Texananus pergradus DeLong 1938e: 185Membracoidea : Cicadellidae
|Diseases Transmitted||Pathogen Type|
|Crops Affected by Texananus pergradus DeLong 1938e: 185|
This species is a vector of the western strain of North American aster yellows virus. Severin (696) was first to report it as a vector of this virus in 1945 by demonstrating transmission from diseased celery to 7 of 248 healthy celery and 1 of 110 healthy aster plants.
This species is not considered an important vector in the natural spread of this virus owing to a low percentage of transmission and inability to live and breed on celery plants.
Small, robust species. male 4.00—4.60 mm., female 4.30—5.00 mm.
General color light tan to light brown. Crowii and pronotum light tan, suffused with light-brown reticulations; elytra light tan to ivory with numerous brown reticulations.
Pygofer in lateral aspect about as long as wide, caudal margin broadly convex; aedeagus in lateral aspect curved, tubelike, serrate on dorsal margin and notched at apex; gonopore terminal; connective with single apical process extending caudad; style in dorsal aspect simple, apices broad; female seventh sternum in ventral aspect with caudal margin sinuate and narrowly notched at middle.
to which it is similar in genital characteristics,
can be separated by the serrate dorsal margin of the aedeagal shaft in lateral aspect. The genitalia of this species are illustrated by DeLong and Severin (1945)
Severin (1945) presented colored illustrations of the adults.
|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.|