22 



THE EUROPEAN FRUIT-SCALE. 



Aspidiotus ostrexformis Curt. 



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

 under "More important scale insects.'") 



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

 u More important scale insects. 1 ') 



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

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

 book, U. 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 Mytilaspis pombrum 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 olex Bern. 



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

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



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

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



Exhibit: Infested twig. 



INJURING THE LEAVES. 



PISTOL CASE-BEARER. 



Coleophora malivorella Riley. 

 (Feeds on leaves and buds.) 



For general account see Slingerland, Bui. 124, Cornell Univ. Agi\ 

 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. 



