The red flour beetle is a cosmopolitan pest of stored products, especially flour and processed cereals. Both larvae and adults cause damage by feeding on stored grains and milled products.<\/p>\r\n
Infestations can develop rapidly under warm conditions, and resistance to several insecticides has been reported.<\/p>\r\n
The species is particularly problematic in tropical and subtropical storage environments.<\/p>","at_a_glance":{"host_plants":"Stored cereals (wheat, maize, rice, barley, oats), beans, peas, flour and grain products","where_you_see_it":"In stored grain, flour, warehouses, silos","seasonality":"Year-round in storage facilities; population peaks in warm conditions","typical_damage":"Contaminated flour, musty odor, flour-like grain residues"},"difficulty":"high: High","virus_risk":"none","sections":{"identification":"
Adults<\/p>\r\n\r\n
Reddish-brown beetle<\/p>\r\n<\/li>\r\n \t
2.3\u20134.4 mm long<\/p>\r\n<\/li>\r\n \t
Flattened, elongated body<\/p>\r\n<\/li>\r\n \t
Antennae with a distinct three-segmented club<\/p>\r\n<\/li>\r\n<\/ul>\r\n
Eggs<\/p>\r\n\r\n
Small (about 0.5 mm), white, cylindrical<\/p>\r\n<\/li>\r\n \t
Often coated with flour particles<\/p>\r\n<\/li>\r\n<\/ul>\r\n
Larvae<\/p>\r\n\r\n
Yellowish-white, cylindrical<\/p>\r\n<\/li>\r\n \t
Light brown head<\/p>\r\n<\/li>\r\n \t
Up to 6 mm long<\/p>\r\n<\/li>\r\n \t
Two pointed appendages at end of abdomen<\/p>\r\n<\/li>\r\n<\/ul>\r\n
Key Clues<\/p>\r\n\r\n
Grayish-yellow flour<\/p>\r\n<\/li>\r\n \t
Musty odor in stored product<\/p>\r\n<\/li>\r\n \t
Adults visible on grain surface<\/p>\r\n<\/li>\r\n \t
Fine powdery residues<\/p>\r\n<\/li>\r\n<\/ul>","damage":"
Larvae feed on grain and flour, particularly preferring the embryo.<\/p>\r\n
Heavy infestations result in partially consumed grains and flour-like residues.<\/p>\r\n
Contaminated products may become moldy and unsuitable for consumption.<\/p>","life_cycle":"
Females lay up to 450 eggs in stored products.<\/p>\r\n
Eggs hatch within 5\u201312 days depending on temperature.<\/p>\r\n
Larval development lasts about 3\u20134 weeks.<\/p>\r\n
The life cycle can be completed in about 20 days under optimal warm conditions.<\/p>\r\n
Adults may live up to 18 months.<\/p>","monitoring":"
Inspect stored products regularly for beetles and larvae.<\/p>\r\n
Use pheromone traps to detect adult activity.<\/p>\r\n
Look for changes in odor, color, and texture of stored products.<\/p>","management":"
Cultural control: Maintain strict sanitation and remove infested residues from storage areas.<\/p>\r\n
Physical control: Use temperature control or modified atmospheres to reduce populations.<\/p>\r\n
Chemical control: Fumigation or approved insecticides may be required in severe infestations, with attention to resistance management.<\/p>"}},"_links":{"self":[{"href":"https:\/\/cubescircle.de\/en\/wp-json\/wp\/v2\/organisms\/5373","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cubescircle.de\/en\/wp-json\/wp\/v2\/organisms"}],"about":[{"href":"https:\/\/cubescircle.de\/en\/wp-json\/wp\/v2\/types\/organism"}],"wp:attachment":[{"href":"https:\/\/cubescircle.de\/en\/wp-json\/wp\/v2\/media?parent=5373"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}