Abstract
The distribution of the chironomid larvae in the Ohta River, Hiroshima Prefecture, was studied at 12 stations covering almost the entire length of the stream by the method in which male adults emerging from bottom samples were identified.
As a result, a total of 97 species was recorded, at least 12 of which are regarded as new species.
Seven of these new species belonging to 5 genera, i.e., Cricotopus, Microtendipes, Polypedilum, Rheotanytarsus and Tanytarsus were described. In addition, brief comments were made on the larval habitats of 3 of these species.
