An adult bed bug, when viewed up close, reveals a rather small, oval-shaped insect with a flattened body. Its size typically ranges from 4 to 5 mm in length, which is roughly the size of an apple seed.
The bed bug images below depict a bed bug as it gradually fills with blood during a blood meal. It’s quite intriguing because the final images do not exactly match our preconceived notions of what bed bugs look like.
As the nymph molts into its second stage, it grows a bit larger, measuring around 2-2.5 millimeters. It still maintains a translucent appearance but may show subtle darkening, especially in its abdomen.
When bed bugs hide in the cracks and joints of wooden furniture, they are adept at camouflaging. In such locations, they can resemble small, brown specks or dark dots. Their segmented bodies may be visible if you look closely.