. Bulletin - New York State Museum. Science. INJURIOUS AND BENEFICIAL INSECTS 21. Fig. 29 Elm leaf beetle, adult (reduced from How- ard, U. S. dep't agr., Year- book 1895) turn brown. The yellowish, black striped beetles, about i inch long, appear in early spring and lay eggs in May. The grubs feed in June, changing to yellow pupae the latter part of the month. A second brood occurs in July and extends into September. Known to occur in this state on Long Island, in the Hudson river valley north to Schuylerville, and in a few places in western central New York. This pest prefers European elms,
. Bulletin - New York State Museum. Science. INJURIOUS AND BENEFICIAL INSECTS 21. Fig. 29 Elm leaf beetle, adult (reduced from How- ard, U. S. dep't agr., Year- book 1895) turn brown. The yellowish, black striped beetles, about i inch long, appear in early spring and lay eggs in May. The grubs feed in June, changing to yellow pupae the latter part of the month. A second brood occurs in July and extends into September. Known to occur in this state on Long Island, in the Hudson river valley north to Schuylerville, and in a few places in western central New York. This pest prefers European elms, but when numerous will seriously injure American elms. Treatment: spray the young foliage of in- fested trees with poison early in May to kill the beetles. The spray must he throtvn on the under surface of the leaf in order to kill the grubs. Kill larvae and pupae on and near trunks of the trees either with hot water, with kerosene emulsion or by sweeping up and burning. 37 Spiny elm caterpillar (Euvanessa antiopa). Large black, red marked, spiny caterpillars about 2 inches long may frequently be seen in Jun6 feeding on the leaves of elm, willow and several other trees. The parent butterfly is a handsome purplish insect with yellow bordered wings. There are two annual generations in New York state. Treatment: remove the gregarious cater- pillars and crush them or spray the in- fested limbs with poison. 38 Elm bark louse (Go s s y p a r i a u 1 m i). The adult females in June appear like clusters of small lichens on the under side of the smaller limbs of European elms. The young emerge in July. This in- sect appears to be generally distributed in the Hudson river valley, and will probably soon make its way to. 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 New York State Museum; New York State Museum. Albany
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
