. Bulletin - New York State Museum. Science. INJURIOUS AND BENEFICIAL INSECTS 11 trees is punctured with many small, circular holes, made by brownish black beetles less than i inch long. The inner por- tions of the bark and sap wood are frequently filled with burrows. The parent beetles enter the bark and make burrows, on either side of which eggs are deposited, and the young work away from the main burrow. There are probably two broods annually in New York state. Treatment: burn badly infested trees. Apply carbolic soap wash to trunks and limbs in early spring. 12 Pear blight beetle (X y 1 e
. Bulletin - New York State Museum. Science. INJURIOUS AND BENEFICIAL INSECTS 11 trees is punctured with many small, circular holes, made by brownish black beetles less than i inch long. The inner por- tions of the bark and sap wood are frequently filled with burrows. The parent beetles enter the bark and make burrows, on either side of which eggs are deposited, and the young work away from the main burrow. There are probably two broods annually in New York state. Treatment: burn badly infested trees. Apply carbolic soap wash to trunks and limbs in early spring. 12 Pear blight beetle (X y 1 e b o r u s d i s p a r). The bark of affected trees is punctured with many small, circular holes made by dark brown beetles about J inch long. Inner portions of the bark and sap wood are filled with burrows. Treatment: burn badly infested trees. 13 17 year cicada (Cicada septendecim). Slit and broken twigs with wilting leaves are characteristic of the work of this insect, but unless the trees are small not much damage is done. Broods appear at intervals of 17 years. The adult may be dis- tinguished from the dog day cicada by its bright red eyes . and wing veins of the same ^ _ Fig. 11 17 year cicada color. Prevention: avoid setting out trees in last few years before cicadas are due. 14 Apple tree bark louse (Mytilaspis pomorum). Bark infested with elongated brownish scales shaped somewhat like oyster shells. The winter is passed as white eggs under old scales, the young appear about June 1. A common scale insect which sometimes occurs in large numbers, and infests many different shrubs and 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 : New York State Education Dept
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectscience, bookyear1887
