Leaf-cutter bee damage on Lauraceae leaves from the middle Eocene Anglesea fossil site conflicts with current phylogenies for megachilids (Hymenoptera: Megachilidae) in Australia
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Abstract
Damage to the margin and surface of fossil leaves has been used to identify the likely insect groups involved and to track potential changes in insect communities through evolutionary time. The Anglesea fossil site in Victoria, Australia, has a rich array of fossil leaves preserved in clay and clay-sand through six fossil lenses dated at late middle Eocene, ~40 Ma. Examination of a large number of fossil leaves and comparison to Northern Hemisphere fossils and modern damage has resulted in 12 with unique margin excisions postulated to be caused by megachilid leaf-cutter bees. Such findings precede the current dated megachilid phylogeny by ~24 million years. This study aims to draw attention to this discrepancy which may have implications for the understanding of megachilid dispersal events into Australia.
期刊介绍：
Austral Entomology is a scientific journal of entomology for the Southern Hemisphere. It publishes Original Articles that are peer-reviewed research papers from the study of the behaviour, biology, biosystematics, conservation biology, ecology, evolution, forensic and medical entomology, molecular biology, public health, urban entomology, physiology and the use and control of insects, arachnids and myriapods. The journal also publishes Reviews on research and theory or commentaries on current areas of research, innovation or rapid development likely to be of broad interest – these may be submitted or invited. Book Reviews will also be considered provided the works are of global significance. Manuscripts from authors in the Northern Hemisphere are encouraged provided that the research has relevance to or broad readership within the Southern Hemisphere. All submissions are peer-reviewed by at least two referees expert in the field of the submitted paper. Special issues are encouraged; please contact the Chief Editor for further information.
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