Culex pipiens, also known as the common house mosquito, is a species of mosquito that is found worldwide. It is known to be a carrier of various diseases, including West Nile virus and encephalitis. There are many synonyms for the word "Culex pipiens" depending on the region and the specific species within the Culex genus. Some common synonyms include the northern house mosquito, the southern house mosquito, and the common mosquito. In addition, Culex mosquitoes are known by several other names in different countries, such as the urban mosquito in Europe and the bloodsucker mosquito in India. Regardless of the name, it is important to take measures to control mosquito populations and prevent the spread of disease.