Boreal species. Distributed in the forest zone of the Palearctic and Iearktikn. In the RSFSR range covers not only the forest area, but tapers off further south (Sazonov 1959). In Kazakhstan, distributed in the northern plains and in the mountains. Imago captured in East Kazakhstan, Pavlodar and Aktyu binskoy-fields, and the larvae are found in the Pavlodar and Kostanai regions. Known from adjacent areas of Western Siberia and the Altai (Zhelohovtsev, 1938 Kukharchuk, 1965).
Monocyclic late spring look. Insignificant number in all regions of Kazakhstan, except Bayanaul, confirms the view ON Sazonova (1959) And D.D.Nefedova (1962 6) of its relatively rare occurrence. The mass is found only in Accordion-Aule (Pavlodar region). In the bush near the wetland, formed by streams flowing down from the mountains, and in low-lying clusters meltwater.
In foothill steppes of Eastern Kazakhstan vyplazhivalis males and females in the middle of June. At the same time, this kind of captured in Aktobe and Pavlodar areas. The development took place in the same waters, where a group of other «Cantans». Thus, phenology and ecology of this species and other members of this group are similar.
Because of the small number of Ae. riparius difficult to judge its aggressiveness and host range. Perhaps in Accordion-Village high numbers attacking human females due to the lack of other sources of power, as in places of observation of possible prokormiteley were only birds.