Adult bed bugs in general are.
Actual size black beetle bed bugs.
Bed bug life cycle bed bug biology naturally promotes infestation.
Once engorged the pest s body expands into a longer more cylindrical shape.
Some are black or dark enough to appear black when observed with the human eye.
Adult bed bugs can reach a size of about 1 4 inch long.
They vary in size but depends on where they are in their life cycle.
Others might be mottled with spots of brown and black on a lighter background.
Like many other beetles they are round or oval and convex like ladybugs.
The average adult bed bug size ranges from 1 4 to 3 16 of an inch in length.
Typically bed bug nymphs will be smaller than a fully fed adult bed bug.
Nymphs range from 1 3 mm to 4 5 mm.
Long and brown with a flat oval shaped body if not fed recently.
On average though they appear about the size of an apple seed.
Balloon like reddish brown and more elongated if fed recently.
Adult bed bugs 5 7 mm or 3 16 1 4 inch about the size of an apple seed the life cycle of a bed bug includes multiple nymphal stages with the insects blood feeding between each nymphal stage.
A bed bug that has eaten a blood meal will be bigger than a regular one.