266 MAINE AGRICU1,TURAI, KXPERIMENT STATION. I913. 



Fig. 130. Antenna of fall migrant collected from mountain 

 ash. Pyrus sp. Typically VI is with two or more annulations, 

 but these are sometimes lacking. (63-11). 



BIBLIOGRAPHY. 



1879. Schizoneura americana, Riley, (in part?) Bulletin. U. S. Geol. & 

 Geograph. Survey Vol. V, No. i, "the deformation assumes 

 various distorted shapes, sometimes involving quite large masses 

 of the leaves." 



1897. Schizoneura americana, Gillette, (in part?). Bui. Div. Ent. U. S. 



Dept. Agric. 9, pp. 78-79. "The attack begins with the open- 

 ing of the first buds, w^hen the little, wrrinkled clusters of leaves 

 begin to appear from the terminal buds of small twigs upon 

 the trunk and large branches of the tree." 



1898. Schizoneura americana, Gillette, (in part.) Bui. A. E. S. Colo. 



47. P- 35 and Fig. 32. "The Elm L,eaf-cluster Gall. 

 1899 (1900). Schizoneura americana, Harvey, Bui. Me, Agr. Exp. Sta. 



No. 61, p. 32. Figure. 

 1900. Schizoneura americana, Lugger (in part). Bui. No. 69. Minn. 



Agr. Exp. Sta. Id. 6th Ann. Rept St. Ent. of the St. Exp. Sta. 



Univ. of Minn. p. 169. "If at all numerous they can greatly 



deform the ends of the twigs, where all the leaves are curled, 



forming a mass of sickly, yellowish leaves." 

 1904. Schizoneura americana (in part). Sanborn, Kansas Aphid, p. 25. 



"When numerous they give the leaves a whitish appearance 



and cause the terminal ones to bunch together, which gives the 



lice more protection." 

 1509. Schizoneura ulnii (americana). Gillette. Jour. Ec. Ent. Oct. Fig. 



16. Antenna. 

 1910. Schizoneura americana (in part). Patch. Bui. 181. Me. Agr. 



Exp. Sta. Fig. 151. 

 1912. Schizoneura lanigera {americana). Patch, Woolly aphid migra- 

 tion from elm to mountain ash. Jour. Ec. Ent. pp. 395-398. 



Figure 2. 



1912. Schizoneura lanigera {americana in part). Patch. Bui. 203. Me. 



Agr. Exp. Sta. 



191 3. Schizoneura sp. Gillette. 25th Ann. Rept. of the Col. Agr. Exp. 



Sta. p. 30, "the form producing the rosette like cluster of leaves 

 at the tip of elm twigs." 



