pentamera

from The Collaborative International Dictionary of English v.0.48

Pentamera \Pen*tam"e*ra\, n. pl. [NL. See {Pentamerous}.]
   (Zool.)
   An extensive division of Coleoptera, including those that
   normally have five-jointed tarsi. It embraces about half of
   all the known species of the Coleoptera.
   [1913 Webster]