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"Following the publication of Martin Baehr in 1987 on the Australian Wildlife Tachyura we had renewed interest for this group of species. Indeed, this major revision describes eight new taxa from Australia and Tachyura divided into eight groups of species at different evolution stages called "primitive" or "derivatives" ; and we were surprised by the remarkable diversity of these taxa in Australia.
It is only after a few years we could deepen our studies by looking the important work of Terry Erwin (NMHN Smithsonian Institution). It appears that the Tachyina biodiversity from America and Oceania been extensively revised upwards and endemism of the species seems closer than it appears.
Some works were undertaken in Europe, but the only important papers seems be those of Coulon, 2004 and Coulon and Wrase, 2009 from France (Mediterranean Basin).
Describing gradually so many new Bembidiini taxa we thought "all already discovered", the authors defined a specific endemism increasingly narrow.
As a result, this complex called now: the Tachyina subtribe, deserves to be further studied in Europe to better understanding of the segregation of these species and to better define their distribution.
We (Christophe Avon and Pasacale Courtial) have therefore explored in this direction in France (Mediterranean area) for several years. Many specimens have been discovered and stored in alcohol, to allow preservation optimally for future dissection.
Today (2014), and after an exhaustive study of all taxa stored to LEFHE Laboratory, we can confirm that many specific segregation exist in the south of France.
In this paper, C. Avon & P. Courtial give a description of eighteen new species of these Ground Beetles (Coleoptera, Carabidae) and give a geographical distribution of groups from the south of France, Provence-Alpes-Côte-d'Azur area".
Laboratory of Entomology LEFHE MAHN -06