Texananus oregonus (Ball 1931g: 85 )Membracoidea : Cicadellidae
|Diseases Transmitted||Pathogen Type|
|Crops Affected by Texananus oregonus (Ball 1931g: 85 )|
This species is a vector of the western strain of the North American aster yellows virus. In 1945 Severin (696) reported it first as a vector of this virus under the name of “Texananus pergradus DeLong as a vector,” which was an obvious typographical error. Discussion of the transmission experiments referred to the data on page 47 (table 19) under the heading “Texananus oregonus.” The virus was transmitted by males to 11 of 26 celery and by females to 17 of 41 celery plants.
This species is not considered an important vector in the natural spread of this virus in California.
Medium size, robust species. Length of male 6.00—6.50 mm., female 6.20—6.80 mm.
General colour light brown to dark brown. Crown and pronotum tan, suffused with numerous brown reticulations; elytra tan with numerous brown or black reticulations.
Pygofer in lateral aspect about as long as wide, caudal margin broadly convex; aedeagus in lateral aspect broad basally, narrowly attenuated apically, curved laterally; connective with paired apical processes, very broad, distinctly toothed along lateral margin; style in dorsal aspect simple, apices truncate; female seventh sternum in ventral aspect with caudal margin unevenly excavated.
species has unique male genitalia and can be distinguished from other vector species in
by the broad lateral processes, arising ventrally from the base of the aedeagus, which are strongly pectinate apically. The genitalia are illustrated by DeLong and Severin in (1945) and Crowder (1952
Severin (1945) ) illustrated the adults in colour.
|Nielson, M. W. 1968b. The leafhopper vectors of phytopathogenic viruses (Homoptera, Cicadellidae). Taxonomy, biology and virus transmission. United States Department of Agriculture Technical Bulletin . 1382 386 pp.|