Bombus robustus Smith, 1854
| Descriptions of New Species of Hymenoptera Taken by Mr. Edward Whymper on the "Higher Andes of the Equator" P Cameron (1903) Transactions of The American Entomological Society 29: 225-238 | |
| The Bombidae of the New World H J Franklin (1912) Transactions of the American Entomological Society 39: 73-200 | |
| Bees from Ecuador and Peru (1914) New York J Ent Soc 22: 306-328 | |
| The subgeneric division of the genus Bombus Latreille (Hymenoptera: Apidae) O W Richards (1968) Bulletin of the British Museum (Natural History), Entomology 22: 209-276 | |
| THE SUBGENERIC DIVISIONS OF THE GENUS BOMBUS HYMENOPTERA APIDAE O W Richards (1968) Bulletin of The British Museum (Natural History) Entomology 22: 211-276 |