For decades, two giant stick insect species in Australia were hiding in plain sight, misidentified by researchers who had grouped them together under the wrong labels. Scientists from the University of Sydney recently revisited the Anchiale genus, utilizing a mix of DNA analysis, museum archives, and citizen science data to uncover the truth. What was once thought to be just two species is now recognized as five distinct varieties, with evidence suggesting that a sixth could still be waiting for formal confirmation in Cape York.

One of these newly classified insects, Anchiale robusta, was well-known to enthusiasts but had been incorrectly categorized for years despite growing up to 16cm in length. Meanwhile, the second new species, Anchiale mabiensis, offered a unique biological clue through its eggs, which feature a distinct structural lid unlike any other known stick insect. Dr. Braxton Jones, the lead author of the study, noted that these discoveries highlight how much of Australia’s biodiversity remains overlooked. Beyond the excitement of taxonomy, these findings are critical for conservation; by accurately identifying these insects, scientists can better manage threatened habitats like the Mabi rainforest and develop more effective strategies for addressing agricultural outbreaks caused by specific species.