Wieczorek, K. “Description of Sexuales of <i>Sipha (Sipha) littoralis</I> (Walker, 1848) (Aphididae: Chaitophorinae) With Remarks on Its Distribution and Host Plants”. Entomologica Fennica, vol. 20, no. 2, June 2009, pp. 100-4, doi:10.33338/ef.84467.