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Species Account


B.M.1961-724; Male; 'Australia, N.S.W: Narrabi'; Coll.: N. I. Nikitin; Date: 28.xii.1959
i14711

B.M.1984-1; Female; 'Australia, Katherine N.T, on lucerne'; Coll.: c.wilson; Date: 8.ix.1983
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B.M.1984-1; Female; 'Australia, Katherine N.T, on lucerne'; Coll.: c.wilson; Date: 8.ix.1983
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B.M.1961-724; Male; 'Australia, N.S.W: Narrabi'; Coll.: N. I. Nikitin; Date: 28.xii.1959
NMW Image No. i14711

Austroagallia torrida (Evans)

Membracoidea : Cicadellidae
Diseases Transmitted

Distribution Map
(simplified continental distribution)
Geographical Distribution:
Australasia & Oceania

Recorded Distribution(s):
This species is known only from Australia. Evans considered it as an introduction from the Mediterranean region. In 1954 Grylls (325) reported it from the major States of Australia except Victoria. (Nielson, 1968)

Austroagallia torrida (Evans)
Diseases Transmitted Pathogen Type
Crops Affected by Austroagallia torrida (Evans)
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 rugose leaf curl virus of clover in Australia. Transmission of this virus was first reported in 1954 by Grylls (325), who demonstrated transmission to a number of plants including lucerne, clover, tomato, and carrots. The vector required over 30 minutes of feeding on diseased plants before transmission was accomplished. Transovarial passage of the virus was also established. In 1955, Grylls (326) reported an outbreak of this disease, in which 10 to 12 percent of red clover and some white clover plants were infected in one pasture, whereas in another field the disease was much more severe. Populations of torrida were found in the diseased fields.
(Nielson 1968)

This species is an important vector in the natural spread of rugose leaf curl virus in Australia.
(Nielson 1968)

Identification Plates


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Species Description

Length:
Small linear species. male 3.40—3.50 mm., female 3.50—3.90 mm.

Colour:
General colour light brown. Vertex with two distinct black spots; pronotum with four black spots, two smaller ones near anterior margin and two larger ones near posterior margin, distance between posterior spots greater than distance between anterior spots; elytra uniformly light brown.

Genitalia:
Pygofer in lateral aspect about as long as wide, caudodorsal margin produced posteriorly to short angulate lobe; 10th segment with pair of small plates, each plate with elongate curved process distally; aedeagus in lateral aspect broad basally, narrowed and somewhat attenuated apically, shaft short with single distinct, broad spine arising laterally from middle of dorsal margin of shaft; gonopore terminal; style in dorsal aspect with apex bilobed, lobes about equal in length, curved; female 7th sternum in ventral aspect with caudal margin truncate.

Species Diagnosis

This is the only species in the genus Austroagallia that is a vector

(Nielson 1968)

Ecology

Host Plant Activity Period (Months) Dormancy Generations
- -
Eggs -
Nymphs -
Adult -
One per year -
Continuous -
Variable -
Austroagallia torrida (Evans)

Higher taxonomy

Kingdom Phylum Class Order Superfamily Family
Animalia Arthropoda Insecta Hemiptera
Suborder: Auchenorrhyncha
Infraorder: Cicadamorpha
Membracoidea Cicadellidae
Subfamily: Agallinae
Austroagallia torrida (Evans)
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