Xyeloidea

The Xyeloidea are a small superfamily within the Symphyta, containing fewer than 200 extant species, but with an extensive fossil record. They are sometimes believed to be the oldest group within the Hymenoptera. Most species occur in the Northern Hemisphere, especially in boreal regions. ...
Found on http://en.wikipedia.org/wiki/Xyeloidea

Xyeloidea

Xyeloidea is a super-family of insects of the sub-order Symphyta, order Hymenoptera. They are evolutionarily very old and have 12-segmented, unusually shaped antennae, the last nine segments being very short and weak.
Found on http://www.probertencyclopaedia.com/browse/BX.HTM
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