Help Me Figure Out What This Is…
My house has recently had an infestation of a bug that seems to really be a fan of grain. We’ve found it inside our sealed cereal boxes and also in packets of oatmeal. After putting all of our food in sealed containers the contagion seems to have died down, but now I’m finding some throughout our house. I took a number of digital pictures but this is the only one that came out pretty well. The bug resembles a very tiny ant except it obviously isn’t an ant. It is about 2 mm long. Hopefully you can identify it, I’ve searched many many sites.
It looks like you have a type of Merchant Grain Beetle, possibly Oryzaephilus mercator or the closely related Saw-toothed Grain Beetle, Oryzaephilus surinamensis. These are very small beetles that are elongated. According to Hogue: “The appearance of these pests in a tightly sealed package of dried food is a source of wonder to housekeepers. Entry is commonly by way of minute imperfections in the seal, but some species may bore through paper and cardboard containers to get at the contents. In other cases, infestations occur when the foods are stored in bulk in railroad cars, warehouses, and at other stops along the processing line.”