Beetles in the family Lyctidae are known as powderpost beetles. They are so named because larvae leave a fine, dustlike powdered frass (a mixture of feces and food fragments) in their galleries that occasionally falls out of exit holes into small piles on floors or other surfaces. This powdered frass is characteristic of powderpost beetles […]
Category Archives: Non Vector
Characteristics Adult Adult body around 8 mm long.Colour reddish brown to black.The body is elongate and cylindrical.Head directed downward and usually not visible from above.Larvae Larvae about 5 – 8 mm long.Colour nearly white. BodyC- shaped but with thorax enlarged.Introduction Bostrichids are commonly known as the false powderpost beetles. They are worldwide in distribution. Damage […]
Bostrichids are commonly known as the false powderpost beetles. They are worldwide in distribution. Characteristics Adult body around 8 mm long.Colour reddish brown to black.The body is elongate and cylindrical.Head directed downward and usually not visible from above. LarvaeLarvae about 5 – 8 mm long.Colour nearly white.Body C- shaped but with thorax enlarged. Biology & […]
Yellow Mealworm BeetleMealworm beetles are large beetles, two species of which are the largest of the stored product beetles at 5/8 inch to 4/5 inch (14 to 20mm) in length. They are dark brown or black in colour and, to an untrained eye, may resemble ground beetles in appearance. Mealworm beetles are uniformly oval in […]
Squarenecked Grain BeetleLike other members if the beetle Family Cucujidae, the squarenecked grain beetle is a flat beetle – a necessary shape for hiding in small cracks and under items. It is oblong, reddish brown in color with shiny, polished appearance. It grows to a length of 1/10 inch (2.5 mm) so it is fairly […]
Characteristics Spider beetle are so named because some species actually resemble small spiders in appearance with their small head and prothorax and larger abdomen. The shiny spider beetle, Gibbium psylloides and the American spider beelte, Mezium americanum, in particular, resemble spiders due to their globular-shaped abdomens. Other spider beetle species found in the Ptinus have […]
Siamese Grain BeetleThe Siamese grain beetle is a small (1/10”, 2.5 to 3 mm), flattened, reddish brown beetle that resembles a miniature cadelle in appearance. Biology & Life Cycle The Siamese grain beetle is a worldwide food-infesting species that is commonly found in a wide variety of foods including legumes (beans), rice and rice products, […]
Characteristics Seed beetles are short, stout beetles belonging to the beetle Family Bruchidae. The main seed beetles that are stored product pests are the bean weevils, Acanthoscelides bruchid, cowpea weevils, Calosobruchus spp, and groundnut bruchid, Caryedon serratus. The bean weevil and cowpea weevils closely resemble each other. These two small beetles are short ( 1/8″, […]
Characteristics The sawtoothed and merchant grain beetles are small, long, flattened beetles about 1/10 inch (2.5 mm) in length. These two dark brown beetles are essentially identical to each other and are characterized by the six-saw-like teeth on each side of the prothorax. The difference between the two species is seen by examining the eyes […]
Characteristics Rice weevils range in size from 1/8 inch to 3/16 inch (3.1 to 4.8 mm) and are dark reddish-brown in colour. The thoracic pits of a rice weevil are round or irregular in shape. Rice weevils often have four lightcoloured patches on its elytra (wing covers), but these are not always present or visible. […]