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Species Account


NMW; Male; Det. Kwon; 'Austria: Ossiach.'; Coll.: V. F. Eastop; Date: viii.1966
i14719

B.M.1967-534; Female; Det. W. J. Knight; 'England:Westmorland, Grasmeren, Loughrigg Tarn.'; Coll.: knight; Date: ix.65
i14720

B.M.1967-534; Female; Det. W. J. Knight; 'England:Westmorland, Grasmeren, Loughrigg Tarn.'; Coll.: knight; Date: ix.65
i14721

NMW; Male; Det. Kwon; 'Austria: Ossiach.'; Coll.: V. F. Eastop; Date: viii.1966
NMW Image No. i14719

Macrosteles laevis (Ribaut 1927a: 162 )

Membracoidea : Cicadellidae
Diseases Transmitted
Clover dwarf 16SrIII-B Phytoplasma

Described as Cicadula laevis Ribaut.
(Wilson & Claridge 1991)

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

Recorded Distribution(s):
Holarctic. (Wilson & Claridge, 1991)

It is prevalent in Europe and Asia, but rare in North America. In 1952, Ribaut (643) recorded it from numerous coun¬tries in Europe, and Zachvatkin (885) found it in Russia. The only North American record was Alaska, reported by Beirne in 1952 (54).(Nielson, 1968)

Macrosteles laevis (Ribaut 1927a: 162 )
Diseases Transmitted Pathogen Type
Clover dwarf 16SrIII-B Phytoplasma
Crops Affected by Macrosteles laevis (Ribaut 1927a: 162 )
Rice Citrus Carrot
Barley Apple Tomato
Maize (Corn) Pear Potato
Sugarcane Elm Strawberry
Wheat Palms Rubus
Sorghum Grapevine Papaya
Other (grasses/cereals) Ornamentals Peach

Recorded on a variety of grass species, including rice in Iran.
(Wilson & Claridge 1991)

This species is a vector of the European aster yellows, stolbur, and clover stunt viruses in Czechoslovakia. Evidence of transmission of aster yellows virus was first reported by Heinze and Kunze in 1955 (346). Field-collected specimens were allowed to feed on diseased plants for 8 days in some experiments and 2 to 3 weeks in others. Transmission was effected on three aster plants and three periwinkle plants after the leafhoppers fed from 7 to 15 days on a first series of plants and the remaining live insects transferred to feed on a second series for? to 15 days.
Novak
(571) reported transmission of this virus to onion. Transmission of stolbur virus was first reported by Valenta in 1958 (809) and Musil and Valenta in 1958 (553), and confirmed by Valenta et al. in 1961 (810). These workers transmitted the stolbur virus from infected clover to healthy clover. In 1958, Valenta (809) demonstrated transmission of clover stunt virus disease. In 1958, Maramorosch (482) was unable to transmit the American strains of eastern and western aster yellows virus with this species and thus proved that the European virus was different from the American type of aster yellows virus.


(Nielson 1968)

This species is considered one of the important vectors of these viruses in Europe.


(Nielson 1968)

Identification Plates
Macrosteles laevis
Macrosteles laevis


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Plate 1Plate 2
Species Description

Length:
Small, linear species. Length of male 3.20—3.40 mm., female 3.40—3.70 mm.

Abdomen:
Male abdomen: 2nd acrotergite with trunk widely V-shaped, broad triangularly produced ventrally; anterior processes shorter than 1/4 of trunk width; neck short, about 1/4 of trunk width. 2nd tergal apodeme with posterior lobes apparently exceeding beyond posterior margin of tergite. 1st sternal apodeme with posterior lobes usually as long as wide, or slightly variable. 2nd sternal apodeme with posterior lobes slightly exceeding twice as long as basal width.

Colour:
General color light yellow. Crown yellow with two large black spots on anterior margin and two smaller spots on disk; pronotum and scutellum yellow; elytra translucent, veins yellow.

Genitalia:
Pygofer in lateral aspect slightly longer than wide, caudoventral margin produced posteriorly to broad convex lobe, ventral margin with very small fingerlike projection; aedeagus in lateral aspect narrow, tubelike, with pair of curved terminal processes nearly as long as aedeagal shaft; gonopore terminal; style in dorsal aspect simple, apex narrowed; female seventh sternum in ventral aspect with caudal margin sinuate (fig. 58).

es gently curved anteriorly, long, about 2/3 of shaft length.

Species Diagnosis

General coloration yellow to yellowish green. Median spots on vertex sometimes absent.
Male genitalia (Figs 3.343, 3.344): Aedeagal shaft smooth cylindrical, curved distally in lateral aspect, apical processes about 2/3 length of shaft, gently curved anteriorly. Sternal apodemes Figs 3.341, 3.342.

(Wilson & Claridge 1991)

This species is similar to fascifrons in general habitus and male genital characteristics, but can be distinguished by the long, curved aedeagal processes, which are nearly as long as the aedeagal shaft.
(Nielson 1968)

Ecology

Host Plant Activity Period (Months) Dormancy Generations
- -
Eggs -
Nymphs -
Adult -
One per year -
Continuous -
Variable -
Macrosteles laevis (Ribaut 1927a: 162 )

Higher taxonomy

Kingdom Phylum Class Order Superfamily Family
Animalia Arthropoda Insecta Hemiptera
Suborder: Auchenorrhyncha
Infraorder: Cicadamorpha
Membracoidea Cicadellidae
Subfamily: Deltocephalinae
Macrosteles laevis (Ribaut 1927a: 162 )
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 - 25/09/2019