1. Food-plant catalogue of the aphids of the world;Patch;Maine Agric. Exp. Sta. Bull.,1938
2. Symptoms induced by some species of aphids feeding on ferns
3. Contributions to a monograph of the Aphididae of Europe IV;Hille Ris Lambers;Temminckia,1949
4. A species list of the Aphididae of the world and their recorded food plants;Wilson;Trans. Wis. Acad. Sci. Arts and Letters,1918
5. Miscellaneous aphid notes, chiefly from Oregon;Wilson;Trans. ent. Soc. Amer.,1915