The aquatic and semiaquatic Hemiptera from 12 localities in Marble Canyon and Grand Canyon are reported, along with those from 1 locality in the Escalante Canyon. Fourteen species are recorded and compared to the water-bug fauna of the southwestern United States and western Mexico. Ochterus rotundus n. sp. is described from the Grand Canyon and the mountains of western Mexico.
Polhemus, John T. and Polhemus, Martin S.
"Aquatic and semiaquatic Heteroptera of the Grand Canyon (Insecta: Hemiptera),"
Great Basin Naturalist: Vol. 36
, Article 4.
Available at: http://scholarsarchive.byu.edu/gbn/vol36/iss2/4