Xyeloidea
Encyclopedia
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.
Hymenoptera
Hymenoptera is one of the largest orders of insects, comprising the sawflies, wasps, bees and ants. There are over 130,000 recognized species, with many more remaining to be described. The name refers to the heavy wings of the insects, and is derived from the Ancient Greek ὑμήν : membrane and...
. Most species occur in the Northern Hemisphere, especially in boreal regions.