Texananus lathropi (Baker 1925a: 159 )Membracoidea : Cicadellidae
|Diseases Transmitted||Pathogen Type|
|Crops Affected by Texananus lathropi (Baker 1925a: 159 )|
This species is a vector of the western strain of North American aster yellows virus. Transmission of the virus was first reported by Severin in 1945 (696). Males infected 28 of 150 celery plants and females 24 of 150 after feeding on infected celery. The virus was also transmitted to a higher percentage of celery when aster and celery plants were used alternatively at weekly intervals than at daily intervals. Only 4 percent of the aster plants used were infected at daily and none at weekly intervals. The minimum latent period of the virus in the insect was 7 to 8 days. Virus retention by males varied from S to 77 days and by females from 0 to 62 days. The number of infections increased with the length of acquisition feeding period and the number of insects used. The species failed to transmit curly top virus of sugarbeet and Pierce’s disease virus of grape.
This species at present is not considered an important vector, because it is not directly associated with celery fields and is unable to reproduce and survive on this plant.
Medium size, robust species. Length of male 5.30 mm., female 5.50 mm.
General colour tan with numerous dark reticulations on body. Crown and pronotum tan with light-brown reticulations; elytra ivory with numerous very dark-brown reticulations.
Pygofer in lateral aspect about 1½ times as long as wide, candal margin broadly convex; aedeagus in lateral aspect curved, broad basally, narrowly attenuated apically; gonopore apical; connective with single apical process extending beyond apex of aedeagal shaft; style in dorsal aspect with apex notched; female seventh sternum in ventral aspect with caudal margin distinctly excavated at middle, broadly but shallowly concave on either side of excavation.
to which it is similar in male genital characteristics,
can be distinguished by the longer and broader ventral process of the aedeagus in dorsal aspect, the long pointed apex of the aedeagal shaft in lateral aspect, and the style which is excavated apically.
|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.|