- Britton, W. E., and M. P. Zappe. 1922. Miscellaneous insect notes. Pages 194-202. Connecticut Agricultural Experiment Station, Bulletin 234.
- Britton, W. E., and M. P. Zappe. 1927. Some insect pests of nursery stock in Connecticut. Pages 133-134. Connecticut Agricultural Experiment Station, Bulletin 292.