- Trogoderma granarium is native to an area extending from Burma to West Africa. Its northern most range extends to the 35° parallel and to the equator to the south.
- Life Cycle
- Mated females live 4-7 days, while unmated females live from 20-30 days. Males live 7-12 days. Adults have wings but do not fly. Adults feed very little. Mating occurs about five days after emergence. Egg laying is temperature dependent, beginning immediately at 104°F (40°C), but is delayed by a few days at cooler temperatures. No eggs are produced at 68°F (20°C). Females lay an average of 50 to 90 eggs which are loosely scattered in host material. Eggs hatch in 3 to 14 days. Complete development from egg to adult varies from 26 to 220 days and is dependent on temperature, with optimum temperature for development at 95°F (35°C). If the temperature falls below 77°F (25°C) for a period of time or if larvae are very crowded, they may enter diapause. Larvae can survive temperatures below 17.6°F (-8°C). In diapause, larvae can molt but are inactive and can remain in this condition for years. Development can occur at a relative humidity as low as 2%.
- Trogoderma granarium was first found in California in 1953. A massive control and eradication effort began which cost an estimated $15 million. Isolated infestations have been found in several states including California, Maryland, Michigan, New Jersey, New York, Pennsylvania, and Texas.
- Control Efforts
- Inspections at ports and other entry points are important to keep this pest out of America. Eradication programs use fumigants, surface sprays and heat treatments to kill Trogoderma granarium.
- Data Sheets on Quarantine Pests - European and Mediterranean Plant Protection Organization
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Invasive Listing Sources
Other System LinksITIS: 728163
NPDN Pest: INATANA
CategoriesCategory: Stored Food Pests
|Common Name Reference:|| Bosik, J. J. Common Names of Insects and Related Organisms 1997. Lanham, MD: Entomological Society of America (ESA), 1997. 232 pp.|
|Scientific Name Reference:||Die Kafer Mitteleruopas Katalog, by Wilhelm H. Lucht, 1987, Goeke & Evers Verlag, Krefeld, 342 pp.|