Superorder Neuropterida Order Megaloptera Latreille, 1802 - alderflies Family Sialidae Leach, 1815 - alderflies Genus Sialis Latreille, 1802 - alderfly Subgenus Protosialis van der Weele, 1909 †Sialis voigti W. Wichard & M.S. Engel, 2006