Ancient Bug with Unique Crab-Like Claws Discovered in 100-Million-Year-Old Amber
100-million-year-old bug had crab-like claws unlike any known insect

Image: Science Daily
Researchers from Ludwig Maximilian University of Munich have discovered a 100-million-year-old bug in amber from Myanmar, featuring claw-like front legs resembling crab pincers. This unique anatomy represents the fourth independent evolution of such structures in insects, leading to the classification of a new genus named Carcinonepa libererrantes.
- 01The fossil was discovered in 100-million-year-old amber from Myanmar's Kachin region.
- 02The new genus Carcinonepa was named, with the species name libererrantes inspired by the K-pop group Stray Kids.
- 03This insect's chelae evolved independently, representing the fourth known instance of such structures in insects.
- 04The study involved a morphological comparison of over 2,000 chelae from various species.
- 05The insect likely lived in a Cretaceous forest and used its claws to catch small prey.
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A remarkable discovery by researchers at Ludwig Maximilian University of Munich has unveiled a 100-million-year-old bug preserved in amber from Myanmar, featuring claw-like front legs that resemble crab pincers. This ancient insect, classified as a true bug (Heteroptera), has been assigned to a new genus named Carcinonepa, with the species name libererrantes reflecting the popular K-pop group Stray Kids. The chelae of this insect are significant as they represent the fourth independent evolution of such structures in insects, previously known from only three other groups. The research team utilized micro-computed tomography to create detailed 3D images of the fossil, enabling an extensive morphological comparison of over 2,000 chelae from both living and extinct species. The findings suggest that Carcinonepa libererrantes likely inhabited a Cretaceous coastal forest, using its oversized claws to seize small prey, similar to modern toad bugs.
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