. An annotated list of the important North American forest insects. Forest insects. THE ELM LEAF BEETLE. 7 bushel. The ehii leaf beetle often occurs with the two-spotted lady beetle in dwellings, simply because they both seek the same kind of a place for hibernation. Correspondents frequently send both species to the writer and desire to know if they are not in some way responsible for the injuries to their carpets. There is, of course, no relationship or similarity in food habits of the three species. The lady beetle is predatory, and in the larval stage destroys numbers of plant lice, and th
. An annotated list of the important North American forest insects. Forest insects. THE ELM LEAF BEETLE. 7 bushel. The ehii leaf beetle often occurs with the two-spotted lady beetle in dwellings, simply because they both seek the same kind of a place for hibernation. Correspondents frequently send both species to the writer and desire to know if they are not in some way responsible for the injuries to their carpets. There is, of course, no relationship or similarity in food habits of the three species. The lady beetle is predatory, and in the larval stage destroys numbers of plant lice, and therefore should never be destroyed. The elm leaf beetles should, of course, be killed wherever thev are found. DESCRIPTION. The eggs are bright yellow in color, bottle-shaped, and resemble the eggs of the Colorado potato beetle, but are smaller. They are fastened vertically to the under side of the leaf in clusters of from five to twenty-five arranged in two or three irregular rows. When first hatched, the larva is dark or nearly black, covered with tubercles bearing black hairs. As the larva increases in size it molts several times and on becoming full-grown is about one-half inch long, dull yellow in color, with a pair of longi- tudinal black stripes along the back. Head, legs, lateral tuber- cles and two rows of small tubercles between the dorsal stripes are black. The tubercles also bear black hairs. The pupa is about one-fourth inch in length and bright orange yellow in color, with black hairs or spines. It is not enclosed in an earthen shell to protect it, but is found at the base of the tree perfectly naked and wholly unprotected. The adult beetle is light yel- low in color when it first emerges, but soon takes on a duller hue, and finally becomes a dull olive green. An indis- tinct black stripe extends from the base to the extremity of each wing cover just inside of the margin. Small black spots or markings on the pronotum of the thorax vary greatly in size and shape. Le
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Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
