. 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. a '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. (Ratzeburg.). Fig. 222.—Shot-hole horer {Anisandrus Pyri). {After Swaine, Bui. 14, Bur. Can.) holes in healthy limbs from which much sap exudes following season. Hibernates. Eggs.—Small, white; 80 to 160; laid in niches along sides of egg- tunnel or brood
. 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. a '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. (Ratzeburg.). Fig. 222.—Shot-hole horer {Anisandrus Pyri). {After Swaine, Bui. 14, Bur. Can.) holes in healthy limbs from which much sap exudes following season. Hibernates. Eggs.—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 oflf the egg-tunnel. Pupa.—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 {.Inisandnis pyri Peck).—This borer cuts round, black tunnels deep into the wood; in small branches or stems one divi- sion of the tunnels partially girdles the wood (Fig. 222). Adult.—Cylindrical, black, 'g inch 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, 1864-1927. Philadelphia : Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
