Species: Anopheles freeborni


Females feed almost exclusively on mammals. Common hosts include cattle, horses, dogs, rabbits and man. Once considered an important vector of malaria in western North America.


Larvae prefer clear, fresh water in sunlit or partly shaded pools. Commonly found in roadside depressions, around the margins of pools with cattails. Overwinter as adults.

Identifying Characteristics:

Maxillary palpi on head as long as proboscis, wing entirely dark scaled with distinct dark spots, palpi with dark scales, tuft of setae between eyes with both dark and pale setae.

Distribution Map:

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Mosquito and Vector Surveillance Program

MSU Extension - Department of Animal and Range Sciences

Montana State University
P.O. Box 172900
Bozeman, MT 50717-2900

Location: Marsh Labs, Room 59

Veterinary Entomology Research Associate:

Marni Rolston

Professor Emeritus of Veterinary Entomology:

Dr. Greg Johnson


Dr. Grant Hokit (Carroll College)