View the bed bug pictures to get a better look at the shape, size and color variations. Nymphs (young bed bugs) are semi-translucent. When they feed they fill with blood, making their belly a dark brown and sometimes causing a spotted pattern where the blood is visible inside their abdomen.
Description: This 2006 photograph depicted a dorsal view of a bed bug nymph, Cimex lectularius, as it was in the process of ingesting a blood meal from the arm of a "voluntary" human host, which could be seen filling the insect's abdomen. Bed bugs are not vectors in nature of any known human disease.
A cluster of bed bug eggs with nymphs. During this molting process, you may see signs of the bed bugs, because as nymphs molt, they leave behind the skins they have shed. These skins accumulate as the bug population rises. Bed bug excrement is another sign that you will see, as it appears as dark spots on the sheets.
Young bed bugs (also called nymphs), in general, are: smaller, translucent or whitish-yellow in color; and if not recently fed, can be nearly invisible to the naked eye because of coloring and size.
While the bed bugs are likely hibernating and hidden in tiny crevices throughout the home, this is the perfect time to utilize the most effective extermination method: whole-house heat treatments. Bed bugs, nymphs, and eggs are eradicated at a fairly low temperature of 119 to 125 degrees for about an hour.
Bed bug nymphs can represent a large number of the total bed bugs in an established infestation. Due to their small size, they are even harder to detect than adult bed bugs. Nymphs are quite small and range in size from 1.3 millimeters to 4-5 millimeters in length.