Source : Webster's Revised Unabridged Dictionary (1913)

Haustellata \Haus`tel*la"ta\, n. pl. [NL., fr. haustellum, fr.
   L. haurire, haustum, to draw water, to swallow. See
   {Exhaust}.] (Zo["o]l.)
   An artificial division of insects, including all those with a
   sucking proboscis.