Trogoderma granarium

Trogoderma granarium

Short pest overview:

The Khapra beetle originated in South Asia, is one of the world’s most destructive pests of grain products and seeds. It is considered one of the 100 worst invasive species in the world. Infestations are difficult to control because of the insect’s ability to survive without food for long periods, its preference for dry conditions and low-moisture food, and its resistance to many insecticides. Khapra beetle infestation can spoil otherwise valuable trade goods and threaten significant economic losses if introduced to a new area.

Geographic Distribution:

The Khapra beetle has become established in many Mediterranean, Middle Eastern, Asian and African countries. It has also been discovered in North America.

Life Cycle:

Larval development in Trogoderma granarium does not occur at temperatures below 21°C but can proceed at very low humidity. Oviposition commences immediately at 40°C and lasts 3-4 days, while at 25°C, there is a pre-oviposition period of 2-3 days, and oviposition may extend over 12 days. Generally, the females lay up to 35 eggs.