Discovery of Besdolus bicolor (Navás, 1909) in France, and complements to the description of its vibrational duet (Plecoptera, Perlodidae)

Abstract

Besdolus bicolor (Navás, 1909) is identified for the first time in France. Surveys resulted in the collection of individuals from historically known or more recently stations, as well as the examination of specimens stored in collections (previously identified as “Besdolus ventralis”). The species is present in the southern third of France. Its distribution is compared with that of other Besdolus, thus allowing us to observe an overlap or proximity of distribution areas for certain species. Recordings of sexual vibrational signals from France confirmed the species identification and allowed for the description of the female’s answer and the duetting pattern.