“…The CCN Heterodera avenae is reported in 1962(Scotto La Massèse, 1962and Lamberti et al, 1975. Surveys have revealed that H. avenae species is common occurring in the main cereal-producing regions but other CCN were recorded H. latipons, H. mani, H. filipjevi and H. hordecalis Haddadi, 2015;Labdelli, 2015;Tirchi et al, 2016;Righi Assia et al, 2019;Smaha et al, 2018a;Smaha et al, 2018b;Smaha et al, 2019, Rahim et al, 2020Mehalaine et al, 2020). Heterodera carotae and Heterodera cruciferae were reported by Mehalaine et al (2020) for the first time in Algeria.…”