father longlegs

from The Collaborative International Dictionary of English v.0.48

Daddy longlegs \Dad"dy long"legs`\
   1. (Zool.) An arachnidan of the genus {Phalangium}, and
      allied genera, having a small body and four pairs of long
      legs; -- called also {harvestman}, {carter}, and
      {grandfather longlegs}.
      [1913 Webster]

   2. (Zool.) A name applied to many species of dipterous
      insects of the genus {Tipula}, and allied genera, with
      slender bodies, and very long, slender legs; the crane
      fly; -- called also {father longlegs}.
      [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Father longlegs \Fa"ther long"legs`\ (Zool.)
   See {Daddy longlegs}, 2.
   [1913 Webster]