Introduction: Anopheles Mosquitoes are notorious for spreading Malaria throughout the world. Fortunately, we no longer fear the threat of Malaria in Colorado, but we do have the Malaria mosquitoes, in low numbers, in the District. These mosquitoes are usually not caught in our traps and represent only a small proportion of the mosquitoes of the Grand Junction area. They are easily identified by their long palpi and dark scale spots on the wings. There are two species found in the District.Life Cycle: Both male and female mosquitoes survive over winter. The female deposits eggs on the surface of the water individually. The eggs float laterally on their sides supported by a float on each side of the egg. The larvae are easily identified by floating parallel to the water surface just under the surface of the water.
Other mosquito genus that we find include the Culiseta. This genus is represented by three species here in the District. This group of mosquitoes are much larger in size than most of our other mosquitoes. They are large and have a blunt terminating abdomen like the Culex mosquitoes and have a downward curve of the proboscis. The most common Culiseta in this area is the Winter Marsh Mosquito. It tends to have a larger presence in the District during the beginning and end of the season.
A very unusual type of mosquito for our area is of the Psorophera genus. We had not seen this genus of mosquito in the valley prior to the year 2012. Some seasons we do not see any of this type of mosquito in our traps. They are very easily identified by the distinct color banding on the fringe of their wings.
There are several species of Aedes mosquitoes found in the district that are not particularly abundant or there are only found for a short time. Aedes increpitus is a mosquito found in the first few weeks of the year and usually in the Redlands area. Many other Aedes mosquitoes are very common on the Grand Mesa but are rarely found at elevations below 7000 ft.
One insect that is often mistaken for a mosquito is the Crane Fly. People often see them inside of their houses on the ceiling and walls. They look like giant mosquitoes. It is easily identified as not being a mosquito by the lack of a long feeding tube (proboscis).
Suppress mosquito populations, within the boundaries of the district, and in an environmentally responsible manner.
Monitor both larval and adult mosquito populations; to organize the population statistics, to evaluate organizational efforts, and to plan subsequent control strategies.