species

Tortistilus wickhami (Van Duzee, 1908)

Stictocephala wickhami Van Duzee, 1908a: 44. (valid in Metcalf & Wade, 1965b: 801)
Syntype; male; c063d8c7-912d-4951-8fc9-0b0789c37512; deposited at: California Academy of Sciences (CASC); U.S.A., California: taken by Prof. H.F. Wickham at Truckee, 5800 feet altitude; in August. Syntype; female; cb8918db-c6eb-4e87-8511-fce38b2fa30c; deposited at: California Academy of Sciences (CASC); U.S.A., California: taken by Prof. H.F. Wickham at Salton, 225 feet altitude, in August
Stictocephala wickhami Van Duzee, 1908 (subjective synonym of Thelia substriata Walker, 1851) in Van Duzee, 1917b: 527.

Gender, form, and etymology

Etymology:

in honor of Henry F. Wickham (1866-1933), an English-born American entomologist who studied beetles at University of Iowa

Caldwell, J.S. (1949a) A generic revision of the treehoppers of the tribe Ceresini in America north of Mexico, based on a study of the male genitalia. Proceedings of the United States National Museum, 98(3234), 491–521.
Metcalf, Z.P. & Wade, V. (1965b) General catalogue of the Homoptera. A supplement to Fascicle I - Membracidae of the general catalogue of the Hemiptera. Membracoidea in two sections. Section II. Part 1 - Membracidae (continued): Smiliinae, Tragopinae, Membracinae. Part 2 - Aetalionidae. Part 3 - Biturritiidae. Part 4 - Nicomiidae. USA: Waverly press, Inc., Baltimore, MD, 744–1552 pp.

Van Duzee, E.P. (1908a) Studies in North American Membracidae. Bulletin of the Buffalo Society of Natural Sciences, 9, 29–127.
Van Duzee, E.P. (1917b) Catalogue of the Hemiptera of America north of Mexico excepting the Aphididae, Coccidae and Aleurodidae. Technical Bulletin. University of California, College of Agriculture, Agricultural Experiment Station. Entomology. Berkeley, 2, 1–902.

	Valid names
Rank	Extant	Fossil	Invalid	Total
species	1	0	1	2