Insects of Southern Australian Broadacre Farming Systems - Grains ...
Insects of Southern Australian Broadacre Farming Systems - Grains ...
Insects of Southern Australian Broadacre Farming Systems - Grains ...
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Hemiptera: Scutelleridae<br />
Sunn pest (Eurygaster integriceps)<br />
BIOSECURITY THREAT<br />
NOT PRESENT IN AUSTRALIA<br />
Distinguishing characteristics/description<br />
adult<br />
10 mm<br />
20<br />
30 40 50<br />
Adult<br />
Colour varies from<br />
greyish-brown to<br />
reddish-brown<br />
Wide oval-shaped<br />
body with a wide<br />
triangular head<br />
Wings completely covered by a<br />
hardened shield (scutellum)<br />
with a rounded bottom edge<br />
Eggs<br />
Piercing<br />
and sucking<br />
mouthpart<br />
Nymphs<br />
Confused with/similar to<br />
Rounder in shape<br />
than adults, five<br />
nymphal stages<br />
The Sunn pest can be confused with other true bugs such<br />
as stink bugs (Pentatomidae), seed bugs (Lygaeidae) and<br />
other shield bugs such as the predatory glossy shield<br />
bug (Cermatulus sp.). A distinctive character <strong>of</strong> the Sunn<br />
pest is the wing covering (scutellum) which completely<br />
hides the wings. This feature is not seen in the other two<br />
bug families nor in predatory shield bugs.<br />
Spherical (about 1 mm in diameter).<br />
Shiny light green in colour,<br />
laid in two even rows (raft)<br />
Distribution and potential spread<br />
The Sunn pest is widespread in Bulgaria, Greece,<br />
Romania, <strong>Southern</strong> Russia, Iran and Israel. It is also<br />
present in other European and Asian countries.<br />
Adults have functional wings and can actively disperse<br />
and migrate long distances (>250 km).<br />
The Sunn pest has one generation per year and<br />
individuals can survive for up to one year depending on<br />
temperature and fat reserves.<br />
The egg and diapause stages can survive without host<br />
plants for long periods in cracks in the soil and therefore<br />
can be spread through soil contamination in machinery<br />
and equipment.<br />
SECTION 4 COMMON Pest, Beneficial AND EXOTIC Species<br />
45<br />
<strong>Insects</strong> <strong>of</strong> <strong>Southern</strong> <strong>Australian</strong> <strong>Broadacre</strong> <strong>Farming</strong> <strong>Systems</strong> Identification Manual and Education Resource © 2012
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