orbitelae

from The Collaborative International Dictionary of English v.0.48

Orbitelae \Or`bi*te"lae\, n. pl. [NL., fr. L. orbis an orb +
   tela a web.] (Zool.)
   A division of spiders, including those that make geometrical
   webs, as the garden spider, or Epeira.
   [1913 Webster]