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During the Genetic Barcoding of the digger wasps from Central Europe (see Schmidt et. al. 2015 for further details about this project), we could examine several specimens of the Psenulus pallipes group from Central Europe and from the mediterranean area. The Barcoding result clearly allows a distinction of P. chevrieri (=brevitarsis), P. pallipes a...
Citations
The present study brings together the scattered knowledge on species of Spheci-formes known from Poland. The study is based on available literature data, as well as unpublished information from the authors' and other private collections data since 2004. The list includes 247 species, with 243 taxa well documented and another 4 either doubtfully recorded or requiring further research. The following species have not been confirmed since 2004: Alysson pertheesi Gorski, 1852; A. ratze
Une liste des espèces rencontrées dans la réserve est proposée avec un commentaire sur les résultats (espèces rares ou remarquables, spectres écologiques...).
62 espèces ont été contactées dont 17 Crossocerus.
Plusieurs espèces remarquables sont représentées dans l'échantillon : Crossocerus acanthophorus, C. heydeni, C. styrius, Gorytes planifrons et Lestiphorus bicinctus.
J'ai également essayé de quantifier l'efficacité de la méthode employée pour échantillonner les Sphéciformes en utilisant des estimateurs de richesse spécifique (courbe d'accumulation, Chao, Jackkniffe 1 et 2, Bootstrap) avec R (package vegan, fonctions speccacum et specpool) : malgré un effort d'échantillonnage conséquent (3 Tentes en 2017, 2 en 2016) et une richesse importante observée (62), il resterait encore une proportion non négligeable d'espèces non répertoriées, principalement dans le cortège des sphéciformes fouisseurs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Malaise traps are used on the site of Réserve Naturelle du Ravin de Valbois (France, Doubs) (2 traps in 2016, 3 in 2017). 62 Sphecid wasps species (or species group, as Pemphredon gr lethifer, Passaloecus gracilis-turionum, or Psenulus pallipes-chevrieri) are found, with 17 Crossocerus species. Several uncommon species are found, as Lestiphorus bicinctus, Gorytes planifrons, Crossocerus acanthophorus, C. heydeni and C. styrius.
I estimate the species richess in the site, with some statistical tools (species curve, specpool in package vegan in R) and I think there are probably still many species to be found on the site (> 15 species).
We document the presence of the Palearctic Psenulus pallipes (Panzer, 1798) in Chile for the first time. We believe this represents an adventive population introduced into the Neotropical region most likely by accidental human transportation of nests. A map of distribution in Chile, illustrations of external morphology, and a discussion of morphological features to distinguish the introduced taxon from the Neotropical species are presented.
Identifying alien species is important to detect invaders early and to survey shifts in species ranges in the context of global change. Here we present the first recorded occurrences of the Mediterranean digger wasp Psenulus fulvicornis (Schenck, 1857) (Crabronidae) in Switzerland. To aid species identification and separation from the morphologically similar congener P. schencki (Tournier, 1889), which is known to occur in Switzerland, we show discriminating morphological characters and deliver the first DNA barcode sequences and a molecular phylogenetic tree of the mitochondrial cox1 locus from specimens sampled at the European scale. While the species can be readily separated by morphological characters, maximum likelihood and Bayesian inferred phylogenetic trees revealed the existence of polyphyly. Thus, we could not identify a barcoding gap at the European scale, which may hamper taxon identification. Nevertheless, cox1 sequences were diagnostic for all Central European specimens. Finally, an exhaustive revision of P. schencki accessions in the Swiss historical museum and private collections did not reveal overlooked specimens of P. fulvicornis. This confirms the status of P. fulvicornis as a new species to Switzerland, where it is currently only known from the Cantons of Zurich and Geneva; inhabiting warm lowland habitats such as urban gardens.
