The Collaborative International Dictionary of English v.0.48:

Haustellata \Haus`tel*la"ta\ (h[add]s`t[e^]l*l[=a]"t[.a]), n.
   pl. [NL., fr. haustellum, fr. L. haurire, haustum, to draw
   water, to swallow. See Exhaust.] (Zool.)
   An artificial division of insects, including all those with a
   sucking proboscis.
   [1913 Webster]