Brunelle, P.-M. and P.G. deMaynadier. 2005. The Maine damselfly and dragonfly survey. A final report. A preport prepared for Maine Department of Inland Fisheries and Wildlife (MDIFW). 31 pp.
COSEWIC. 2018. COSEWIC assessment and status report on the Pygmy Snaketail (Ophiogomphus howei) in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. https://www.canada.ca/en/environment-climate-change/services/species-risk-public-registry/cosewic-assessments-status-reports/pygmy-snaketail-2018.html
Dunkle, S.W. 2000. Dragonflies through binoculars: A field guide to dragonflies of North America. Oxford University Press: 266 pp.
Mead, K. 2003. Dragonflies of the North Woods. Kollath-Stensaas Publishing, Duluth, MN. 2003 pp.
NatureServe. 2021. NatureServe Explorer [web application]. NatureServe, Arlington, Virginia. Available https://explorer.natureserve.org/. (Accessed: April 8, 2021).
New York Natural Heritage Program. 2021. Element Occurrence Database. State University of New York College of Environmental Science and Forestry, Albany, NY.
New York Natural Heritage Program. 2023. New York Natural Heritage Program Databases. Albany, NY.
New York State Department of Environmental Conservation. 2005. Comprehensive Wildlife Conservation Strategy Planning Database. New York State Department of Environmental Conservation. Albany, NY.
Nikula, B., J.L. Loose, and M.R. Burne. 2003. A field guide to the dragonflies and damselflies of Massachusetts. Division of Fisheries and Wildlife, Natural Heritage and Endangered Species Program, Westborough, MA. 197 pp.
Paulson, D. 2011. Dragonflies and damselflies of the east. Princeton University Press, Princeton, New Jersey, USA.