snow-fly

from The Century Dictionary.

• noun A perlid insect or kind of stone-fly which appears on the snow, as Perla nivicola of Fitch.
• noun A neuropterous insect of the family Panorpidæ and genus Boreus, as B. nivoribundus, which appears on the snow in northerly parts of the United States. Also called springtail.
• noun A wingless dipterous insect of the family Tipulidæ and genus Chionea, as C. valga, occurring under similar circumstances. Also snow-gnat.
• noun A snow-gnat.
• noun A snow-flea.