Colladonus intricatus (Ball 1911a: 198 )Membracoidea : Cicadellidae
|Diseases Transmitted||Pathogen Type|
|Crops Affected by Colladonus intricatus (Ball 1911a: 198 )|
This species is a vector of the western strain of North American aster yellows virus. Under the name of “Friseananus intricatus (Ball)” it was first reported as a vector of this virus by Severin (701, 703, 704). Transmission was effected from diseased celery to healthy celery in 9 of 37 plants tested. Natural infectivity was demonstrated and six celery plants were also infected after the insects fed on inoculum from 11 to 12 days.
This species is not considered at present to be an important vector of this virus in California.
Medium size, linear species. male 4.30—4.50 mm., female 4.50—4.80 mm.
General colour yellow brown to brown. Crown yellow brown to brown, sometimes with brown markings at apex; pronotum light brown; elytra brown with ivory along commissure, veins yellow brown to ivory.
Pygofer in lateral aspect about 1½ times as long as wide, ventral margin concave at middle, caudoventral margin produced posteriorly to broad convex lobe, dorsal margin with posterior part convex; pygofer spine straight, lanceolate, arising from apex of caudoventral lobe, projecting dorsally; caudodorsal and dorsal submarginal areas of pygofer with many long setae; aedeagus in lateral aspect with bifurcate process about one-half as long as aedeagal shaft, flat and broad at midlength, pointed apically; gonopore at about midlength of aedeagal shaft; style in dorsal aspect about 1½ times as long as connective; stylar shaft long, about three times as long as basal width, with sides parallel, apex truncate or nearly so; stylar spine apical, long, pointed apically, projecting laterally; female seventh sternum in ventral aspect about twice as wide as long, anterolateral margins parallel, posterolateral part curved slightly mesally, posterior margin uniformly convex on each side of median spatulate process; median emargination V-shaped, shallow, less than one-fourth length of segment; spatulate process about 1½ times as long as basal width, produced beyond posterior margin, with sides parallel, apex deeply bifid.
This species is similar in general habitus to
and can be separated by the convex caudal margin of the male pygofer. Further characterization and relationships of the genitalia were presented by Nielson
illustrated the adults in color.
|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.|