Picea pungens Engelm.
| List of Birds Observed in Estes Park, Colorado, from June 10 to July 18, 1910 Otto Widmann (1911) The Auk 28: 304-319 | |
| Description of a new seed chalcid from spruce S A Rohwer (1915) Canadian Entomologist 47: 97-98 | |
| Some Colorado species of the genus Lachnus Gillette (1917) Annals of the Entomological Society of America 10: 133-144 | |
| A new mymarid from Java A P Dodd (1919) Entomologist 52: 161-162 | |
| A List of the Phytophagous Chalcidoidea, with Descriptions of two New Species (1922) Proceedings of The Entomological Society of Washington 24: 33-58 | |
| A review and key of North American Cinara (Homoptera: Aphididae) occurring on Picea Hottes (1961) Great Basin Naturalist 21: 35-50 |