Grand Teton National Park Report
Cyphoderris is a primitive orthoptera genus, a relict of the family Haglidae. This family is known almost exclusively from fossil remains (Sharov, 1968). Only one other recent genus exists, Prophalangopsis, based upon a single specimen collected in Asia before the turn of the century (Zeune, 1939).
Morris, G. K. and Gwynne, D. T.
"Biology and Reproductive Behaviour of Cyphoderris strepitans,"
University of Wyoming National Park Service Research Center Annual Report: Vol. 3
, Article 10.
Available at: https://repository.uwyo.edu/uwnpsrc_reports/vol3/iss1/10