Published online by Cambridge University Press: 31 May 2012
Four new species of aphids are described: alate and apterous viviparous females of Masonaphis patriciae new species from Tsuga heterophylla (Raf.) Sarg. in British Columbia; apterous viviparous females of Masonaphis menziesiae new species from Menziesia ferruginea Smith in Alberta; apterous viviparous females, oviparae, and males of Aphis rubiradicis new species from Rubus chamaemorus L. in Saskatchewan; and apterous viviparous females of Aulacorthum capilanoensis new species from Rubus spectabilis Pursh in British Columbia.