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Types of rodents

Rodents are one of the most important non - insects pests of agricultural crops, particularly rice.

Rodents are Vertebrata and belongs to Class: Mammalia and Order: Rodentia.

Rodents are five types

1. House rat.

2. House mouse.

3. Norway rat.

4. Smaller bandicoot.

5. Larger bandicoot.


Snails and Slugs


Snails and slugs are Invertebrata and belong to Phylum: Mollusca, Class: Gasteropoda.

Snails differ from slugs in having a spirally coiled shell over their body which in slugs is reduced and completely hidden under the mantle.

1. Common garden snails: Helix, Macrochlamys indica.

2. Green house snail: Opeas gracilis.

3. Giant African snail:


Rice moth


Scientific name: Corcyra cephalonica.

Family: Galleridae.

Order: Lepidoptera  .

Host range: Rice, jowar, other millets, whole cereals, cereal products, pulses, processed products of cereals, pulses, oil seeds, nuts, dry fruits and milled spices.

Symptom of damage: Presence of dense webbing of gra


Saw toothed grain beetle


Scientific name: Oryzaephilus surinamensis

Family: Silvanidae

Order: Coleoptera.

Host range: Rice, wheat, maize, cereal products, oil seeds and dry fruits.

Symptom of damage: Presence of off odour in grain.

Nature of damage: Adults and grub cause roughening of grain surface and off odour


Flat Grain Beetle


Scientific name: Cryptolestus minutas, Laemophloeus pusillus

Family: Cucujidae

Order: Coleoptera.

Host range: Rice, maize, wheat with excessive brokens, different flours, groundnut particularly with high moisture and mouldy grain.

Nature of damage: Both adults and grubs feed on stored products and

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