Draeculacephala crassicornis Van Duzee 1915b: 181


Published in: Van Duzee, E.P. (1915b) The North American species of Draeculacephala (Homoptera). Entomological News. Published by the American Entomological Society. Philadelphia. 26, 176–181.

Description & Identification

Large, slender species. male 6.50—7.10 mm female 7.50—8.30 mm. (Nielson, 1968)General color green. Crown green with fuscous areas on each side of middle; pronotum light green along anterior margin, dark green apically; elytra dark green with reticulations along apex, veins ivory or yellowish white.(Nielson, 1968)Pygofer in lateral aspect about twice as long as wide, dorsal margin slightly concave, caudal margin narrowly convex; aedeagus in lateral aspect broad, with distinct broad dorsal tooth, shaft very broad, subquadrate in ventral aspect; paraphyses symmetrical with two pairs of processes, terminal pair twice as long as basal pair; style in dorsal aspect with distal half curved laterally and attenuated; female seventh sternum in ventral aspect with caudal margin slightly convex. (Nielson, 1968)This species is similar to noveboracensis in general habitus and can be separated by the aedeagus with the shaft broadly subquadrate in ventral aspect.(Nielson 1968)


Biology & Ecology

The biology is unknown. It has been collected from grass in Washington (Wolfe 1955 [866] and apparently occurs in high mountain regions of the United States and Canada (Ball 1927 [32]; Beirne 1956 [58]). (Nielson, 1968)


Classification

Hemiptera
Auchenorrhyncha
Cicadellidae
Cicadellinae
Cicadellini
Draeculacephala
crassicornis
Van Duzee 1915b: 181

Synonymy

Draeculacephala bivoltina Hamilton, 1985
Draeculacephala borealis Hamilton, 1985
Draeculacephala borealis arctoperata Hamilton, 1985
Draeculacephala borealis orea Hamilton, 1985

Additional Images

Images provided by GBIF data providers. We cannot verify that identifications are correct.


Worldwide Distribution

United States, Canada

North America

Distribution point data provided by GBIF.

Vector Status

Economic Crops

Grape
Other

This species is a vector of Pierce’s disease virus of grape in California. Transmission of the virus by this species was first reported by Freitag et al. in 1952 (287). Leafhoppers fed on diseased plants from 1 to 2 days and on test plants from 2 to 10 days. It was an efficient vector, having infected 56 percent of the test plants. However, in 1954 Freitag and Frazier (286) found that it was not naturally infective after testing 610 specimens from Humboldt and Nevada Counties in California.
(Nielson 1968)

The species is not considered an important vector of Pierce’s disease virus.
(Nielson 1968)

Plant Diseases

Bacteria

Redak et. al., 2004.

The Biology of Xylem Fluid-Feeding Insect Vectors Of Xylella fastidiosa and Their Relation to Disease Epidemiology

Bacteria

Redak et. al., 2004.

The Biology of Xylem Fluid-Feeding Insect Vectors Of Xylella fastidiosa and Their Relation to Disease Epidemiology


GALLERY



TAGS
Cicadellidae Cicadellinae Cicadellini Draeculacephala Grape Membracoidea North America Other Alfalfa dwarf disease (AD) Pierce's disease Xylella fastidiosa
RESOURCES

CITATION
Draeculacephala crassicornis Van Duzee 1915b: 181: Wilson M. R. & Turner J. A. 2021. Insect Vectors of Plant Disease. Amgueddfa Cymru - National Museum Wales. Available online at http://insectvectors.science/vector/1659. [ Accessed:  28/06/2022 ].
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