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Glossy shield bug

General information

The glossy shield bug is found in cotton mostly in the mid to late season. In early summer, they can be found in lucerne, linseed and any summer crops infested with caterpillars. 

Scientific name

Cermatulus nasalis


Adults are 12 mm long and have shiny brown, shield-shaped bodies. Patterns include darker brown and small yellow markings. Nymphs are dark red and brown with the early instars being bright red. The black eggs, which are laid in 'rafts' of 50 or more, have short, white spines around the rim. The development of the glossy shield bug from egg to adult takes about 3 weeks.

Similar species

Brown shield bug and spined predatory shield bug .

Pests attacked

Moth larvae, including helicoverpa and loopers.

Impact on pest

Adults and older nymphs use piercing/sucking mouthparts to feed on insects.

Further information