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Species Account


NMW; Male; 'Jogya, Java; Indonesia'; Coll.: wilson; Date: 14.iii.81
i14301

NMW; Male; 'Jogya, Java; Indonesia'; Coll.: wilson; Date: 14.iii.81
i14302

NMW; Female; 'Jogya, Java; Indonesia'; Coll.: wilson; Date: 14.iii.81
i14303

NMW; Male; 'Jogya, Java; Indonesia'; Coll.: wilson; Date: 14.iii.81
NMW Image No. i14301

Nephotettix virescens (Distant 1908g: 291 )

Membracoidea : Cicadellidae
Diseases Transmitted
Rice tungro bacilliform virus Tungrovirus Virus
Rice yellow dwarf 16SrXI-A Phytoplasma

Described as Selenocephalus virescens Distant. It has also been known as Nephotettix bipunctata (Fabricius), Nephotettix impicticeps Ishihara, Nephotettix oryzii Mahmood and Aziz, and Phrynomorphus olivascens
(Wilson & Claridge 1991)

Distribution Map
(simplified continental distribution)
Geographical Distribution:
Asia

Recorded Distribution(s):
Widely distributed in Asia. Known from Malaysia, Indonesia, Burma, South Vietnam, Thailand, India, Pakistan, Sri Lanka, China, Hong Kong, Philippines and Laos (Ghauri, 1971). Also found in the southern part of Japan.

This species is known from Japan, Ryukyu Is¬lands, Formosa, India, and the Philippines (Ishihara 1964 [390]). (Nielson,1968)

Nephotettix virescens (Distant 1908g: 291 )
Diseases Transmitted Pathogen Type
Rice tungro bacilliform virus Tungrovirus Virus
Rice yellow dwarf 16SrXI-A Phytoplasma
Crops Affected by Nephotettix virescens (Distant 1908g: 291 )
Rice Citrus Carrot
Barley Apple Tomato
Maize (Corn) Pear Potato
Sugarcane Elm Strawberry
Wheat Palms Rubus
Sorghum Grapevine Papaya
Other (grasses/cereals) Ornamentals Peach

Appears to be completely restricted to rice. Inoue (1986) tested nymphal survival on 15 grass species (13 genera) and no adults emerged except from those nymphs reared on rice. Very important vector of tungro disease in tropical Asia.
(Wilson & Claridge 1991)

This species is a vector of the rice yellow dwarf virus in Japan and rice tungro disease in the Philippines. Nasu (558) first reported this species as a vector in 1963 under the name of “Nephotettix sp. (B) .“ It is not a vector of rice stunt virus.
In 1965, Rivera and Ou (646) transmitted a new virus of rice in the Philippines, which was considered distinct from all other viruses attacking rice. The new virus was called “tungro” disease and was transmitted after a 30-minute acquisition feeding period and a 24-hour latent period. As high as 83 percent of the test insects became infective and transmitted the virus to 61 percent of the test plants. The virus appeared to be retained for life, but there was no indication of transovarial passage through the egg of the vector.


(Nielson 1968)

The importance of this species in the natural spread of rice yellow dwarf virus in Japan is considered incidental. Tungro disease of rice is considered important in the Philippines.
(Nielson 1968)

Identification Plates
Nephotettix virescens
Nephotettix virescens
Nephotettix virescens
Nephotettix virescens


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Species Description

Length:
Medium size, slightly robust species. Length of male 4.30—4.50 mm., female 4.90—5.50 mm.

Colour:
General color light yellowish green to green. Crown and pronotum light yellowish green, immaculate; elytra green with small brown or black spot at middle, brown or black band on apex in male, female unmarked. Vertex usually unmarked with distinct furrow, and longer in middle than next to eye, appearing quite pointed in most specimens. Head, pronotum and scutellum usually green but some males have black markings adjacent to ocelli. Forewing with distinct spot that does not touch claval suture but this spot may be absent or only partially represented. Apical third of tegmen black in males; females with unmarked head, pronotum and clavus.

Genitalia:
Male genitalia: Subgenital plate off- white or partly black. Corners of male pygofer rounded , with 1 long and 4 smaller spines. Pygofer in lateral aspect about twice as long as wide, ventral margin with small tooth at about middle, caudal margin convex; aedeagus in lateral aspect nearly tubelike, dorsal surface with three or four narrow toothlike projections, each side of lateral margin with distinct rounded lobe in ventral aspect; style in dorsal aspect with long narrow subtruncate apices; female seventh sternum in ventral aspect with caudal margin nearly truncate, slight indentation medially (fig. 93).Aedeagus with 3-5 pairs of spines located in the middle of the shaft.

Species Diagnosis

N. virescens is usually one of the easiest Nephotettix species to identify, with its unmarked vertex and distinctly pointed head. Occasionally males are found with a partial submarginal band present on the vertex. These may be distinguished by the genitalia; in particular the number of spines on the aedeagus, which is far less than in N. nigropictus.

(Wilson & Claridge 1991)

Ecology

Host Plant Activity Period (Months) Dormancy Generations
- -
Eggs -
Nymphs -
Adult -
One per year -
Continuous -
Variable -
Nephotettix virescens (Distant 1908g: 291 )

Higher taxonomy

Kingdom Phylum Class Order Superfamily Family
Animalia Arthropoda Insecta Hemiptera
Suborder: Auchenorrhyncha
Infraorder: Cicadamorpha
Membracoidea Cicadellidae
Subfamily: Deltocephalinae
Nephotettix virescens (Distant 1908g: 291 )
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.
Wilson, M.R. & Claridge, M.F. 1991. Handbook for the identification of leafhoppers and planthoppers of rice. CABI, Wallingford.
Record last updated - 25/09/2019