Life cycle image courtesy of:
American Mosquito Control Association.

There are approximately 170 different mosquito species in the United States, with about only 50 of them found in Colorado. Within the Alamosa Mosquito Control Districtís boundaries 12 species have been identified, and only 7 of those species are commonly found throughout our summer months. However, these 7 mosquito species keep us very busy. One of which is Culex tarsalis. Historically, it is the most commonly populated species in our district, and more importantly a mosquito vector that carries West Nile virus. We are always on the lookout for other species that can migrate from the south; species that carry diseases like chikungunya, dengue fever, Eastern equine encephalitis and of course West Nile virus (fever).
Below is a brief explanation of the mosquito life cycle. Please refer to the FAQ page for more information.

The mosquito has four life stages: egg, larvae, pupa and adult.
Eggs: Larvae: Pupa: Adult:
Quick Links

Alamosa Mosquito Control District
511 4th Street, Alamosa, CO 81101 - 719.589.5409 -