Children (17 direct children, 17 direct and indirect children):
Heydenius dominicus
Heydenius araneus
Heydenius brownii
Heydenius antiquus
Heydenius matutinus
Heydenius quadristriatus
Heydenius cecidomyae
Heydenius dipterophilus
Heydenius lamprophilus
Heydenius neotropicus
Heydenius psychodae
Heydenius saprophilus
Heydenius scatophilus
Heydenius sciarophilus
Heydenius tabanae
Heydenius formicinus
Heydenius myrmecophila