Two New Australian Stick Insect Species Described After Anchiale Genus Revision
University of Sydney researchers described two new Australian stick insect species, Anchiale mabiensis and Anchiale robusta. The revision also reinstated a third species and raised the Australian Anchiale count from two to five. This explainer covers what was found, the dates, the methods and the exam-relevant science terms.
On this page
Researchers at the University of Sydney have described two new Australian stick insect species, Anchiale mabiensis and Anchiale robusta. Their revision of the genus Anchiale also reinstated a third species. As a result, what was treated as two Australian species is now recognised as five. The study has already been published and the university has announced it, so this is a completed event. It matters for exams as a current example of taxonomy, biodiversity documentation and citizen science.
What happened and when
Event and publication dates
- Study: the revision appeared in the journal Austral Entomology in 2026 (DOI 10.1111/aen.70096). GKToday gives the publication date as 21 September 2026. The University of Sydney page does not state the journal's exact date.
- University announcement: 22 September 2026.
- GKToday summary: 2 October 2026. This is the date of the secondary source, not of the discovery.
The headline result
The group was re-examined as a whole. Two new species were named, one earlier-overlooked species was reinstated, and the Australian range of the group is now described as running from northern New South Wales through coastal Queensland into the tropical north.
The two new species
| Species | Key points from the evidence |
|---|---|
| Anchiale mabiensis | Found in the critically endangered Mabi rainforest on the Atherton Tablelands, Queensland. Its eggs have a structural lid unlike anything previously recorded in stick insects or their closest relatives. GKToday also mentions inner rings in the egg structure. |
| Anchiale robusta | A large stick insect long known to scientists and enthusiasts but misidentified for decades. Combined evidence showed it to be a separate, new species. |
How the species were separated
The team combined several lines of evidence rather than relying on appearance alone:
- DNA analysis
- museum collections
- field surveys
- citizen science records
- studies of captive populations
The university release says more than 1,000 citizen science observations of stick insects exist on iNaturalist and the Atlas of Living Australia. It does not say that all of them were used in this particular analysis. GKToday's wording suggests they were, so treat that detail with caution.
Why it matters
Biodiversity is still being discovered
The lead author, Dr Braxton Jones, said that even among some of Australia's most photographed and frequently reported insects, species can escape scientific recognition. The researchers argue that protecting threatened ecosystems and documenting biodiversity matter before species are lost undiscovered.
Possible practical value
One stick insect known for plague-like outbreaks that strip tree foliage was found to consist of more than one species. According to the university, sorting out these relationships should help future management of impacts on forestry and agriculture. This is a stated expectation, not a demonstrated outcome.
Exam-relevant context
This item is useful background for general science and environment preparation. The following points are supported by the sources. No claim is made that any question will appear in an exam.
- Stick insects belong to the order Phasmatodea. The name comes from an ancient Greek word meaning "phantom" or "ghost", a reference to their camouflage.
- Anchiale is a genus. The study's title places it in the family Phasmatidae.
- Taxonomy classifies and names species using features such as egg structure together with DNA and museum specimens.
- Citizen science observations can support biodiversity surveys and species documentation.
- According to the university, Australia has about 130 stick insect species and the world has 3,609.
- Parthenogenesis, where females produce female-only offspring without mating, occurs in many stick insects.
Limits of the evidence
- The reinstated third species is not named in the sources provided.
- The researchers also identified a likely additional undescribed species from Cape York. They say more specimens are needed before its identity can be confirmed, so it is not a formally described species.
- The journal's exact publication date comes only from GKToday, while the university's release is dated 22 September 2026.
- The sources do not link this study to India, so any Indian relevance is only as a general science and biodiversity example.
FAQ
Which new species were described?
Anchiale mabiensis and Anchiale robusta.
How many Australian Anchiale species are now recognised?
Five, up from two, because of two new descriptions and one reinstated species.
Where was Anchiale mabiensis found?
In the Mabi rainforest on the Atherton Tablelands in Queensland. The university describes this as a critically endangered rainforest.
Who funded the research?
The university states funding from the Australian Biological Resources Study (National Taxonomy Research Grant) and a CSIRO postgraduate scholarship. It declares no conflicts of interest.
Sources & Further Reading
| Document / Website | Link |
|---|---|
| Scientists Identify Two New Australian Stick Insect Species – GKToday | Open Scientists Identify Two New Australian Stick Insect Species – GKToday ↗www.gktoday.in |
| New stick insect species revealed in Australia's backyards and rainforests - The University of Sydney | Open New stick insect species revealed in Australia's backyards and rainforests - The University of Sydney ↗www.sydney.edu.au |
| Home - Insects.at | Open Home - Insects.at ↗insects.at |