Re-examination of specimens of three species of Kampimodromus Nesbitt (Acari: Phytoseiidae) from north-eastern Italy, with first report on Kampimodromus corylosus Kolodochka in Italy

Specimens of phytoseiid previously identified as Kampimodromus aberrans (Oudemans), Kampimodromus ericinus Ragusa di Chiara and Tsolakis and Kampimodromus langei Wainstein and Arutunjan from north-eastern Italy were re-examined, with the use of morphometry. For each taxon, adult females from different collections were compared with literature information on female representatives of eight Kampimodromus species. We confirmed the identity of specimens previously identified as K. aberrans and K. langei. Specimens of K. langei differed from the holotype of Kampimodromus coryli Meshkov mainly by the absence of the gd5 dorsal idiosomal solenostomes. Specimens previously identified as K. ericinus were determined to be Kampimodromus corylosus Kolodochka, based on the length of certain dorsal setae. The largest morphometric setal variation was observed in K. aberrans; females bearing shorter setae were most similar to the topotype. Within the series of females of K. langei that were studied, those bearing longer setae were most similar to the holotype of the species. This is the first report on specimens of K. corylosus, collected from hazelnut, in Italy.