for more extensive collecting to gather specimens of Luzon Harpegnathos and shed light on the natural biology of the genus on the island.

Description Overall the Harpegnathos alperti is 19.45 mm (0.766 in) long, with an overall black coloration to the body grading to patchy yellowish chocolate-brown on the leg while the mandibles and antennae are a darker chocolate. The head capsule is 2.55 mm (0.100 in) wide by 2.81 mm (0.111 in) long with a straight rear edge and large compound eyes placed slightly rearward of midpoint on each side. The head has a rugose texturing to the surface forming a reticulo-punctate pattering. The antennal bases are covered by the frontal lobes of the head capsule. Each antennae has sort erect to suberect hairs sparsely scattered along the scape which extends beyond the posterior margin. the mandibles are longer than the head capsule, being 3.54 mm (0.139 in) in length each. In profile the H. alperti thorax has an elongated cylindrical outline with a space between the front coxae and the middle plus hind coxae. The petiole is longer than high and has coarse punctation on both the sides and upper surface. The elongated gasters first and second tergites have fine background punctation overlain by larger and coarser punctations and the tip of the gaster sports a functional sting.

Ecology The holotype was trapped during the process of general insect collection on a Pterocarpus indicus ("narra") plantation with an understory consisting of Musa textilis Abacá banana. The plantation was at an elevation of 500–550 m (1,640–1,800 ft) in elevation.

References

External links Media related to Harpegnathos at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Harpegnathos alperti

Start with the simplest possible case. Write down what Harpegnathos alperti 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 Harpegnathos alperti 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 Harpegnathos alperti 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 Harpegnathos alperti

In research: Harpegnathos alperti 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 Harpegnathos alperti 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: Harpegnathos alperti is common in secondary-school and first-year university syllabi. It links to neighbouring topics Hymenoptera of Asia, Insects described in 2016, Insects of the Philippines, so understanding it makes those chapters shorter.
In everyday life: Look for Harpegnathos alperti 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 Harpegnathos alperti in 20 minutes

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

Frequently asked questions

What is Harpegnathos alperti in simple terms?

Harpegnathos alperti is a ponerine species of ants found in the Indomalayan bioregion. The species is known from a single specimen collected in the Philippines and described in 2016.

Why does Harpegnathos alperti 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 Harpegnathos alperti?

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 Harpegnathos alperti.