What is the most common type of bedbug?

Cimex lectularius is indeed recognized as the most common type of bedbug. This species is prevalent in human habitats and is primarily responsible for infestations in homes, hotels, and other residential settings. It is known for its ability to adapt to various environments, making it a successful pest where humans reside.

Cimex lectularius feeds exclusively on the blood of humans and other warm-blooded animals, leading to the characteristic bites and reactions associated with bedbug infestations. The recognition of this specific species is crucial for effective pest control and management strategies, as it helps in identifying the right treatment methods.

The other species mentioned in the options, such as Cimex hemipterus and Cimex pipistrelli, are less common in domestic settings. Cimex hemipterus is often found in tropical and subtropical regions, while Cimex pipistrelli is associated with bat habitats and is not typically a concern for human environments. Anopheles stephensi, on the other hand, is a species of mosquito and not a bedbug at all, further solidifying the uniqueness of Cimex lectularius as the primary concern related to bedbug-related issues.