science

Planispectrum hongkongense

Planispectrum hongkongense 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 Planispectrum hongkongense rather than just read about it. In short: Planispectrum hongkongense is a Phasmatodea species native to Hong Kong, of which only females are known so far. Characteristics With length about 30 millimetres (1.2 in), the females of Planispectrum hongkongense are among the larger representatives of the genus.

Key takeaways

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

Reference excerpt

Planispectrum hongkongense is a Phasmatodea species native to Hong Kong, of which only females are known so far.

Characteristics With length about 30 millimetres (1.2 in), the females of Planispectrum hongkongense are among the larger representatives of the genus. Due to the laterally flattened abdomen, which is significantly wider than the thorax, the species is considered easy to identify. It can be distinguished from the closely related Planispectrum hainanense by the hairless legs, which have their middle and hind femurs only slightly widened fin-like lamellae on the front and rear area. The ones from P. hainanense are clearly fin-like there and with short brownish setae at the legs. The anal segment of P. honkongense is slightly emarginate, that of P. hainanensis is strongly emarginate. The 3.7 millimetres (0.15 in) long head is significantly longer than wide. The supra antennals located there are pointed and connected to the interorbitals by a raised crest. The three pre occipitals become larger towards the rear. The posterior occipitals are prominent. The lateral coronals are clearly visible. The antennae consist of about 20 segments, some of which are indistinctly separated from one another. Of the 30 millimetres (1.2 in) total length, the pronotum accounts for 2.7 millimetres (0.11 in), the mesonotum 5.8 millimetres (0.23 in), the metanotum 2.8 millimetres (0.11 in) and the median segment 1.8 millimetres (0.071 in). The first to fourth abdominal segments increasingly wide. The fourth segment is the widest. The fifth segment has the width of the third. The sixth to tenth segments increasingly narrow.

Taxonomy and distribution area Oliver Zompro described Planispectrum hongkongense in 2004 together with two other Planispectrum species using a female and an egg taken from this. The female, which like the egg is in the collection of the Natural History Museum of Geneva, was declared the holotype. It was collected on December 2, 1988 by B. Hauser at an altitude of 180 to 380 metres (590 to 1,250 ft) and is from the Tai Mo Shan Country Park. The species name refers to where the specimen was found. In addition to the holotype, another female is mentioned, which was photographed in the collection of the University of Hong Kong without location information. George Ho Wai-Chun examined further eleven females and nine eggs. These were mostly collected by himself between 2006 and 2013 in Southern District (in Aberdeen and Violet Hill) and Tai Po District (in Ma Wo, Tai Po Kau and Ng Tung Chai), Sha Tin District (in Shing Mun), Sai Kung District (in Tsiu Hang) and Islands District (at Tai Tung Shan on Lantau Island).

In captivity A parthenogenetic stock of Planispectrum hongkongense has been in breeding in Europe since 2020. it goes back to a female that the Czech Luděk Šulda in the Tai Tam Country Park of Hong Kong took away on November 20, 2019, while he was looking for ants. Arriving in the Czech Republic, he tried to identify the species. After it was initially thought to be a representative of the genus Orestes because of a bad photo, Pavel Potocký identified it in April 2020 using better pictures as a representative of another genus, after which Šulda sent the adult female Potocký. When the female died in July 2020, she had laid about 30 eggs, from which about 25 nymphs hatched, most of which were passed on to different breeders. Using adult females of the first offspring generation, Potocký determined the species 2021 and named the breeding line after the origin as Planispectrum hongkongense 'Tai Tam '. Planispectrum hongkongense is easy to keep and to breed. The nymphs grow very slowly and, like the imagos too, they feed on leaves of bramble or other Rosaceae.

References

External links Data related to Planispectrum hongkongense at Wikispecies Media related to Planispectrum hongkongense at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Planispectrum hongkongense

Start with the simplest possible case. Write down what Planispectrum hongkongense 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 Planispectrum hongkongense 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 Planispectrum hongkongense 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 Planispectrum hongkongense

In research: Planispectrum hongkongense 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 Planispectrum hongkongense 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: Planispectrum hongkongense is common in secondary-school and first-year university syllabi. It links to neighbouring topics Insects described in 2004, Phasmatodea, Phasmatodea of Indo-China, so understanding it makes those chapters shorter.
In everyday life: Look for Planispectrum hongkongense 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 Planispectrum hongkongense in 20 minutes

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

Frequently asked questions

What is Planispectrum hongkongense in simple terms?

Planispectrum hongkongense is a Phasmatodea species native to Hong Kong, of which only females are known so far. Characteristics With length about 30 millimetres (1.2 in), the females of Planispectrum hongkongense are among the larger representatives of the genus.

Why does Planispectrum hongkongense 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 Planispectrum hongkongense?

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 Planispectrum hongkongense.