New species of Entomobryini from the Mediterranean Palaearctic (Collembola, Entomobryidae) and a new name for Folsomia potapovi (Collembola, Isotomidae)

New species of the genera Entomobrya and Mesentotoma from the Mediterranean Palaearctic region are described: Entomobrya akritohoriensis n. sp. from Greece, Entomobrya luqueensis n. sp. and Entomobrya vergarensis n. sp. from Spain, Entomobrya transversalis n. sp. from Morocco, and Mesentotoma hispanica n. sp. from Spain. A new name is proposed for Folsomia potapovi Jordana & Baquero 2008 nec Babenko 2007. During the revision of the genus Entomobrya from the Palaearctic, a great number of specimens from different localities were studied. It is relatively common to find new species that had not been detected due to their similar coloration with previously described species. The combined use of colour and macrochaetotaxy allows the identification of new species and provides a reliable differentiation and characterisation of new species. Two new species are described from a single specimen. One of them (from Greece) is clearly separated from all other Entomobrya species due to its chaetotaxy of Abd IV. It is very similar to the species of the genus Homidia; the other one is a specimen found among the material labelled as E. atrocincta, deposited in the Museum National d’Histoire Naturelle at Paris, with a very characteristic colour and chaetotaxy. The rest of the described species have been compared with species sharing similar coloration and chaetotaxy. The combination of characters proposed by Jordana & Baquero (2005) has been used for the identification of these specimens.