Al. Hicks et Rf. Whitcomb, THE GENUS LAEVICEPHALUS (HOMOPTERA, CICADELLIDAE) - HOSTS, BIOGEOGRAPHY, AND 3 NEW SPECIES, Proceedings of the Entomological Society of Washington, 95(3), 1993, pp. 481-487
The genus Laevicephalus is comprised of small deltocephaline leafhoppe
rs of North American grasslands. Although most species are southwester
n and/or Mexican, some are northern or eastern. Southwestern species a
re largely associated with chloridoid (Poaceae: Chloridoideae) grasses
. Some species are monophagous; others are oligophagous. Oligophagy co
efficients are presented for 15 species of prairie and/or southwestern
grasslands. Three new species are described: L. warnocki from chino g
rama (Bouteloua ramosa) in Big Bend National Park in Texas, L. navajo
from montane blue grama (B. gracilis) grasslands of the Mogollon Rim a
nd Sacramento Mountains of Arizona and New Mexico, and L. nosabe from
side-oats grama (B. curtipendula) in Durango, Mexico.