DAYFLY
mayfly, dayfly, shadfly
(noun) slender insect with delicate membranous wings having an aquatic larval stage and terrestrial adult stage usually lasting less than two days
Source: WordNet® 3.1
Etymology
Noun
dayfly (plural dayflies)
A mayfly.
Anagrams
• ladyfy
Source: Wiktionary
Day"fly`, n. (Zoöl.)
Definition: 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.
Source: Webster’s Unabridged Dictionary 1913 Edition