38 



THE GRAPEVINE ROOT-BORER. 



Memythrus polistiformis Harr. 

 (Formerly Sciwpteron.) 



For general account see Lugger, 1th Rpt. St. Ent. Minn., pp. 55- 

 57, 1899. 



Exhibit: Figures. 



INJURING LEAYES AND ROOTS. 



GRAPE PHYLLOXERA. 



Phylloxera vastatrix Planch. 

 For general article see Marlatt, Farmers' Bui. 70, U. S. Dept. 

 Agric, pp. 4-9, figs., 1898. 

 Exhibit: Work and figure. 



INJURING THE STEMS AND BRANCHES. 



COTTONY MAPLE SCALE. 



Pulvinaria innumerablis Kathv. 



(Foot-plants: Alder, apple, box-elder, elm, grape, linden, maples, 

 pear, willow, etc. See under "More Important Scale Insects.") 



For bibliography and food plants see Fernald, Cat. Coccidse of 

 World, Bui. 88, Mass. Agr. Coll., pp. 131-135, 1903; Howard, Bui. 

 22, n. s., Div. Ent., U. S. Dept. Agric, pp. 8-16, figs. 4, 1900. 



Exhibit: Infested twig. 



THE GRAPE SCALE. 



Aspidiotus uvse Comst. 

 (Food-plants: Ampelopsis, grape, hickory.) 



For bibliography see Fernald, Cat. Coccidae of World, Bui. 88, 

 Mass. Agr. Coll., p. 280, 1903. 

 Exhibit: Infested twig. 



THE APPLE TWIG-BORER. 



Amphicerus bicaudatus Say. 

 For general account see Marlatt, Farmers' Bui. 70, U. S. Dept. 

 Agric, pp. 11-13, figure, 1898. 

 Exhibit: Adult and figure. 



RED-SHOULDERED TWIG-BORER. 



Sinoxylon basilare Say. 

 For general account see Lugger, 5th Rpt. St. Ent. Minn., pp. 70- 

 72, 1899. 

 Exhibit: Adult and figure. 



THE SNOWY TREE-CRICKET. 



GEcanthus niveus DeG. 

 For general account see Lugger, 3d Rpt. St. Ent. Minn., pp. 269-271, 

 1898. 



Exhibit: Adult and figure. 



