The Collaborative International Dictionary of English v.0.48:

ixodid \ixodid\ n.
   a member of the Ixodidae, a family of ticks having a hard
   shield on the back and mouth parts that project from the
   head.

   Syn: hard tick.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

ixodid
    n 1: ticks having a hard shield on the back and mouth parts that
         project from the head [syn: hard tick, ixodid]