. 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. io8 ECONOMIC ENTOMOLOGY Genera of the Tettig'ina: A. Antenna; la-jointcd and pronotum rounded.—Batrachidea, AA. Antennffi i3~i4-iointed; pronotum horizontal,—Tellix. AAA. Antenna: 22-jointed; pronotum horizontal.—Tettigidea, (For species see Blatchley's Ortkoptera of Indiana.) Genera of the Acridina: A. Wings as long or longer than the abdomen. B.
. 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. io8 ECONOMIC ENTOMOLOGY Genera of the Tettig'ina: A. Antenna; la-jointcd and pronotum rounded.—Batrachidea, AA. Antennffi i3~i4-iointed; pronotum horizontal,—Tellix. AAA. Antenna: 22-jointed; pronotum horizontal.—Tettigidea, (For species see Blatchley's Ortkoptera of Indiana.) Genera of the Acridina: A. Wings as long or longer than the abdomen. B. Pronotum sloping from median carina; extremity of abdomen in mah not swollen.—Acridium or Schistocerca. BR. Pronotum flattened; extremity of abdomen in males Fig. 62.—Abdomen of male Melanoplus biviltalus. A, lateral view; B, dorsal vif» C, ventral view. {After Lugger.) Species of Acridium: A. Size large; antennae rather short.—A. amcricana. AA. Size medium; antennie longer. B. Color yellowish-brown or olive-green.—A, alulacca. BB. Color rusty-brown; no yellowish stripe on dorsum.—A, rubiginon Species of Melanoplus: A. Apex of last ventral segment of male distinctly notched (Fig. 63) B. Length of body to tip of wing-covers 29-35 mm.—M. spretus. BB. Length of body to tip of wing-covers 23-26 mm.—M. atlanis. AA. Apex of last ventral segment of male entire, or at least obscurely notcheil B. Anal cerci enlarged at apex.—M. bivillatus. BB. Anal cerci tapering. C. Species of medium size; anal cerci much narrowed, but withm i notch.—M. femur-ruhriim. CC. Species oi lar^e siice; unal ccrti suddenly nairuwcd, makih prominent right-angled notch on lower side.—M. di_fferenti<ili. 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. Philadelph
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectentomology, bookyear1
