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(zoology) Having a haustellum, or sucking proboscis.
plural haustellates
A haustellate insect. quotations examples
Bees form part of that section of insects called mandibulate insects, i.e., insects which eat with jaws, in contradistinction to the haustellates, or insects which suck up liquid food through a trunk .
1853, John George Wood, Bees, page 19