General
The adult is 2mm-4mm long with a dark brown, elongated, cylindrical
body. The head has a snout like prolongation with mouthparts at
the tip. The antennae are elbowed with a club. Similar in appearance
to the Lesser and Greater Rice Weavils
but lacks the dull brown spots on the wing covers. The adult is wingless.
The larva is 3mm-4mm long with a white, fleshy, crescent-shaped body
and has no legs.
Significance
Primarily found on wheat and barley, it will also breed on hard cereal
products such as spaghetti, and is an important pest of all kinds
of cereals.
Control
As the development stages occur within the grain, an infestation
may remain undetected until adult emergence. Start with identifying
the source of the infestation and the extent of product contamination.
Infested foodstuffs should be isolated and destroyed, or failing
this fumigated. Treatment of all the fabric of the building should
be carried out using a residual synthetic pyrethroid insecticide,
supplemented with an ultra-low volume insecticide application.
Attention to hygiene is important so as to remove food residues.
Furthermore, as these insects are prolific breeders, a thorough
treatment is essential.
Number of days spent as:
| Egg |
3-21 |
| Larva |
20-143 |
| Pupa |
4-23 |
| Adult |
210-260 |
|
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