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The incidence and distribution of the armyworms Mythimna convecta (walker) and Persectania spp. (Lepidoptera: Noctuidae) and their parasitoids in major agricultural districts of Victoria, south-eastern australia

Published online by Cambridge University Press:  10 July 2009

G. McDonald  and
A. M. Smith
G. McDonald
Affiliation:
Plant Research Institute, Department of Agriculture and Rural Affairs, Swan St., Burnley 3121, Victoria, Australia
A. M. Smith
Affiliation:
Plant Research Institute, Department of Agriculture and Rural Affairs, Swan St., Burnley 3121, Victoria, Australia
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Abstract

Field studies of Mythimna convecta (Walker), Persectania ewingii (Westwood) and P. dyscrita Common, and their associated parasitoids, were conducted in cereals and pastures in Victoria, Australia, in 1980–83. The study included a survey of the armyworm fauna in the major agricultural districts, detailed phenological studies within five oat crops, and ultraviolet-light trapping of adults. M. convecta was the most abundant species in cereals and was found more commonly in the warmer months of spring and summer in all districts. Larval development in oat crops during spring was preceded by little moth activity in light traps. P. ewingii was common in the southern districts and in the cooler months from May to September. It was the most prevalent armyworm species in pastures and rarely occurred in barley. P. dyscrita was the least abundant species and occurred mostly in the drier inland areas, particularly in the west. Light-trap catches of P. ewingii and P. dyscrita suggested there were two generations, one in spring and one in the autumn. Regular sampling in oat crops showed that M. convecta developed faster and was usually more abundant than P. ewingii during seed development and ripening, and hence had the potential to inflict more crop damage. Of the 17 species of parasitoids reared from field-collected larvae, the wasp Campoletis sp. was the most abundant. In 1980–82, average parasitism ranged from 13 to 16% but fell to 2% after the drought of 1982.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 76 , Issue 2 , June 1986 , pp. 199 - 210
Copyright
Copyright © Cambridge University Press 1986

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References

Briton, R. (1979). Barley grub.—3 pp. Adelaide, Dep. Agric. S. Aust. (Fact sheet no. 23/79).Google Scholar
Broadley, R. H. (1979). Armyworms in south Queensland field crops.—Qd agric. J. 105, 433–443.Google Scholar
Bureau of Meteorology (1975). Climatic averages Australia (Metric edition).—491 pp. Canberra, Aust. Govt PubI. Ser.Google Scholar
Cantrell, B. K. (1980). Further studies on the immature stages of the common species of armyworms, cutworms and budworms found in Queensland.—Queensl. J. Agric. & Animal Sci. 37, 167–175.Google Scholar
Common, I. F. B. (1954). The Australian armyworms of the genus Persectania (Lepidoptera: Noctuidae).—Aust. J. Zool. 2, 86–99.CrossRefGoogle Scholar
Common, I. F. B. (1965). The identity and distribution of species of Pseudaletia (Lepidoptera: Noctuidae) in Australia.—J. entomol. Soc. Queensl. 4, 14–17.Google Scholar
Franzmann, B. A. (1973). Food consumption of larvae of the common armyworm (Pseudaletia convecta (Walk.)).—Queensl. J. Agric. & Animal Sci. 30, 157–159.Google Scholar
Froggatt, W. W. (1907). A fight with climbing cutworms (Leucania unipuncta) at Tamworth.—Agric. Gaz. N.S.W. 18, 265–268.Google Scholar
Goodyer, G. (1978). The identification of armyworm, cutworm, budworm and looper caterpillar pests.—12 pp. Sydney, Dep. Agric. N.S.W. (AG bulletin 2).Google Scholar
Goodyer, G. J. (1982). Laboratory assessment of insecticides against the common armyworm. Mythimna convecta (Walker), and southern armyworm, Persectania ewingii (Westwood) (Lepidoptera: Noctuidae).—Gen. appl. Ent. 14, 33–34.Google Scholar
Greenup, L. R. (1970). Ecological studies on the common armyworm Pseudaletia convecta Walk.—258 pp. M.Sc. thesis, Univ. New South Wales.Google Scholar
Griffith, I. P. & Smith, A. M. (1977). A convenient method for rearing lepidopteran larvae in isolation.—J. Aust. entomol. Soc. 16, 366.CrossRefGoogle Scholar
Helm, K. F. (1975). Migration of the armyworm Persectania ewingii moths in spring and the origin of outbreaks.—J. Aust. entomol. Soc. 14, 229–236.CrossRefGoogle Scholar
Hopkins, D. C. & Caon, G. (1984). Identification of armyworm larvae using electrophoretic techniques.—pp. 422–427 in Bailey, P. & Swincer, D. (Eds.). Proceedings of the Fourth Australian Applied Entomological Research Conference, Adelaide 24–28 September 1984. Pest control: recent advances and future prospects.—520 pp. Adelaide, S. Aust. Govt Printer.Google Scholar
Marcovitch, S. (1957). Forecasting armyworm outbreaks—a possibility.—J. econ. Ent. 50, 112–113.Google Scholar
Michael, P. J., Woods, W., Lawrence, P. J. & Fisher, W. (1984). Introduced parasites for the control of Australian noctuid pests.—pp. 294–303 in Bailey, P. & Swincer, D. (Eds.). Proceedings of the Fourth Australian Applied Entomological Research Conference, Adelaide 24–28 September 1984. Pest control: recent advances and future prospects.—520 pp. Adelaide, S. Aust. Govt Printer.Google Scholar
Miller, L. W., Kjar, N. A. M. & Martyn, E. J. (1951). The armyworm in Tasmania. Preliminary report of outbreak in 1950–51.—Tasm. J. Agric. 22, 251–257.Google Scholar
Newman, L. J. (1927). Army worms, cut worms and web worms.—J. Agric. West. Aust. 4, 227–239.Google Scholar
Rimes, G. D. (1976). Armyworm control in coarse grain crops.—J. Agric. West. Aust. 17, 113–116.Google Scholar
Smith, J. S. Jr, Stanley, J. M., Hartsock, J. G. & Campbell, L. E. (1974). Black-light insect survey trap. Plans and specifications.—9 pp. New Orleans, Southern Region, ARS, USDA.Google Scholar
Smith, A. M. (1984). Larval instar determination and temperature-development studies of immature stages of the common armyworm, Mythimna convecta (Walker) (Lepidoptera: Noctuidae).—J. Aust. entomol. Soc. 23, 91–97.CrossRefGoogle Scholar
Strickland, G. R. & Rimes, G. D. (1976). New control for Esperance armyworms.—J, Agric. West. Aust. 17, 14–15.Google Scholar
Van Driesche, R. G. (1983). Meaning of “percent parasitism” in studies of insect parasitoids.—Environ. Entomol. 12, 1611–1622.CrossRefGoogle Scholar
Woods, W., Lawrence, P. J. & Booth, P. (1980). Armyworm—a damaging pest of coarse grains on the south coast.—J. Agric. West. Aust. 21, 23–25.Google Scholar