Mountain mosquitoes of the Gothic, Colorado area

Abstract

Mosquito species inhabiting a high mountain area (9000 to 12,000 feet) in south-central Colorado west of the Continental Divide comprised 11 Aedes, 4 Culiseta, 1 Culex, and 3 chaoborines. They can be placed by altitudinal associations in two major groups: 1) mountain species, subdivided into alpine (A. impiger) and subalpine (A. cataphylla, communis, hexodontus, implicatus, and pullatus; Culiseta incidens, impatiens, inornata; probably Aedes fitchii and Culiseta alaskaensis), and 2) valley and foothill species (Aedes cinereus, dorsalis, increpitus, spencerii idahoensis, and Culex tarsalis). Seasonal development, abundance, and species dominance, as shown by four seasons of collecting, are discussed and illustrated by charts; notes on habits of adults and habitats of larvae, with associated species and collection records, are given for each species, along with pertinent taxonomic observations. The origin of the faunal elements represented by the 28 species of the Colorado Rockies is discussed. One species of mosquito (Aedes trichurus Dyar), taken east of the study area, and one chaoborine (Eucorethra underwoodi Und.) are listed as new state records.

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