. Annual report. Fruit-culture. 138 STATE POMOLOGICAL SOCIETY nursery stock and spreads through winged forms of the insect and the agency of birds whicli carry the young hce on their feet. It is not uncommon to find apple trees as badly infected. Howard, Kntoniological Division, U. S. Dept. of Agriculture, 1894. THE OYSTER-SHELL BARK LOUSE. {TrytUaspls pomorum.) a, female scale from below, showing eggs; 6, same from aliove—greatly en- larged; c, female scales; rf, male scale—enlarged (original); e, male scales on twig —natural size. as the branch I show you. This species is fully considered an
. Annual report. Fruit-culture. 138 STATE POMOLOGICAL SOCIETY nursery stock and spreads through winged forms of the insect and the agency of birds whicli carry the young hce on their feet. It is not uncommon to find apple trees as badly infected. Howard, Kntoniological Division, U. S. Dept. of Agriculture, 1894. THE OYSTER-SHELL BARK LOUSE. {TrytUaspls pomorum.) a, female scale from below, showing eggs; 6, same from aliove—greatly en- larged; c, female scales; rf, male scale—enlarged (original); e, male scales on twig —natural size. as the branch I show you. This species is fully considered and illustrated in the report of the Maine Experiment Station 1888 p. 157. We are not a^vare that much efifort is made to check it. It does not usually kill the trees, but must be a great drain upon them dwarfing the shoots and fruit. THE ELiM-TREE llAKK-LOUSE. Lccaiiiiun Caryac, Fitch var. Caiiadciisc, Cockerell. This is a bark louse of a mahogany brown color and hemispherical shape. It is very abundant upon elm trees all over the State and must do much damage. The branches in spring are sometimes. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Maine State Pomological Society. Augusta
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Keywords: ., bookcentury1800, bookdecade1870, bookpub, booksubjectfruitculture
