. 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. Fig. 145.—Venation of a tipulid {Tipida). (After Comstock.) Pig. 146.—Venation of a tabanid {Tabanus). {After Comstock.) AA. B. Alulets large, third joint of antennae without a style or bristle.— Tabanidce (Horse Flies), p. 252. BB. Alulets small; branches of Radius crowded together near the costal —Straliomyiidce (Soldier Flies). Antennae of four or five segments but the third joint not ringed. B. Antennae lon
. 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. Fig. 145.—Venation of a tipulid {Tipida). (After Comstock.) Pig. 146.—Venation of a tabanid {Tabanus). {After Comstock.) AA. B. Alulets large, third joint of antennae without a style or bristle.— Tabanidce (Horse Flies), p. 252. BB. Alulets small; branches of Radius crowded together near the costal —Straliomyiidce (Soldier Flies). Antennae of four or five segments but the third joint not ringed. B. Antennae long, clavate, 4-jointed; branches of Radius curving toward costal margin.—Midaidce (Midas Flies).. 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
