Biosteres longicauda (Thomson, 1895)

Distribution in Iran. Khorasan (Samin et al. 2011), North Khorasan (Samin 2015).

Distribution outside Iran. Austria (Fischer 1977b, 1980; Yu et al. 2012), Moldova (Lelej 2012; Yu et al. 2012), China, France, Italy, Slovenia, former Yugoslavia (Yu et al. 2012), Czech Republic, Denmark, Finland, Switzerland (Fischer and Koponen 1999; Yu et al. 2012), Germany (Belokobylskij et al. 2003; Yu et al. 2012), Lithuania (Jakimavicius 1977 as Opius vilnensis; Yu et al. 2012), Russia (Fischer 1984; Tobias 2000; Lelej 2012; Yu et al. 2012), Sweden (Thomson 1895 as Opius longicauda; Fischer and Koponen 1999; Yu et al. 2012), Turkey (Beyarslan and Fischer 2011, 2013; Fischer and Beyarslan 2012; Beyarslan 2015).

Host records. In Finland this species is reported from Pegomya hyoscyami (Panzer, 1809) on Chenopodium bonus-henricus (L.) (Fischer and Koponen 1999).