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Related Experiment Video

Updated: Dec 16, 2025

Rearing and Double-stranded RNA-mediated Gene Knockdown in the Hide Beetle, Dermestes maculatus
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Mimicry in Cretaceous Bugs.

Erik Tihelka1, Michael S Engel2, Diying Huang3

  • 1Department of Animal Science, Hartpury College, Hartpury GL19 3BE, UK.

Iscience
|July 5, 2020
PubMed
Summary
This summary is machine-generated.

Fossil true bugs from Cretaceous amber remarkably resemble beetles. This discovery suggests ancient aggressive mimicry, offering insights into insect evolution and behavior.

Keywords:
EntomologyEvolutionary BiologyPaleobiologyPhylogeneticsSystematics

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Area of Science:

  • Paleontology
  • Evolutionary Biology
  • Entomology

Background:

  • Mimicry is widespread in nature, but fossil evidence for its evolutionary origins, especially behavioral aspects, is rare.
  • Understanding extinct animal behaviors is challenging due to limited fossil discoveries.

Purpose of the Study:

  • To describe new fossil true bugs (Hemiptera) from mid-Cretaceous amber that exhibit beetle-like morphology.
  • To investigate the paleoecology and potential behavioral strategies of these ancient insects.

Main Methods:

  • Description of new fossil genera and species: Bersta vampirica and Bersta coleopteromorpha.
  • Taxonomic placement into a new family, Berstidae.
  • Analysis of specialized mouthparts to infer feeding habits.

Main Results:

  • Discovery of bizarre true bugs resembling beetles preserved in mid-Cretaceous amber.
  • Identification of specialized mouthparts indicating a predatory diet on small arthropods.
  • The beetle-like appearance suggests defensive or aggressive mimicry.

Conclusions:

  • The findings represent a potential first case of aggressive mimicry in the invertebrate fossil record.
  • These fossils provide novel insights into Mesozoic insect paleoecology and extinct behavioral strategies.
  • The discovery expands knowledge of mimicry's evolutionary history in insects.