Grains Research and Development

West (125 results)

  • Armyworms

    Leucania convecta, Leucania stenographa, Persectania ewingii and Persectania dyscrita

    Region
    West
    Larvae grow to 40 mm long and have stripes running along the body but it is difficult to distinguish between larvae of the above species. Colours of the stripes and body can vary. Body colour is usually pinkish, brown or green....
  • African Black Beetle

    Heteronychus arator

    Region
    West
    Larvae are white and 'C' shaped up to 25 mm long with a brown head and three pairs of legs. Adults are shiny, black and cylindrical, and are up to 12 mm long....
  • Bluegreen Aphid

    Acyrthosiphon kondoi

    Region
    West, National, North, South
    Adults are 3 mm long, vary from grey-green to blue-green and may have wings. They are normally found on the upper part of the plant, particularly growing points. Nymphs are similar but smaller in size....
  • Bluegreen Aphid

    Acyrthosiphon kondoi

    Region
    South, National, North, West
    Adults are 3 mm long, may have wings, vary from grey- green to blue-green and have two long siphuncles that extend beyond the base of the abdomen. They are normally found on the upper part of the plant, particularly on growing points. Nymphs are similar but smaller in size.[test]...
  • Bluegreen Aphid

    Acyrthosiphon kondoi

    Region
    North, National, South, West
    Adults are 3mm long, vary from grey-green to blue-green and may have wings. Adults have siphunculi (tube-like projections on either side at the rear of the body) that extend past the body. They are normally found on the upper part of the plant, particularly growing points. Nymphs are similar but...
  • Booklice

    Liposcelis spp.

    Region
    West
    Tiny, pale to dark brown, soft-bodied, up to about 2 mm long with protruding eyes and long thread-like antennae. Developmental period from egg to adult roughly takes up to 3 weeks under the optimal conditions of 30°C and 70 per cent humidity. There are six nymphal stages and they are...