During 1925–1926 a number of tulip bulbs and iris corms infested with Aphides were received from various sources, as well as Aphides from growing tulips. These species were reared and observations made on the progress of the infestation on tulips. It is evident that one species Anuraphis tulipae (B. de Fonsc.) is a serious pest of stored bulbs, especially tulips, and another species, Rhopalosiphoninus tulipaella (Theo.), may also be of importance in this respect. Since these two species are not well known, it may be desirable to give detailed drawings of the species together with some notes on the observations made. It is hoped that the complete life-cycles and alternative food-plants of these species may be traced later.

In addition to the two species mentioned above, Macrosiphum gei (Koch) and Myzus persicae (Sulz.) were also found infesting tulips.