Culiseta annulata overwinters in its adult stage. In Northern Europe, females of this species are found in caves from autumn to early spring together with females of genus Culex (Culex pipiens, Culex torrentium, and Culex territans).[4][5]
^Bei-Bienko, G.Y. & Steyskal, G.C. (1988) Keys to the Insects of the European Part of the USSR, Volume V: Diptera and Siphonaptera, Parts I, II. Amerind Publishing Co., New Delhi. ISBN81-205-0080-6ISBN81-205-0081-4
^P.S. Cranston; C.D. Ramsdale; K.R. Snow; G.B. White (1987). Adults, Larvae, and Pupae of British Mosquitoes (Culicidae) A Key. Freshwater Biological Association. pp. 152 pp. ISBN0-900386-46-0.