Sphex ichneumoneus (Great Golden Digger Wasp) is a species of Hymenoptera in the family sphecid wasps. They visit flowers of Suisun Marsh aster, Ruth's milkweed, Humiria, and Eryngium pendletonensis. They are diurnal. Individuals can grow to 24 mm.
EOL has data for 8 attributes, including: