Characterizing the taxonomic status of Sphingonotus caerulans in the upper Rhine Valley of Alsace (France) (Orthoptera, Acrididae, Oedipodinae)

Sphingonotus is a genus of grasshoppers that contains species groups with several closely related species, among which Sphingonotus caerulans and an unnamed Sphingonotus that are found in continental France. The exact distribution of both species is still under investigation, but it is believed that S. caerulans might be restricted to the northern part of the country, and that Sphingonotus sp. occurs in the southern half and might reach the north east. We explored the genetic identity of Sphingonotus grasshoppers in the upper Rhine Valley of Alsace (northeastern France) using combined fragments of mtDNA ND5 and cytb genes included with other available samples in ML and Bayesian phylogenetic analyses. The results indicate that the five specimens sampled within this region belong to S. caerulans. The actual distribution of Sphingonotus sp. in France remains to be investigated with wider sampling, especially to get a better knowledge on its northern limit.