University of Kentucky Department of Entomology

Mystery Bug Answers

Mystery Picture #21

Mystery Picture #21

(Mystery Pictures)(Mystery Pictures)


The German cockroach is a very common pest and can be found throughout a structure. It is usually found in kitchens or bathrooms but can also be found in any room where people commonly eat or drink such as the den, living room or bedroom. It spends about 75% of its time in cracks and crevices located near sources of food or water. It feeds on all types of food, glue, soap and toothpaste. An interesting site that tells more about cockroaches can be found here.


Even thought the Flour beetle is a small insect, only 1/8 inch long, it is one of the most important pests of stored products in the home and in grocery stores. Although adults have wings, they do not fly. They generally attack damaged grains, grain products, peas, shelled nuts, beans, spices, dried fruits, milk chocolate, drugs, snuff, and cayenne pepper. The female can deposit 300 to 500 eggs during her life. She only lays 2 to 3 eggs per day, but can live for up to 3 years. The entire life cycle can be completed in only 7 weeks. To find out how to control this stored product pest, see EntFact 612, Stored Product Pests in the Pantry and EntFact 635, Controlling Stored Products pests Using Low Temperature.

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