Researchers have identified a 99-million-year-old insect species preserved in Myanmar amber, named Cretodorus noonoo, featuring flexible mouthparts measuring nearly twice its body length. Scientists from Tel Aviv University and the Chinese Academy of Sciences studied the fossils to understand ancient Cretaceous forest ecosystems.
A tiny insect trapped in resin roughly 99 million years ago during the Cretaceous period has provided researchers with a remarkable look at ancient survival strategies. Preserved inside Kachin amber from Myanmar, the specimen belongs to an extinct family of planthoppers known as Neazoniidae. Scientists named the newly described species Cretodorus noonoo, drawing inspiration for its moniker from the friendly vacuum cleaner in the children’s television series Teletubbies due to its unusually long, flexible feeding organ.
The discovery emerged after researchers examined 13 insect fossils belonging to the Neazoniidae family. Using high-resolution micro-computed tomography, the team reconstructed the internal and external structures of the insects’ feeding organs in three dimensions. The scans revealed that the mouthparts, which stretched to nearly twice the length of the insect’s body, were densely covered with transverse folds.
Anatomy of the Cretodorus noonoo Feeding Apparatus
Unlike modern planthoppers that possess simple, needle-like mouthparts to pierce plant tissues and draw fluids, Cretodorus noonoo relied on a structure with transverse folds. The fine folds along the surface of the mouthparts functioned as part of the organ itself, providing flexibility while preventing kinking or collapsing. Researchers likened the biological design to a bendy drinking straw or a vacuum hose.
Several of the amber fossils preserved these elongated mouthparts in bent positions, offering direct evidence that the tubes remained flexible during the insects’ lifetimes.
The discovery of ‘Noo-Noo,’ a new species that lived approximately 99 million years ago, gives us an extraordinary glimpse into the insect world of the age of the dinosaurs. This is not merely an insect previously unknown to science, but an animal that developed an evolutionary solution with almost no modern equivalent: a long, flexible and durable feeding organ that likely enabled it to reach food deep within tree bark.
Dr. Leonidas-Romanos Davranoglou, School of Zoology
Ecological Insights Into Cretaceous Forests
The structural adaptations of Cretodorus noonoo point to a highly specialized feeding ecology. Researchers believe the insects pointed their mouthparts backward to probe narrow cracks and crevices in tree bark, guiding the piercing organs toward deep vascular tissues carrying nutrient-rich sap.
The appearance of similar corrugated feeding structures across several insect groups during the Cretaceous period suggests a broader environmental pattern. According to the study authors, such forests created ecological opportunities for specialized feeding strategies that have since disappeared from modern planthopper lineages.
Researchers Update Classifications for Extinct Planthopper Groups
The investigation also led to wider updates in how extinct planthopper groups are classified. Based on shared body and mouthpart characteristics, researchers proposed treating Mimarachnidae as a synonym of Neazoniidae, effectively linking fossil nymphs and adults within a single family. The previously unplaced genus Spinonympha was moved into Neazoniidae, and Cretodorus noonoo was established as a new species within the genus Cretodorus.
The international research effort behind the findings was carried out by Dolev Fabrikant and Leonidas-Romanos Davranoglou of Tel Aviv University alongside Yanzhe Fu of the Chinese Academy of Sciences. Their detailed functional analysis was published in the journal Insects.
Frequently Asked Questions About Cretodorus Noonoo
Readers frequently ask specific questions regarding the discovery of the Cretaceous planthopper and its preservation in amber.
- What distinguishes Cretodorus noonoo from living insects? The ancient species possessed a flexible, folded mouthpart measuring nearly twice its body length, a specialized organ with no direct equivalent among modern planthoppers.
- Where were the amber specimens discovered? The 13 fossils examined in the research were retrieved from Kachin amber deposits located in Myanmar and date back approximately 99 million years.
- How did the insect utilize its specialized mouthparts? Researchers conclude that the long, bendable proboscis allowed the insect to probe deep cracks in tree bark to reach vascular tissues and feed on tree sap.