. Annual report of the State Entomologist of Montana . of Missoula. THE GREEDY SCALE INSECT. 2. Smith cider and other varieties of apples coming into the Montanamarket from California occasionally bear specimens of this scaleinsect. We have seen apples with many specimens of this speciescrowded in at the blossom and stem ends. It is not a species thatcould survive our climate and need not be feared as a pest on applesin Montana. It is common in greenhouses where it reproduces ingreat numbers. The scale is gray in color but somewhat transparent so that whencovering the yellow body of the living
. Annual report of the State Entomologist of Montana . of Missoula. THE GREEDY SCALE INSECT. 2. Smith cider and other varieties of apples coming into the Montanamarket from California occasionally bear specimens of this scaleinsect. We have seen apples with many specimens of this speciescrowded in at the blossom and stem ends. It is not a species thatcould survive our climate and need not be feared as a pest on applesin Montana. It is common in greenhouses where it reproduces ingreat numbers. The scale is gray in color but somewhat transparent so that whencovering the yellow body of the living female the scale has a yel-lowish tinge. When removed from the bark or fruit a white scaris left. The adult female scale is very convex and among scale insects isconspicious for this characteristic. It is widely distributed in the United States and is without muchdoubt an introduced species. 1. Aspidiotus ancylus Putn. 2. Aspidiotus camelliae Boisd. MONTANA EXPERIMENT STATION. 167. Fig. 15. The Greedy Scale Insect: a, female scale from above; b, samefrom below: c, mass of scales as appearing on bark; d, male scale; e, malescales on twig; i. female scales on twig; e and f, natural size; c, considerablyenlarged; a, b, d, greatly enlarged. (Howard, Yearbook, U. S. Dept. ofAgr„ 1894.) THE OYSTER-SHELL BARK LOUSE. The oyster-shell bark louse is the best known of any of the or-chard scales. It probobly came originally from Europe but it isnow known throtighout the world. Like the other scale insectshere discussed it is particularly adapted to distribution on nurserystock. This insect attacks a variety of food plants including apple, pear,plum, quince, hawthorn, raspberrq, currant, linden, willow, cotton-wood, poplar, wild cherry, rose, lilac , and white birch. Many ofthese it attacks so severly as to threaten their lives. The scales of the two sexes are quite different in size and appear-ance. The female scale is elongated (see a of the figure) rounded>jii the up
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