. 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. 344 ECONOMIC ENTOMOLOGY BB. C. Tibia of forelegs with two apical spurs; female with saw-like ovipositor.—Tenthredinida (Saw-flies) (Fig. 228), p. 345. CC. Tibia of forelegs with one apical spur; female with ovipositor fitted for boring.—Siricidce (Horntails), p. 350. Abdomen joined to thorax by slender petiole or stalk. C. Fore wings \vith few or no cross veins, hence with no closed cells. D. Ovipositor issuing before
. 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. 344 ECONOMIC ENTOMOLOGY BB. C. Tibia of forelegs with two apical spurs; female with saw-like ovipositor.—Tenthredinida (Saw-flies) (Fig. 228), p. 345. CC. Tibia of forelegs with one apical spur; female with ovipositor fitted for boring.—Siricidce (Horntails), p. 350. Abdomen joined to thorax by slender petiole or stalk. C. Fore wings \vith few or no cross veins, hence with no closed cells. D. Ovipositor issuing before the apex of the abdomen; anten-. 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
Size: 2242px × 1115px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
