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Immature larvae are up to 5 millimeters long and are covered in dense, reddish-brown hair. The larval stage can last four to six weeks, but can be extended up to seven years. [5] Males are dark brown or black, and females are slightly larger with lighter colors. [5] The lifespan of an adult khapra beetle is usually between five and ten days. [5]
Larvae are yellow-white but the head and body setae are brown. As the larvae further develop, their color changes to a golden or reddish brown and the abdomen portion becomes proportionally shorter. The mature larvae reach a maximum length of 6 mm long and 1.5 mm wide. [27] The khapra beetle is a stored-product pest.
Trogoderma angustum Trogoderma glabrum Trogoderma granarium Trogoderma megatomoides Trogoderma variabile larva Trogoderma versicolor. Trogoderma is a genus of beetles in the family Dermestidae, the skin beetles. There are about 135 species worldwide. [1] Some species are pests of stored animal and plant products. [2]
Recent research indicates that Trogoderma is polyphyletic, comprising two distinct, unrelated lineages. One lineage corresponds to Trogoderma sensu stricto - a primarily Holarctic clade that includes the type species Trogoderma glabrum and the economically significant Khapra beetle (Trogoderma granarium).
The larvae develop for five to seven weeks, and the adult beetles live for four to six months. [1] The beetle feeds on carrion and dry animal products. [1] They are pests of the silk industry in Italy and India. [1] Dried fish, cheese, bacon, dog treats, and poultry are some of the foods that the beetle gets into. [1]
Of the quarter million species of beetles, some adults damage books by eating paper and binding materials themselves. However, their larvae do the most damage. Typically eggs are laid on the book's edges and spine. Upon hatching, they bore into, and sometimes even through, the book. [3] Drugstore beetle on a human finger
The varied carpet beetle (Anthrenus verbasci) is a 3 mm-long beetle belonging to the family Dermestidae, positioned in subgenus Nathrenus.They are a common species, often considered a pest of domestic houses and, particularly, natural history museums, where the larvae may damage natural fibers and can damage carpets, furniture, clothing, and insect collections.
The larvae of many beetle families are predatory like the adults (ground beetles, ladybirds, rove beetles). The larval period varies between species, but can be as long as several years. The larvae of skin beetles undergo a degree of reversed development when starved, and later grow back to the previously attained level of maturity.