BioStor
 | Papers from the Harriman Alaska Expedition 28. Hymenoptera W H Ashmead (1902) Proceedings of the Washington Academy of Sciences 4: 117-274 |
 | Additional results of collecting insects in Kansas and Colorado E S Tucker (1909) Transactions of the Kansas Academy of Sciences 22: 276-304 |
 | On a collection of Tenthredinoidea from eastern Canada S A Rohwer (1910) Proceedings of The United States National Museum 38: 197-209 |
 | The thorax of the Hymenoptera Robert Evans Snodgrass (1910) Proceedings of The United States National Museum 39: 37-91 |
 | Primary insect types in the Illinois Natural History Survey collection, exclusive of the Collembola and Thysanoptera Donald W Webb (1980) Bulletin Illinois Natural History Survey 32(2): 55-189 |