Colladonus clitellarius (Say 1830b: 309 )Membracoidea : Cicadellidae
|Diseases Transmitted||Pathogen Type|
|Eastern X-disease 16SrIII-A||Phytoplasma|
|Crops Affected by Colladonus clitellarius (Say 1830b: 309 )|
This species is a vector of eastern X-disease virus of peach. First reports of transmission were published by Thornberry in 1954 (786) and confirmed by Gilmer that same year (314). The former investigator obtained one highly suspicious case in peach that resulted from a transfer of insects from vegetation surrounding diseased chokecherry to peach. The suspected vector was listed as “Collandonus [sic] clitellarius.”In 1954, Gilmer (314) obtained positive transmission to three chokecherry seedlings after the leafhoppers fed for 11 days on diseased chokecherry seedlings and 35 days on test plants.
This species is considered an important vector of eastern X-disease virus of peach in New York and Illinois.
Medium size, linear species. Length of male 5.19 mm., female 5.70 mm.
General color brown to black with distinct yellow or ivory markings on body. Crown ivory with two small black spots on anterior margin; pronotum with distinct yellow or ivory transverse band; forewings black to brown with distinct yellow suboval spot on clavus.
Pygofer in lateral aspect about twice as long as wide, ventral margin obtusely concave about middle, broadly convex at posterior part, caudal margin obtusely convex, dorsal margin with distal part slightly convex; pygofer spine well developed, long, lanceolate, straight, arising caudoventrally, projecting posterodorsally from caudal margin of pygofer; caudoventral marginal area with many minute setae; caudodorsal and dorsal submarginal areas with many long setae; aedeagus in lateral aspect with bifurcate processes short, less than one-half as long as aedeagal shaft, flat and broad at midlength, pointed apically, crossing in dorsal aspect; gonopore of aedeagus at midlength of shaft; style in dorsal aspect about twice as long as connective; stylar shaft about four times as long as basal width, produced posteriorly, with sides parallel, apex convex; stylar spine subapical, long, pointed apically, projecting laterally; female seventh sternum in ventral aspect twice as wide as long, lateral margins parallel, posterior margin obtusely concave on either side of median spatulate process; median emargination U-shaped, deep, about one-half length of segment; spatulate process long, about three times as long as basal width, produced beyond posterior margin, with side parallel, apex acutely bifid.
This species is similar in general habitus to
and can be easily distinguished by the large yellow subquadrate spot on the clavus and style with a subapical lateral projection.
|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.|