Rutherglen bug

Constraint - Rutherglen bug


  • Winged insect, native to Australia

  • Adults are three-four mm long, with mottled grey/brown/black colouring

  • Nymphs are wingless, reddish brown, with a pear shaped body


  • Damage is usually confined to field margins/patches within the crop

  • Adults and nymphs feed on growing tips, buds, flowers, pods, and seeds


  • Seedlings can be killed by sheer feeding pressure, and grain yield reduced

  • RGB can raise the moisture content of the seed to above acceptable standard

  • RGB feeding can also affect oil uqantitiy/quality, seed viability, and seed set


Seed treatment will not protect seedlings against extreme feeding pressure. Control of summer-autumn weeds, ploughing a deep furrow between weeds and the crop, application of inseccticide, and allowing RGB to escape from open bins to reduce numbers in deliveries can all be effective management strategies.

Links and Resources

DAFF QLD - Rutherglen bug

Introduction, scientific name, description, similar species, distribution, crops attacked, lifecycle, damage, monitoring, and control. Last updated 2010.

Insectopedia - Rutherglen bug

Description, biology, damage, monitoring, and sampling. Published 2000.