Final answer:
Cimex lectularius is known as the common bed bug, a parasitic insect that feeds on human blood and can infest living spaces.
Step-by-step explanation:
Cimex lectularius is also known as the common bed bug. These small, parasitic insects feed exclusively on the blood of warm-blooded animals, particularly targeting humans. Bed bugs are known for their ability to infest living spaces such as bedrooms, and can cause a variety of problems ranging from skin rashes to allergic symptoms. Understanding how to identify and manage bed bug infestations is an important part of maintaining a healthy living environment.