Phylogenetic Analysis of Insect Diversity in Amber

Amber deposits have yielded an unparalleled record of Cretaceous and Palaeogene insects, preserving both delicate morphological features and ecological interactions in three dimensions. Phylogenetic analyses of these inclusions draw on detailed anatomical study, cladistic character matrices and, where possible, molecular proxies to resolve evolutionary relationships among extinct lineages and their extant relatives. Research has illuminated major radiations in groups such as hemipterans, psocids and dermapterans, shedding light on the origins of key feeding strategies, wing-folding mechanisms and reproductive specialisations. Integrative approaches combining high-resolution imaging, geometric morphometrics and computational phylogenetics have refined our understanding of character evolution, revealing both cases of long-term morphological stasis and rapid adaptive innovations. This work not only reconstructs ancient ecosystems but also informs modern biodiversity assessments by clarifying deep-time patterns of lineage diversification and extinction. The global significance of amber-preserved insects is thus twofold: they provide benchmarks for calibrating molecular clocks and exemplify the complex interplay between form, function and environment over geological timescales.

Research from Nature Portfolio

Recent studies have exploited exceptionally preserved mid-Cretaceous amber inclusions to describe novel lineages and trace the onset of specialised feeding behaviours. One investigation reported a new family of integument-feeding insects associated with partially damaged dinosaur feathers, demonstrating that ectoparasitic niches and feather-feeding strategies originated by approximately 100 million years ago. Another seminal contribution involved the description of a previously unrecognised fossil order within hemimetabolous insects, which bridges the transition from chewing to piercing mouthparts and elucidates the monophyly of Acercaria. Detailed anatomical reconstructions of these fossils, combined with character-based phylogenetic matrices, have confirmed major divergences among sucking and pollenivorous lineages and highlighted key innovations—such as suction feeding—that underpin the subsequent radiation of hemipterans.

Phylogenetic Analysis of Insect Diversity in Amber publication trend

The graph below shows the total number of articles in phylogenetic analysis of insect diversity in amber across all publications each year (not limited to Nature Index journals).

Technical terms

Amber: Fossilised tree resin that entombs and preserves organisms, often retaining three-dimensional morphology and microstructural detail.

Phylogenetic analysis: A methodological framework using morphological or molecular character data to infer the evolutionary relationships and divergence patterns among taxa.

Monophyly: The condition of a group of organisms consisting of a common ancestor and all its descendants, forming a single clade in a phylogenetic tree.

Clade: A lineage or branch of the evolutionary tree that includes an ancestral species and all its descendant species.

Taphonomic bias: The differential preservation of organisms or behaviours in the fossil record due to decay, transport or depositional environment, which can skew interpretations of past biodiversity.

References

1. New insects feeding on dinosaur feathers in mid-Cretaceous amber. Nature Communications (2019).
2. New fossil insect order Permopsocida elucidates major radiation and evolution of suction feeding in hemimetabolous insects (Hexapoda: Acercaria). Scientific Reports (2016).
3. New barklice (Psocodea, Trogiomorpha) from Lower Cretaceous Spanish amber. Papers in Palaeontology (2022).
4. A new species of Astreptolabis in mid-Cretaceous amber from northern Myanmar, with the discovery of the first male of Astreptolabidinae (Dermaptera). ZooKeys (2020).
5. New Genus and Species of Empheriidae (Insecta: Psocodea: Trogiomorpha) and Their Implication for the Phylogeny of Infraorder Atropetae. Frontiers in Ecology and Evolution (2022).