22 



THE EUROPEAN FRUIT-SCALE. 



Aspidiotus ostreseformis Curt. 



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

 under "More important scale insects.") 



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

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



Exhibit: Infested twig. 



THE SCURFY BARK LOUSE. 

 Chionaspis furfur a Fitch. 



(Food plants: Apple, cherry, currant, elm, pear, etc. See under 

 "More important scale insects.") 



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

 World, Bui. 88, Mass. Agr. Coll., pp. 217-219, 1903; Howard, Year- 

 book, IT. S. Dept. Agric, 1891, pp. 259-261, figs.; Banks, Bui. 34, 

 Div. Ent., U. S. Dept. Agric, p. 11, 1902. 



Exhibit: Infested twig. 



OYSTER-SHELL BARK-LOUSE. 



Lepidosaphes ulmi Linn. 



(Attacks principally apple, currant, Cornus, cottonwood, lilac, pear, 

 sassafras, etc. Formerly called Mytilaspis pomorwn Bouche. See 

 under "More important scale insects.") 



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

 World, Bui. 88, Mass. Agr. Coll., pp. 311-317, 1903. 



Exhibit: Infested twig. 



THE BLACK SCALE. 



Saissetia olese Bern. 



(Food plants: Apple, apricot, olive, orange, pear, plum, rose; for- 

 merly a Lecanium. See under " More important scale insects.") 



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

 World, Bui. 88, Mass. Agr. Coll., pp. 205-206, 1903. 



Exhibit: Infested twig. 



INJURING THE LEAYES. 



PISTOL CASE-BEARER. 



Coleophora mcdivorella Riley. 

 (Feeds on leaves and buds.) 



For general account see Slingerland, Bui. 121, Cornell Univ. Agr. 

 Expt. Sta., 1897. 



Exhibit: Cocoon, adult, work, and figure. 



EYE-SPOTTED BUD-MOTH. 



Tmetocera ocellana Schiff. 

 (Feeds on buds and } 7 oung leaves.) 



For general account see Slingerland, Bui. 50, Cornell Univ. Agr. 

 Expt. Sta., 1893. 



Exhibit: Pupa, adult, and work. 



