. Class book of economic entomology [microform] : with special reference to the economic insects of the northern United States and Canada. Insect pests; Entomologie; Entomology; Insectes nuisibles, Lutte contre les; Insect pests; Insectes nuisibles. Fig. 145.—Venation of a tipulid {Tipula). {After Comstock.) Pig. 146.—Venation of a tabanid iTabatius). (.After Comslock.) B. Alulets large, third joint of antenna without a style or bristle.— Tabatlidx (Horse Flies), p. 2%i. BB. Alulets small; branches of Radius crowded together near the costal margin.—5(ra/ii)myiK(ii (Soldier Flies). AA. Antenna
. Class book of economic entomology [microform] : with special reference to the economic insects of the northern United States and Canada. Insect pests; Entomologie; Entomology; Insectes nuisibles, Lutte contre les; Insect pests; Insectes nuisibles. Fig. 145.—Venation of a tipulid {Tipula). {After Comstock.) Pig. 146.—Venation of a tabanid iTabatius). (.After Comslock.) B. Alulets large, third joint of antenna without a style or bristle.— Tabatlidx (Horse Flies), p. 2%i. BB. Alulets small; branches of Radius crowded together near the costal margin.—5(ra/ii)myiK(ii (Soldier Flies). AA. Antenna of four or five segments but the third joint not ringed. B. Antenna long, clavate, 4-jointed; branches of Radius curving toward costal matgia.—iiidaida (Midas Flies).. Pig. 147.—Venation of Dixa. {After Comstock.) Pig. 148.—Venation of an asilid {Erax). {After Comstock.) AAA. Antenna of three segments; Radius four-branched. B. Vertex of head hollowed out between the eyes; palpi present Asilida (Robber Flies). BB. Vertex of head not hollowed out; alulets small; beak prominenl Bomhyliida (Bee Flies). Chief Families of the Cydorrhapha (Figs. 151 and 152): A. Adults non-parasitic; maxilla covered by upper lip; Radius 3-branched. B. With a spurious longitudinal vein between Radius and Media, ir : convex between the antenna.—5yf/i*WiF (Flower Flies), p. 250-. 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 : P. Blakiston's Son
Size: 3148px × 794px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectentomology, bookyear1
