The chromose number and Karyotype of Plebeius (Plebejides) pylaon brethertoni from Mt. Helmos, Peloponnisos, Greece, its tentative elevation to species level, and notes about presently existing unsettled taxonomic question in the pylaon species-group comp

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith