The biting midges larvae fauna of the intertidal and supralittoral zones in Sel'dianaia small bay (Kandalaksha Bay of the White Sea) is studied. It is represented by Stilobezzia sp., Dasyhelea sp. and Culicoides manchuriensis immature stages. Their distribution displays the strict vertical zonation. The abundance of larvae collected differs strongly at the places with different conditions. The mass breeding of Culicoides and Dasyhelea in the tidal zone of Arctic Seas is noticed for the first time. The maximum density of larvae in several times greater compared to the similar biotopes of subtropical and the south of temporal regions.
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