34 



THE WALNUT SCALE. 



Aspidiotus JLigktiis-regix Coinst. 



(Food-plants: Ash, cherry, crab-apple, currant, English walnut, 

 locust, peach, pear, prune, etc. See under "More important scale 

 insects.") 



For bibliography and food plants see Fernald, Cat. Coccida^ of 

 World, Bui. 88, Mass. Agr. Coll., p. 265, 1903. 



Exhibit: Infested twig. 



THE GREEDY SCALE. 

 Aspidiotus rapax Comst. 

 (Food-plants: Cottonwood, maple, olive, pear, quince, apple, etc. 

 See under "More important scale insects.") 



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

 World, Bui. 88, Mass. Agr. Coll., pp. 276-278, 1903. 

 Exhibit: Infested twig. 



THE EUROPEAN FRUIT SCALE. 



Aspidiotus ostrescformis Curt. 



(Food-plants: Apple, cherry, maple, oak, peach, pear, etc. See 

 under "More important scale insects.") 



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

 World, Bui. 88, Mass. Agr. Coll.. pp. 268-270, 1903. 



Exhibit: Infested twig. 



THE WEST INDIAN PEACH SCALE. 



Diaspis pentagona Targ. 



(Formerly D. lanatus. See under "More important scale insects.") 

 For bibliography and partial list of food plants see Fernald, Cat. 

 Coccidae of World,^ Bui. S%, Mass. Agr. Coll., pp. 231-235, 1903; Riley 

 and Howard, Insect Life, v. VI, pp. 287-295, figs., 1894. 

 Exhibit: Infested twig. 



THE ROSE SCALE. 



Avlacaspis rosse Bouche. 



(Food-plants: Blackberry, mango, myrtle, pear, raspberry, rose, 

 Cycas, Ailanthus, etc. See under "More important scale insects.") 



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

 Mass. Agr. Coll., p. 236, 1903. 



Exhibit: Infested twig. 



THE WOOLLY APPLE APHIS. 



Schizoneura lanigera Hausm. 



For general account see Marlatt, Cir. 20, Div. Ent., U. S. Dept. 

 Agric, 1897. 



Exhibit: Infested roots, twigs, and figure. 





