Non-biting midge flies or chironomids commonly occur in both inland and coastal areas with natural and man-made bodies of water. These midges are commonly known as “blind mosquitoes” because they are mosquito-like in appearance but do not bite. Midges are also called “fuzzy bills” because of the male’s bushy antennae (Figure 1). These aquatic insects are tolerant of a wide range of environmental conditions. Chironomid midges can be found in swift moving streams, deep slow moving rivers, stagnant ditches, and in lakes and ponds that are rich in decomposing organic matter. The presence of certain chironomid midge species is often an indicator of water quality issues.
Biology and Control of Non-Biting Aquatic Midges | NC State Extension Publications