The Collaborative International Dictionary of English v.0.48:

Entomophilous \En`to*moph"i*lous\, a. [Gr. ? insect + ? a
   lover.] (Bot.)
   Fertilized by the agency of insects; -- said of plants in
   which the pollen is carried to the stigma by insects.
   [1913 Webster]

WordNet (r) 3.0 (2006):

entomophilous
    adj 1: of flowering plants (especially orchids etc) that are
           pollinated by insects [ant: anemophilous]