Osbornellus borealis DeLong & Bohr 1936
Species Description
Length: Medium size, slender species. Length of male 4.40—5.00 mm., female 5.00—5.60 mm.
Colour: General color yellowish brown. Crown and pronotum with yellow and brown markings; elytra subhyaline with veins suffused with yellow brown, few cells ivory.
Genitalia: Pygofer in lateral aspect about as long as wide, caudal margin obliquely convex; aedeagus in lateral aspect with two basal processes extending laterally along shaft and protruding beyond apex of shaft; aedeagal shaft narrow, tubelike, slightly attenuated apically; gonopore subterminal; style in dorsal aspect with apices long, narrow; female seventh sternum in ventral aspect with caudal margin truncate.
Colour: General color yellowish brown. Crown and pronotum with yellow and brown markings; elytra subhyaline with veins suffused with yellow brown, few cells ivory.
Genitalia: Pygofer in lateral aspect about as long as wide, caudal margin obliquely convex; aedeagus in lateral aspect with two basal processes extending laterally along shaft and protruding beyond apex of shaft; aedeagal shaft narrow, tubelike, slightly attenuated apically; gonopore subterminal; style in dorsal aspect with apices long, narrow; female seventh sternum in ventral aspect with caudal margin truncate.
Species Diagnosis
This is the only species in the genus Osbornellus that is a vector of a plant virus (Western X-disease phytoplasma 16SrIII-A, Phytoplasma)
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.
take and image from: http://naturalhistory.museumwales.ac.uk/vectors/browsespecies.php?-recid=576#Tabs
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