. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 157 occurs mainly in the South. Over twenty broods have been recog- nized and delimited. Control.—Prune off affected twigs in July and burn before the hatch- ing of the eggs; allow hogs the run of infested land during April and May; avoid pruning the orchard the year before a cicada year. Natural Enemies.—A digger wasp {Megastizus speciosus), egg parasites (cecidomyiid a
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. CLASSIFICATION AND DESCRIPTION OF COMMON INSECTS 157 occurs mainly in the South. Over twenty broods have been recog- nized and delimited. Control.—Prune off affected twigs in July and burn before the hatch- ing of the eggs; allow hogs the run of infested land during April and May; avoid pruning the orchard the year before a cicada year. Natural Enemies.—A digger wasp {Megastizus speciosus), egg parasites (cecidomyiid and chal- cid); mites; the Enghsh sparrow, catbird, robin, etc. The Dog-day Harvest-fly {Cicada tibicen Linn.).—Often oc- curs but is not of much import- ance economically. It is black and green, and white powdered underneath. Membracid^ (Tree-hoppers) Buffalo Tree-hopper {Ceresa buhalus Fab.).—(Consult Circ. 23, Div. Ent., U. S. Dept. Agric.) This bug is a common pest of or- chards and shade trees feeding on the sap of apple, maple, etc. It injures the trees by making longi- tudinal incisions in the bark, which become points of weakness (Fig. 100). Adult.—A grass-green bug, % inch long, with the pronotum greatly enlarged, and expanding laterally into two horns and pos- teriorly into a long point. July- September. Eggs.—Dirty-whitish, cylindrical, slightly curved, tapering toward outer end; }{q inch long. Laid in the bark in batches of 6-12 in two. Fig. 100.—Twigs showing egg punc- tures of the Buffalo 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 Lochhead, William, 1864-1927. Philadelphia : Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
