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Silverleaf Whitefly Bemisia argentifolii Bellows
& Perring -- Hemiptera:
Aleyrodidae [Other Name = Bemisia tabaci
(Gennadius)] |
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The silverleaf whitefly (or sometimes
referred to as Bemisia tabaci
strain B) invaded southern California's desert valleys in 1991. Populations were so large that actual
clouds of adults could be seen at times.
California produces about 90 percent of all the autumn and winter
vegetables that are grown in the United States, but this pest continues to
cause crop losses each year to California's agriculture. Silverleaf whitefly populations are now
established in California's southern deserts, mainly the Imperial, Palo Verde
and Coachella valleys. They also
occur in the southern San Joaquin Valley, where the destruction is most
severe on cotton. Other states where
the insect has been reported are Florida, Texas and Arizona. The
native home of this whitefly is not definitely known, but it is suspected to
be in the region around India. Its
invasion of the southeastern United States occurred about 1986 after which it
spread with the movement of ornamental plants to other parts of the country. This
whitefly has also been reported on over 500 plants worldwide. Its hosts include melons, broccoli,
cabbage, cotton, squash and a many ornamental plants as well as native plant
species. It damages plants by
extracting plant nutrients, and this causes defoliation, stunting and low
yields on crops. A black sooty mold grows
on leaves that are coated with a
honeydew that is produced by the flies. The mold makes cotton processing difficult and vegetables must
be washed, which adds to production cost.
Some plant physiological disorders may be present, including irregular
ripening of tomatoes and a symptom in squash called silverleaf. Some plant viruses are also vectored by
the whiteflies. REFERENCES:
FURTHER
RELATED REFERENCES Bellows, T. S. Jr., T. M. Perring, R. J. Gill &
D. H. Headrick. 1994. Description of a species of Bemisia (Homoptera: Aleyrodidae). Annals of the Entomological Society of
America 87: 195-206. Brown, J. K., D. R. Frohlich & R. C. Rosell. 1995.
The sweetpotato or silverleaf whiteflies: biotypes of Bemisia tabaci or a species
complex? Annual Review of Entomology
40: 511-534. Csizinszky, A. A., D. J.
Schuster & J. B. Kring. 1997. Evaluation of color mulches and oil sprays
for yield and for the control of silverleaf whitefly, Bemisia argentifolii (Bellows and
Perring) on tomatoes. Crop Protection
16: 475- 481. Evans, G. A. & A. B. Hamon. 2002.
Whitefly taxonomic and ecological Web site: an on-line interactive
catalog of the whiteflies (Hemiptera: Aleyrodidae) of the world and their
parasites and predators.
http://www.fsca-dpi.org/homoptera_hemiptera/Whitefly/whitefly_catalog.htm (13
November 2002). Gerling, D. (ed.). 1990. Whiteflies: their Bionomics, Pest Status
and Management. Intercept, Ltd.,
Andover, UK. Gerling, D. & R. T. Mayer (eds.). 1996.
Bemisia: 1995. Taxonomy,
Biology, Damage, Control and Management.
Intercept, Ltd., Andover, U. K. Hamon, A. B. & V. Salguero. 1987.
Bemisia tabaci,
sweetpotato whitefly, in Florida (Homoptera: Aleyrodidae: Aleyrodinae).
Entomology Circular 292, Florida Department of Agriculture and Consumer
Services, Division of Plant Industry. Liu, T-X & P. A. Stansly. 1999. Searching and feeding behavior of Nephaspis oculatus and Delphastus
catalinae (Coleoptera: Coccinellidae), predators of Bemisia argentifolii (Homoptera:
Aleyrodidae). Environmental
Entomology 28: 901-906. Lopez-Avila, A. 1986. Taxonomy and biology. pp. 3-11. In Cock, M.J.W. (ed.), Bemisia tabaci - A Literature Survey on
the Cotton Whitefly with an Annotated Bibliography. CAB International Institute of Biological Control, Ascot, U.K. Maynard, D. N. &
D. J. Cantliffe. 1990. Squash silverleaf and tomato ripening: new
vegetable disorders in Florida.
Vegetable Crops Fact Sheet VC-37, IFAS, University of Florida. McAuslane, H. J, F. A. Johnson, D. L. Colvin & B. Sojack. 1995.
Influence of foliar pubescence on incidence and parasitism of Bemisia argentifolii (Homoptera:
Aleyrodidae) on soybean and peanut.
Environmental Entomology 24:
1135-1143. Nyoike, T. W., O. E. Liburd & S. E. Webb. 2008.
Suppression of whiteflies, Bemisia tabaci (Hemiptera:
Aleyrodidae), and incidence of curcurbit leaf crumple virus, a
whitefly-transmitted virus of zucchini squash new to Florida, with mulches
and imidacloprid. Florida
Entomologist 91: 460-465. Tsai, J. H. & K. Wang. 1996. Development and
reproduction of Bemisia argentifolii
(Homoptera: Aleyrodidae) on five host plants. Environmental Entomology 25:
810-816. Chiappini, E., S. V. Triapitzin & A. Donev. 1996.
Key to the Holarctic species of Anagrus
Haliday (Hymenoptera: Mymaridae) with a review of the Nearctic and
Palaearctic (other than European) species and descriptions of new taxa. Journal of Natural History 30: 551-595. Triapitzin,
S. V. 1995a. The identities of Anagrus (Hymenoptera: Mymaridae) egg
parasitoid of the grape and blackberry leafhoppers (Homoptera: Cicadellidae)
in California. Pan-Pacific Entomol. 71 (4): 250-251. Triapitzin,
S. V. 1995b. A review of the Australian species of Anagrus (Hymenoptera: Mymaridae). Russian Entomological Journal 4
(1-4): 105-108. Triapitzin, S.
V. 1997. The genus Anagrus
(Hymenoptera: Mymaridae) in America south of the United States: a
review. Ceiba (Zamorano,
Honduras) 38 (1): 1-12. Triapitzin,
S. V. 1998. Anagrus
(Hymenoptera: Mymaridae) egg parasitoids of Erythroneura
spp. and other leafhoppers (Homoptera: Cicadellidae) in North American
vineyards and orchards: a taxonomic review.
Transactions of the American Entomological Society. 124 (2): 77-112. Triapitzin, S. V. & D. Strong.
1995. A new Anagrus (Hymenoptera: Mymaridae), an egg
parasitoid of Prokelisia spp. (Homoptera:
Delphacidae). Pan-Pacific Entomol. 71 (4): 199-203. Triapitzin, S. V., R. F. Mizell,
J. L. Bossart & C. E. Carlton.
1998. Egg
parasitoids of Homalodisca coagulata
(Homoptera: Cicadellidae). Florida Entomologist 81
(2): 241-243. Walker, G. P., N. Zareh, I. M. Bayoun & S. V. Triapitzin. 1997.
Introduction of western Asian egg parasitoids into California for
biological control of beet leafhopper, Circulifer
tenellus. Pan-Pacific Entomologist 73 (4): 236-242. |