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Species Account


USNM; Female; 'Suitland Bog Md'; Coll.: E A Chapin; Date: ix-23-39
i14234

USNM; Female; 'Suitland Bog Md'; Coll.: E A Chapin; Date: ix-23-39
i14235

USNM; Male; 'Suitland Bog Md'; Coll.: E A Chapin; Date: ix-23-39
i14236

USNM; Female; 'Suitland Bog Md'; Coll.: E A Chapin; Date: ix-23-39
NMW Image No. i14234

Scaphytopius magdalensis (Provancher 1889a: 275 )

Membracoidea : Cicadellidae
Diseases Transmitted
Blueberry stunt phytoplasma 16SrI-E (BBS3) Phytoplasma

Distribution Map
(simplified continental distribution)
Geographical Distribution:

Recorded Distribution(s):
This species is widespread in eastern Canada and occurs from the Midwestern United States to the Atlantic Coast States, but it is most prevalent in the Northeastern United States. Tomlinson et al. (790) reported it as most common in the northern areas of the Eastern United States and Canada. Hutchinson (881) reported it from northern New Jersey, New Eng¬land, Pennsylvania, West Virginia, and Maryland. It was rare in Michigan and absent in Washington. His surveys indicated that the species was predominant in the Northeastern United States whereas verecundus, a species reported earlier as a vector and confused with magdalensis, was predominant in the Southeastern United States. (Nielson, 1968)

Scaphytopius magdalensis (Provancher 1889a: 275 )
Diseases Transmitted Pathogen Type
Blueberry stunt phytoplasma 16SrI-E (BBS3) Phytoplasma
Crops Affected by Scaphytopius magdalensis (Provancher 1889a: 275 )
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 blueberry stunt virus in the Northeastern United States. The first report of its transmission by a leafhopper was made by Tomlinson et al. (790) in 1950. Two species, Scaphytopius magdalensis and S. verecundus, were both reported as vectors, but later workers (Hutchinson 1955 [381]; Maramorosch in 1955 [478]) proved that magdalensis was the only vector. In the earlier tests by Tomlinson et al. in 1950 (790), three of four test plants developed the disease after a mixed population of both species were prefed on inoculum and transferred to healthy plants. The test was repeated using mixed colonies, and 14 of 143 test plants developed the disease. There was no information on the latent period of the virus or other details involving virus-vector relationships.
Hutchinson in 1955
(381) and Maramorosch also in 1955 (478) confirmed transmission by magdalensis. The former investigator obtained transmission with a single male of magdalensis whereas in 40 tests over a 3-year period with verecundus, no transmissions were effected. The latter worker conducted similar experiments and obtained the same results.

(Nielson 1968)

This species is considered an important vector in the natural spread of blueberry stunt virus. There is an obvious need for further study to determine the virus-vector relationship of this virus and to ascertain the relationship with other viruses transmitted by other species of Scaphytopius.
(Nielson 1968)

Identification Plates
Scaphytopius magdalensis


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Plate 1
Species Description

Length:
Small, linear species. Length of male 3.80—4.30 mm., female 4.20—4.30 mm.

Colour:
General color dark brown. Crown with brown longitudinal striations; pronotum with brown reticulations; elytra with dark-brown reticulations and few ivory spots.

Genitalia:
Pygofer in lateral aspect about twice as long as wide, caudal margin somewhat truncate; aedeagus in lateral aspect simple, tubelike, slightly constricted about middle in ventral aspect; gonopore terminal; aedeagal paraphyses broad apically with median tooth on lateral margin, crossing over once; style in dorsal aspect simple, apices narrowed; female seventh sternum in ventral aspect with caudal margin narrowly convex.

Species Diagnosis

From acutus, to which it is similar, magdalensis can be separated by the short lateral process near the middle of each aedeagal paraphysis.

(Nielson 1968)

Ecology

Host Plant Activity Period (Months) Dormancy Generations
- -
Eggs -
Nymphs -
Adult -
One per year -
Continuous -
Variable -
Scaphytopius magdalensis (Provancher 1889a: 275 )

Higher taxonomy

Kingdom Phylum Class Order Superfamily Family
Animalia Arthropoda Insecta Hemiptera
Suborder: Auchenorrhyncha
Infraorder: Cicadamorpha
Membracoidea Cicadellidae
Subfamily: Deltocephalinae
Scaphytopius magdalensis (Provancher 1889a: 275 )
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