. Bulletin. Natural history; Natural history. 360 Illinois Natikal Histohv Survkv Bi as occurring Ijoth in "Illinois and New York.'" Baker (1919a) has described a Mclapliis. called iiiliiiifiis, collected on moss. May 5. 1916, at Springfield, West \'irginia, and suggests that there is a remote possibility of his in inn fits being the spring forms of rliois. This species was not taken by us during our work of the past three years, but there are specimens in the Survey collection which were found on sumach (Rhus) at Milan, Illinois. August 16, 1S?5. AI0RDWILK0[A Del Gierc
. Bulletin. Natural history; Natural history. 360 Illinois Natikal Histohv Survkv Bi as occurring Ijoth in "Illinois and New York.'" Baker (1919a) has described a Mclapliis. called iiiliiiifiis, collected on moss. May 5. 1916, at Springfield, West \'irginia, and suggests that there is a remote possibility of his in inn fits being the spring forms of rliois. This species was not taken by us during our work of the past three years, but there are specimens in the Survey collection which were found on sumach (Rhus) at Milan, Illinois. August 16, 1S?5. AI0RDWILK0[A Del Giercio MORDWILKOJA VAGABUNDA (Walsh) Fig, 46 Byrsocrppta xmciahunda Walsh, Proceedings of the Entomological Society, of Philadelphia. Vol. I, December, 1862, p. 306. This species was originally described by Walsh from fall migrants collected at Rock Island, Illinois. The galls caused by this plant are large, irregular, bladder-like growths (Fig. 46) on the terminal twigs of poplars. The life history of this migratory aphid is particu- larly interesting because the , or fall migrants, have been. Fig. 4(). A curious malformation of buds (it ilio iinplar, drltoidrs. caused by a plant louse, Mnifliiilkoio i^agabunda (Walsh); Savanna, July 9, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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