Coleoptera
(Beetles)
Larvae are up to 20 mm in length and have a shiny pale yellow color. Adults are flattened, elongate, brown or black beetles and 7-8 mm in length.
Callosobruchus chinensis – Chinese bruchid
The Chinese bruchid is a major pest of stored legumes. Symptoms for early stages of infestation are the presence of eggs on pods. Adults are 2-4 mm long, the elytra are pale brown with dark marks.
Callosobruchus maculatus – Cowpea weevil
Larvae of the Cowpea weevil infest seeds of legumes during fruiting stage and postharvest. Adults are pale brown in color and measure 2-4 mm in length. Females have two large dark patches on the elytra, males are less distinctive marked.
Pests are scrapping the lower epidermal cells between the leaf veins away. Larvae are yellow in color, and covered with long spines. Adults are 6-8 mm long with typical oval ladybird shape. Color is variable, but generally adults are brown with black spots on the elytra.
Phyllotreta striolata – Cabbage flea beetle
Larvae are hidden, they feed on roots and organic matter in the soil. Adults are shiny black with characteristic yellow stripes on the elytra. The body length is about 2.2 mm. Adults chew small, round holes in leaves.
Tribolium castaneum – Red flour beetle
Larvae develop on undamaged grain and attack mainly dried stored products. The reddish-brown beetles are 2-4 mm long, flat and have an oblong shape. Head an upper thorax are covered with punctures.
Tribolium confusum – Confused flour beetle
Larvae develop on undamaged grain and attack mainly dried stored products. The reddish-brown beetles are 2-4 mm long, flat and have an oblong shape. Head an upper thorax are covered with punctures.