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Species Account



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Scaphoideus titanus Ball 1932a: 15

Membracoidea : Cicadellidae
Diseases Transmitted
Grapevine flavescence dorée phytoplasma 16SrV-C Phytoplasma
Grapevine flavescence dorée phytoplasma 16SrV-D Phytoplasma

Distribution Map
(simplified continental distribution)
Geographical Distribution:

Recorded Distribution(s):
It is common in the United States, eastern Canada, and southern Europe. DeLong and Knull in 1946 (190) reported this species from Tennessee, Wisconsin, Louisiana, Ohio, Pennsyl¬vania, Minnesota, Illinois, and South Dakota. In 1956, Beirne (58) exam¬ined material from southern Ontario and southern Quebec. It is not known to occur west of the Rocky Mountains. The species was recently introduced into Europe, where it is now common in southwest France and northern Italy (Bonfils and Schvester 1960 [104]; Vidano 1964 [838]). (Nielson, 1968)

Scaphoideus titanus Ball 1932a: 15
Diseases Transmitted Pathogen Type
Grapevine flavescence dorée phytoplasma 16SrV-C Phytoplasma
Grapevine flavescence dorée phytoplasma 16SrV-D Phytoplasma
Crops Affected by Scaphoideus titanus Ball 1932a: 15
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 “flavescence doree” virus of grapevines in southern France. Transmission of the virus was first reported by Schvester et al. in 1961 (674) and later confirmed by Schvester et al. in 1963 (675, 676). Leafhoppers were collected from vines severely infected with the virus and placed on 89 healthy vines at intervals of 4 weeks over a 2-month period. Three months later 17 plants were infected and showed typical symptoms of the disease; 3 plants had suspicious and 10 doubtful symptoms. None of the 30 check plants were diseased. In 1964 Vidano (838) produced similar symptoms due to feeding by the leafhopper in Italy, where the virus is not known to occur.


(Nielson 1968)

This species is an important vector of this virus in southern France and is potentially important in other grape-growing areas of Europe, where it may spread.
(Nielson 1968)

Identification Plates
Scaphoideus titanus


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Plate 1
Species Description

Length:
Medium size, linear species. Length of male 4.90—5.20 mm., female 5.40—6.10 mm.

Colour:
General color reddish brown, Crown light tan with fine dark line on anterior margin; pronotum and scutellum dark reddish brown; elytra reddish brown with few light ivory irregular spots on commissure.

Genitalia:
Pygofer in lateral aspect about twice as long as wide, caudal margin narrowly convex; aedeagus in lateral aspect very broad basally with short shaft and pair of lateral apical processes near apex; gonopore terminal; style in dorsal aspect with apices long, attenuated, slightly curved laterally, female seventh sternum in ventral aspect with caudal margin broadly convex.

Species Diagnosis

This species is similar to luteolus and can be distinguished by the male pygofer with the caudal margin somewhat narrowly convexed, the aedeagus with the shaft curved laterally at the distal end, and the style with the apex sharply attenuated.

(Nielson 1968)

Ecology

Host Plant Activity Period (Months) Dormancy Generations
- -
Eggs -
Nymphs -
Adult -
One per year -
Continuous -
Variable -
Scaphoideus titanus Ball 1932a: 15

Higher taxonomy

Kingdom Phylum Class Order Superfamily Family
Animalia Arthropoda Insecta Hemiptera
Suborder: Auchenorrhyncha
Infraorder: Cicadamorpha
Membracoidea Cicadellidae
Subfamily: Deltocephalinae
Scaphoideus titanus Ball 1932a: 15
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 - 12/09/2019