digger wasp

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of several burrowing, usually solitary wasps of the family Sphecidae that excavate nests in soil which they provision with prey paralyzed by stinging for their larvae to feed on.

from The Century Dictionary.

• noun The popular name of the fossorial hymenopterous insects of the families Scoliidæ, Pompilidæ, and Sphegidæ, most of which dig burrows in the ground, in which they lay their eggs, provisioning each cell with the bodies of other insects, on which their larvæ feed after hatching.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of several solitary, predatory wasps, of the family Sphecidae, that nest in the soil

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun solitary wasp that digs nests in the soil and stocks them with paralyzed insects for the larvae