Polypedilum (Polypedilum) laetum (Meigen, 1818):

Büyük Menderes River (Dügel & Kazancı 2004), Gökpınar Creek (Denizli) (Duran et al. 2007), Blacksea region (Gültutan & Kazancı 2009), Marmara, Aegean, Sakarya river systems (Şahin 1987c), Eastern Blacksea region (Gültutan & Kazancı 2010), Eastern and Southeastern Anatolia regions streams and lakes (Şahin 1984), Kapıdağ Peninsula (Özkan 2012b), Elazığ province (Şahin 1980), Işıklı Lake, Denizli (Akbaba & Boyacı 2015).