Discovery of Eupholidoptera tyrrhenica in the Landes, a new example of naturalization among Ensifera (Orthoptera, Tettigoniidae).
Eupholidoptera chabrieri (Charpentier, 1825) was found in the Landes (SW France) in the early 2000s but did not appear to have been observed since. Investigations have been carried out in order to find again the locality and assess the local status and origin of the species. In addition to the Landes, five other reports were recorded in southwestern France (Nouvelle Aquitaine and western Occitanie), but none seems to be confirmed for E. chabrieri as far we can tell. The field searches carried out on the Landes station led to the rediscovery of a significant Eupholidoptera population, colonizing fallow lands, edges and brambles, near the place of discovery in 2000. However, the study of the titillators leads to taxa similar to Eupholidoptera magnifica (Costa, 1863) rather than E. chabrieri. Some specimens were then submitted to genetic analysis, resulting in the identification of the Corsican marbled bush-cricket Eupholidoptera tyrrhenica Allegrucci, Massa, Trasatti & Sbordoni, 2014. The species may have been introduced together with citrus plants from Corsica by a plant nursery localized nearby. It is therefore a new alien species for Aquitaine, which brings to four the number of alien Orthoptera species settled in this territory. Future research will be required to assess the range of the population.