Longest ears for a bat (proportionate to body)

Longest ears for a bat (proportionate to body)
Who
spotted bat <i>Euderma maculatum</i>
Where
North America ()
When

The bat species with the proportionately longest ears is the spotted bat Euderma maculatum, native to southwestern Canada, the western USA and northern Mexico. Its translucent pink ears each measure up to 5 cm long, whereas its entire head-and-body length is only 6–7.7 cm long.