Journal of the Australian Entomological Society (1992) 31, 345-349

P.J. De Barro (1992)
A survey of Rhopalosiphum padi (L.) (Hemiptera: Aphididae) and other wheat-infesting cereal aphids flying over South Australia in 1989
Journal of the Australian Entomological Society 31 (4), 345-349
Abstract: In 21 trap locations across South Australia Rhopalosiphum padi was the most commonly trapped species of cereal aphid. Metopolophium dirhodum (Walker) and Sitobion nr fragariae were rarely trapped at any of the locations other than the Waite Institute. The trap catches of R. padi peaked twice. The first, an autumn peak, began in late April and continued through until the end of May, coinciding with the production of alatoid nymphs in perennial grass pastures. The second, winter peak commenced in July and continued through to the end of sampling, coinciding with alatoid nymph production in annual volunteer grasses and wheat crops. M. dirhodum and S. nr fragariae had only one peak which occurred in winter-spring.
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Database assignments for author(s): Paul J. De Barro

Research topic(s) for pests/diseases/weeds:
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Rhopalosiphum padi		Australia (South+SE)
	Metopolophium dirhodum		Australia (South+SE)