Dayfly n. : A neuropterous insect of the genus Ephemera and related genera, of many species, and inhabiting fresh water in the larval state; the ephemeral fly; -- so called because it commonly lives but one day in the winged or adult state. See Ephemeral fly, under Ephemeral.

Example:
Does anyone know how to get the Dayfly in the legend of zelda Twilight princess?

Taxonomy
BUTTERFLY, BUTTERFLY WEDDING, NECKLACE, WEDDING INVITATION, PAINTING, BUTTERFLY KNIFE, BUTTERFLY JEWELRY, Float like a butterfly, Butterfly Garden, Butterfly Screensaver, plant pollinators, food, animals, birds, mammals, spiders, insects, sting.

Defination from the web:
dayfly.net There are more than 20,000 different kinds of butterflies in the world. ... Butterflies are important as plant pollinators and as food for other animals (birds, mammals, spiders, and other insects) ...