. 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. k 'b Fig. 221.—Galleries of the fruit tree bark beetle on twig under bark: a, a, main galleries; b, b, side or larval galleries; c. c, pupal cells. Natural size. (Ralzeburg.). Fig. 222.—Shot-hole horer {Anisandrus pyri). {After Swaine, Bui. 14, En,. Bur. Can.) holes in healthy limbs from which much sap exudes following season. Hibernates. -Egg-J.—Small, white; 80 to 160; laid in niches along sides of egg- tunnel or bro
. 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. k 'b Fig. 221.—Galleries of the fruit tree bark beetle on twig under bark: a, a, main galleries; b, b, side or larval galleries; c. c, pupal cells. Natural size. (Ralzeburg.). Fig. 222.—Shot-hole horer {Anisandrus pyri). {After Swaine, Bui. 14, En,. Bur. Can.) holes in healthy limbs from which much sap exudes following season. Hibernates. -Egg-J.—Small, white; 80 to 160; laid in niches along sides of egg- tunnel or brood chamber in spring. Hatch in 17-20 days. Larva.—White; head yelowish, mouth-parts dark; mature in 25-30 days. Form galleries off the egg-tunnel. Pup(B.—Formed in enlarged end of larval galleries; adults appear through holes cut in the bark above the pupal cells; duration 4-6 days. Shot-hole Borer {Anisandrus pyri Peck).—This borer cuts round, black tunnels deep into the wood; in smah branches or stems one divi- sion of the tunnels partially girdles the wood (Fig. 222). Adult.—Cylindrical, black, 3-8 i^^ch long; antennal club globular. 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-. Philadelphia, Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
