UF/IFAS lists Rubus (blackberry) as a documented Io moth larval host; allegheny blackberry is Rubus allegheniensis (genus-level inference).
Rubus (blackberry/raspberry) is a documented Io moth host per UF/IFAS; red raspberry is Rubus idaeus (genus-level inference).
UF/IFAS and BAMONA list Salix (willow) as a documented Io moth larval host; black willow is Salix nigra (genus-level inference).
UF/IFAS and BAMONA list Celtis (hackberry) as a documented Io moth larval host; common hackberry is Celtis occidentalis (genus-level inference).
Populus (cottonwood/poplar) is a documented Io moth host per UF/IFAS, with eastern cottonwood named; genus-level inference.
UF/IFAS (EENY-608) lists Cercis (redbud) as a documented Automeris io larval host; this eastern redbud is a genus-level inference.
Salix (willow) is a documented Io moth host per UF/IFAS; pussy willow is Salix discolor (genus-level inference).
UF/IFAS lists Populus (aspen/poplar/cottonwood) as a documented Io moth larval host, with quaking aspen named; genus-level inference.
UF/IFAS (EENY-608) lists Acer (maple) as a documented Io moth larval host; red maple is Acer rubrum (genus-level inference).
Acer (maple) is a documented Io moth host per UF/IFAS; sugar maple is Acer saccharum (genus-level inference).
Salix (willow) is a documented Io moth host per UF/IFAS; weeping willow is Salix babylonica (genus-level inference).
UF/IFAS lists Cercis (redbud) as an Io moth host; western redbud (Cercis occidentalis) is a genus-level inference, not species-cited.