. Injurious insects : how to recognize and control them . Insect pests; Insect pests. 146 PESTS OF GARDES AXD FIELD CROPS out from these quarters early in the spring, and begin la^"ing eggs as soon as food plants are avail- able. I'sually the over- "nintering beetles Uve and continue laying eggs for a considerable period. The grub en- ters the ground to pu- pate, when it has be- come full grown. There are two generations an- nually. Poisoning by means of Paris green and hme, or lead arsenate, is the simplest and best Fig. 144. â Eggs of the Colorado Potato-beetle, remedy. Use a rathe
. Injurious insects : how to recognize and control them . Insect pests; Insect pests. 146 PESTS OF GARDES AXD FIELD CROPS out from these quarters early in the spring, and begin la^"ing eggs as soon as food plants are avail- able. I'sually the over- "nintering beetles Uve and continue laying eggs for a considerable period. The grub en- ters the ground to pu- pate, when it has be- come full grown. There are two generations an- nually. Poisoning by means of Paris green and hme, or lead arsenate, is the simplest and best Fig. 144. â Eggs of the Colorado Potato-beetle, remedy. Use a rather Slightly enlarged. Original. i^^.^^-^. ^^^^ ^nd apply early, as soon as the potato tops are a few inches high, repeating as The Three-hned Potato Beetle (Lema trilineaia Ohv.) Injury by tliis species is about the same as that done liy the Colorado potato-l:>eetle. The eggs are laid along the midrib of the leaf. The larva covers itself with a mass of excre- ment. The adult is a hand- some beetle, its body striped with light yellow and black. T. 1 ^, . ,. 1 1 -f"i<^- 1-^5. â The Three-lined Potato its length 1$ a litt e more than -R,ori- r i i j » i â " Beetle. Enlarged and natural size. one tlurd of an inch. There 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 O'Kane, Walter Collins, b. 1877. New York : The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1912
