Graphocephala dolobrata (Ball 1901b: 52)Membracoidea : Cicadellidae
|Diseases Transmitted||Pathogen Type|
|Crops Affected by Graphocephala dolobrata (Ball 1901b: 52)|
This species is a vector of Pierce’s disease virus of grape in California. Under the name of “hieroglyphica” this species was first incriminated as a vector of this virus by Frazier in 1944 (273). Confirmation was established by Frazier and Freitag in 1946 (275), and by 1952 Freitag et al. (287) reported 50- and 11-percent efficiency in transmitting the virus from diseased grape and alfalfa to healthy grape and alfalfa, respectively.
This species is not considered an important vector of Pierce’s disease virus of grape.
Medium size, slightly robust Species. Length of male 5.50—5.70 mm., female 6.00—6.40 mm.
General colour purplish brown to purplish black. Crown yellow to ivory with deep broad purplish black markings; pronotum with ivory and purplish black markings; scutellum with distinct yellow to ivory longitudinal spot on middle, lateral angles purple; elytra purple to purplish black with ivory band along claval suture, cIavus sometimes with ivory lines; colour deeper in males.
Pygofer in lateral aspect about 1½ times as long as wide, caudal margin broadly convex; aedeagus in lateral aspect with shaft broad, asymmetrical; aedeagal processes triangulate; paraphyses asymmetrical; style in dorsal aspect simple; female seventh sternum in ventral aspect with caudal margin distinctly convex.
This species, allied to
is difficult to separate on the basis of the genitalia. The shaft of the aedeagus of
in lateral aspect is about the same width distally as basally and the caudal margin of the pygofer is truncate.
|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.|