Superorder Neuropterida Order Megaloptera Latreille, 1802 - alderflies Family Sialidae Leach, 1815 - alderflies Genus Sialis Latreille, 1802 - alderfly 1 †Sialis groehni Wichard, 1997 2 Subgenus Protosialis van der Weele, 1909 3 †Sialis muratensis Nel, 1988a 4 †Sialis strausi Illies, 1967