A total of 82 species of entomopathogenic nematodes (EPNs) has been identified worldwide belonging to
Steinernema (65), Neosteinernema (1) and Heterorhabditis (16). This number is going up in parallel to new
investigations. Five species of Steinernema and three Heterorhabditis species were identified in Turkey. There are
only a few literature supports about detrimental effects of Turkey origin EPNs on maleficent groups having
economical importance.