trogoderma granarium life cycle
The pupal stage lasts 2-5 days and quiescent adult stage 1-2 days. Haines CP, 1991.
The early stage The khapra beetle produces between one and nine generations per year depending on factors such as the host species, temperature, light and moisture. Severe infestations may cause unfavorable changes in chemical composition.
Damage also may lead to significant reduction in seed viability. M'C�&�Eνg��|6:# �B�I&}L}��Q�_'B!��AH���"��թ&z��fCo�����`��>p�Cpl|br����ZV����/�%3Cr3�!�]��Ġ1dhRV��X���m��S��@�@�@����ػD�Ħn*���R��8��lF,�#N�C�b>M|%4>����129]]���H&��?V���_�PB��la� Its discovery in a non-infested area usually leads to an immediate quarantine of suspected goods and an expensive eradication and control effort. The khapra beetle has a tolerance to many surface insecticides and fumigants. Beetle larvae are able to crawl into cracks and crevices of packing material and enter diapause for extended periods of time, maintaining its presence in very low nu…
Pupal period may vary between 6 and 15 days depending upon temperature. It prefers grain, oilseeds and cereal products but can also develop on animal matter.
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G�����qP}C,�X���!�����st��U It can also occur in grain stores, food stores, malthouses, seed processing plants, fodder production plants, dried milk factories, merchant stores, and stores of used packing materials. Adult is a small sluggish beetle, 2.0-4.0 mm long, oval in shape, dark brown in colour with still darker patches on body and covered with short scattered hairs. The khapra beetle is spread by commerce and trade of infested goods and containers. The antennae are yellowish-brown with a distinct club; its legs are yellowish-brown.
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No eggs are produced at 20°C. Adults have wings but do not fly. If you suspect the khapra beetle, Trogoderma granarium, please contact your local cooperative extension agent or your local NPDN diagnostic lab.
The khapra beetle is oblong-oval and densely hairy. Feeding performance and life table parameters of Khapra Beetle, Trogoderma granarium Everts (Coleoptera: Dermestidae) on various barley cultivars - Volume 107 Issue 5 - A. Golizadeh, Z. Abedi
Shed skins and faeces can also contaminate grain and cause allergic reactions.Visual inspection can be used but as the beetles crawl into crevices deep into grain stores they can be difficult to detect until numbers become quite large. High humidity slows down population increase. Head is small bearing sharp, mandibulate mouth parts and short, capitate antennae. Incubation period is about 6 days under favourable conditions.Larvae are straw coloured, 4.5 mm long, densely covered with tufts of hairs and having long tufts of hairs on the posterior end. ����+m
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It is the most common Trogoderma pest in homes. They can feed on products with as little as 2% moisture content. hޜ�=O�0��xl�:�L*U�� ���!-� Larval development usually takes 4-6 weeks during which time they moult 4-15 times.
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