New palaeobiogeographical investigations on stoneflies (Plecoptera)

Publication Type:Conference Paper
Year of Publication:2016
Authors:Y. Cui, Kondratieff, B., D’HAESE, C. Y. R. I. L. L. E. A., Shih, C., Ren, D., Laurin, M., Béthoux, O.
Conference Name:The 7th International Conference on Fossil Insects, Arthropods and Amber
Date Published:26/04/2016
Publisher:Siri Scientific Press
Conference Location:National Museum of Scotland, Edinburgh

The 16 recognised extant stonefly families of the hexapod order Plecoptera are characterised by a primarily disjunctive global distribution. As indicated by the names, the suborders Antarctoperlaria and Arctoperlaria refer to the distributions in the Southern and Northern Hemisphere, respectively. With a few exceptions (e.g. the occurrence of Perlidae and Notonemouridae [Arctoperlaria] in the Southern Hemisphere), this distribution pattern makes the group suitable for historical biogeographical investigations. It has been proposed that the Arctoperlaria and Antarctoperlaria diverged during the Jurassic period. The main impediments to resolving stimulating evolutionary questions are the problematic taxonomic assignment of fossil species and a weakly constrained phylogenetic framework. In recent years, we have produced a number of descriptions and revisions of Paleozoic and Mesozoic species of this order. This presentation summarises this recent progress, including a new investigation of the affinities of Sinosharaperla zhaoi and the description of the first fossil Pteronarcyidae (based on a series of more than ten specimens). The next steps of the project, including the description of amber material, and the elaboration of a timetree, will be outlined.

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