Flour-beetle
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Gnatocerus maxillosus
flour beetle
Gnatocerus maxillosus is a species of darkling beetle in the family Tenebrionidae. It is a stored product pest commonly associated with grain and flour storage facilities. The species is known for its distinctive enlarged mandibles in males, which function as weapons in male-male combat. It has been documented from several European countries including France, Italy, and Albania, as well as the Canary Islands.
Tenebrioninae
darkling beetles (subfamily)
Tenebrioninae is the largest subfamily of darkling beetles (Tenebrionidae), containing more than 20 tribes and including economically significant species such as flour beetles (Tribolium spp.) and the yellow mealworm (Tenebrio molitor). Following a major 2021 taxonomic revision, approximately half of the former species diversity was moved to the resurrected subfamily Blaptinae. The subfamily includes both stored-product pests and species used as feeder insects for reptiles and amphibians.
Tribolium destructor
destructive flour beetle, dark flour beetle
Tribolium destructor is a stored product pest in the family Tenebrionidae, commonly known as the destructive or dark flour beetle. It infests stored flour, grain, and other dried starchy materials. Research has examined its reproductive biology, including effects of food quality and mating frequency on fecundity. Its larvae serve as hosts for the gregarine parasite Gregarina confusa, and the species has been used in studies of host-parasite interactions under nutritional stress.
Tribolium freemani
Freeman's flour beetle
Tribolium freemani is a flour beetle closely related to the model organism and major stored-product pest Tribolium castaneum. First described from Kashmir, India around 1893, the species was rediscovered in 1973 in Japan in a shipment of corn from Brazil. It can hybridize with T. castaneum, producing sterile offspring. The species has been primarily studied for comparative genomics, particularly regarding 5S rRNA gene organization and satellite DNA composition, which differs markedly from its sibling species despite high gene sequence homology.
Tribolium madens
black flour beetle
Tribolium madens, the black flour beetle, is a stored product pest in the family Tenebrionidae. It belongs to the same genus as the economically significant red flour beetle (T. castaneum) and confused flour beetle (T. confusum). The species possesses a highly satellite DNA-rich genome, with 124 satellite DNAs comprising 41.4% of its genetic material. Its karyotype consists of 2n=20 chromosomes with variable numbers of small supernumerary B chromosomes.