Saw-toothed grain beetlesAdults are about 3mm long and have tooth-like projections along the side of the segment just behind the head. Flours and meals from cereal products are favorite foods. Larvae are yellowish-white with a brown head.
Confused flour beetleThis insect has been a pest of cereals since the time of the pharaohs. It is about 3mm long and infests flour and meal type of products but many others are also attacked. They can get into packages through very small openings. Larvae are whitish tan with a brown head capsule.
Flat grain beetleAbout the smallest beetle to infest flour. It is flattened and the long antennae make it easy to distinguish from the other beetles. It is very common and found most often in grain and meal that are in poor condition.
White-marked spider beetle This insect moves rapidly and is characterized by the white, hairy patches on the back. It is reddish brown, about 4mm long with longs legs. It can be found in large numbers under certain conditions.
California spider beetleThe black color with conspicuous white spots distinguish this insect. It is about 4-5mm long and not as common as the white-marked spider beetle.
Carpet beetlesMost adult carpet beetles are about 2mm long and varied in color. They can have several generations per year.
Black carpet beetle This carpet beetle is completely black and about 3mm long. There is only one generation per year with this insect.
