Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Hymenoptera of America North of Mexico - Synoptic Catalog
By C.F.W. Muesebeck and Karl V. Krombein
United States Department of Agriculture, Agriculture Monograph No. 2, 1951
Cite: 2015975 with citation markup [cite:2015975]