How to Tell the Difference Between Male & Female Bedbugs

Observe live bedbugs reproducing if you can, as this is the easiest and surest way to differentiate male from female bed bugs. Usually the male will rest on top of the swollen abdomen of the female (female bed bugs must have a blood meal before insemination.)

Compare bedbugs against one another to see the differences between male and female. Females tend to have more symmetrical bodies and more rounded rear ends, while the males can be smaller with sharper, sometimes asymmetrical end points.

Look at the bedbug's first set of legs, located on the head or neck below the antennae. Females tend to have their first legs protrude higher up on their bodies, appearing to emerge from the upper neck and even head of the animal, while males (partially due to their smaller size) have their first set of legs lower down on the neck or even main body.