science

Phyllium siccifolium

Phyllium siccifolium 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 Phyllium siccifolium rather than just read about it. In short: Phyllium siccifolium (from Greek φύλλον = leaf and Latin siccus = dry, folium = leaf – 'dry leaf') is the species of the leaf insects (Phyllioidea) known to science for the longest time. It was described by Carl von Linné as early as 1758 and is thus, along with Phasma gigas and Pseudophasma phthisicus, one of the three first described Stick Insect species.

Key takeaways

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

Reference excerpt

Phyllium siccifolium (from Greek φύλλον = leaf and Latin siccus = dry, folium = leaf – 'dry leaf') is the species of the leaf insects (Phyllioidea) known to science for the longest time. It was described by Carl von Linné as early as 1758 and is thus, along with Phasma gigas and Pseudophasma phthisicus, one of the three first described Stick Insect species. The species is called Linnaeus' Leaf Insect in honor of its species describer.

Taxonomy Phyllium siccifolium was described by Linnaeus in 1758 as Gryllus (Mantis) siccifolius. The female holotype is deposited at the Zoological Institute of the University of Uppsala and labeled with the locality India. Johann Christian Fabricius reorganized the genera and subgenera established by Linnaeus in 1775 and used the genus Gryllus for representatives of the later Orthoptera, whereby the name now became Mantis siccifolia. Pierre André Latreille transferred the species to the genus Phyllium in 1802 as Phyllium siccifolia. The genus Mantis was left to the later Mantodea. The genus Phyllium, established by Johann Karl Wilhelm Illiger in 1798 and published by Latreille in 1802, was specifically created for Phyllium siccifolia, the spelling used, which thus became the type species through monotypy. The species was described several times in the 18th and 19th centuries under the various names. These are now considered synonyms of Phyllium siccifolium. Due to regrouping of the species or its synonyms into other genera as well as misspellings, Phyllium siccifolium is currently (August 2025) assigned a total of 17 synonyms. Since the genus was divided into subgenera, the species has been assigned to the former subgenus Phyllium, which differs from the former subgenus Pulchriphyllium by the absence of lobes on the outer side of the foretibia. Frank H. Hennemann et al. proposed in 2009 that the genus Phyllium be divided into species groups below the now former subgenera. Phyllium siccifolium is proposed as the eponymous species for the siccifolium species group. In 2009, Hennemann et al. also synonymized Phyllium tobeloense with Phyllium siccfolium. Detlef Größer, who described this species in 2007 based, among other things, on an egg taken from the ovipositor, points out that Hennemann et al. used this same method in their work to differentiate and describe Phyllium mindorense. Phyllium tobeloense has now been recognized again as a valid species, to which the subspecies Phyllium tobeloense bhaskarai has belonged since 2019, in whose description Hennemann was involved. Based on comparative studies of the internal sclerites of females, as well as eggs and hatchlings, Größer shows that Phyllium bilobatum, Phyllium hausleithneri and Phyllium philippinicum have very similar yet highly variable characteristics, suggesting that they could also be synonyms or subspecies of Phyllium siccifolium. Sarah Bank et al., in their molecular genetic analyses, also examined samples of Phyllium siccifolium, Phyllium hausleithneri and Phyllium philippinicum, all of which turned out to be distinct species.

Distribution Although the species' actual distribution area is not yet definitively known, its occurrence in the Moluccas is considered certain. This can be explained by the fact that the holotype collected most likely originated from Ambon Island or a neighboring Moluccan island. Besides Ambon, Phyllium siccifolium also occurs on the islands of Halmahera, Seram (formerly Ceram), Buru, Banggai, and Sula. However, it is controversial whether the animals from China, Malaysia, India and the Philippines are actually Phyllium siccifolium or should be counted among other closely related species of the siccifolium species group.

In terraristics After many years of assuming that the strain from West Malaysia, listed by the Phasmid Study Group under PSG number 76, was Phyllium siccifolium, Hennemann et al. now assume that these specimens belong to Phyllium hausleithneri, which is why the Phasmid Study Group now also calls the species that. The species listed under PSG number 278, initially referred to as Phyllium spec. (Philippines), was also suspected of being Phyllium siccifolium. Since it was described as Phyllium philippinicum in 2009, Phyllium siccifolium has not been cultivated or cultivated to date.

References

External links Data related to Phyllium siccifolium at Wikispecies Media related to Phyllium siccifolium at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Phyllium siccifolium

Start with the simplest possible case. Write down what Phyllium siccifolium 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 Phyllium siccifolium 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 Phyllium siccifolium 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 Phyllium siccifolium

In research: Phyllium siccifolium 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 Phyllium siccifolium 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: Phyllium siccifolium is common in secondary-school and first-year university syllabi. It links to neighbouring topics Insects described in 1758, Phasmatodea, so understanding it makes those chapters shorter.
In everyday life: Look for Phyllium siccifolium 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 Phyllium siccifolium in 20 minutes

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

Frequently asked questions

What is Phyllium siccifolium in simple terms?

Why does Phyllium siccifolium 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 Phyllium siccifolium?

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 Phyllium siccifolium.