Print
Species Account


B.M.1988-343; Female; 'Oreg. Medford TouVelle Prk'; Coll.: Oman; Date: v.-18-68
i14867

B.M.1988-343; Female; 'Oreg. Medford TouVelle Prk'; Coll.: Oman; Date: v.-18-68
i14868

B.M.1988-343; Male; 'Oreg. Medford TouVelle Prk'; Coll.: Oman; Date: v.-18-68
i14869

B.M.1988-343; Male; 'Oreg. Medford TouVelle Prk'; Coll.: Oman; Date: v.-18-68
i14870

B.M.1988-343; Female; 'Oreg. Medford TouVelle Prk'; Coll.: Oman; Date: v.-18-68
NMW Image No. i14867

Euscelidius variegatus (Kirschbaum 1858a: 9 )

Membracoidea : Cicadellidae
Diseases Transmitted
Western X-disease phytoplasma 16SrIII-A Phytoplasma

Distribution Map
(simplified continental distribution)
Geographical Distribution:
Europe, North America

Recorded Distribution(s):
It has been recorded from numerous localities in Europe, Asia, northern Africa, and the Western United States. According to Young (1955) , the species was introduced into North America and now occurs in California, Oregon, Utah, and Washington. Ribaut (1952) examined specimens from Europe, France, Siberia, Caucasia, Azores, and northern Africa. Lindberg (1953) recorded it from the Canary Islands and the Mediterranean subregion.

Euscelidius variegatus (Kirschbaum 1858a: 9 )
Diseases Transmitted Pathogen Type
Western X-disease phytoplasma 16SrIII-A Phytoplasma
Crops Affected by Euscelidius variegatus (Kirschbaum 1858a: 9 )
Rice Citrus Carrot
Barley Apple Tomato
Maize (Corn) Pear Potato
Sugarcane Elm Strawberry
Wheat Palms Rubus
Sorghum Grapevine Papaya
Other (grasses/cereals) Ornamentals Peach

This species is a vector of the western strain of North American aster yellows virus. In 1947, Severin (701) was first to report transmission by this species under the name “Euscelis maculipennis DeLong and Davidson.” A high percentage of transmission from diseased celery to healthy celery was effected. About 78 percent of males and 76 percent of females transmitted the virus. No transmissions were effected from diseased celery to healthy aster. Males retained the virus from 2 to 59 days and females from 3 to 13 days. The species failed to transmit curly top virus of sugarbeets and Pierce’s disease virus of grape.
(Nielson 1968)

This species is not considered an important vector in the natural spread of this virus. It should be investigated as a possible vector of European aster yellows.
(Nielson 1968)

Identification Plates
Euscelidius variegatus


Under Development


Under Development


Under Development


Under Development


Under Development


Under Development


Under Development


Under Development


Under Development

Plate 1
Species Description

Length:
Medium size, robust species. male 3.90—4.50 mm., female 4.10—5.50 mm.

Colour:
General colour light brown to black with numerous fuscous markings on body. Crown tan with black markings; pronotum tan with numerous somewhat transverse black markings; scutellum with black markings; elytra with numerous black spots bordering cells, veins whitish tan.

Genitalia:
Pygofer in lateral aspect nearly twice as long as wide, caudoventral margin produced posteriorly to long, curved, fingerlike lobe; aedeagus in lateral aspect curved, narrow, tubelike, slightly attenuated apically with tiny hooked process at apex, process bifurcate; gonopore subterminal; style in dorsal aspect simple, apex narrowed, small spines on lateral margin of apices; female seventh sternum in ventral aspect with caudal margin concave at middle, small spatulate process arising from base of concavity.
.

Species Diagnosis

This is the only species in the genus Euscelidius that is a vector.

(Nielson 1968)

Ecology

Host Plant Activity Period (Months) Dormancy Generations
- -
Eggs -
Nymphs -
Adult -
One per year -
Continuous -
Variable -
Euscelidius variegatus (Kirschbaum 1858a: 9 )

Higher taxonomy

Kingdom Phylum Class Order Superfamily Family
Animalia Arthropoda Insecta Hemiptera
Suborder: Auchenorrhyncha
Infraorder: Cicadamorpha
Membracoidea Cicadellidae
Subfamily: Deltocephalinae
Euscelidius variegatus (Kirschbaum 1858a: 9 )
References
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.
Record last updated - 22/10/2010