. Bulletin of the Department of Agriculture. Agriculture. 8 BULLETIN 421, U. S. DEPARTMENT OP ^AGRICULTURE. irniii of a disiiiict ck'vatioii on top of head between eyes. Head light with lii^ht. yellowish lon^nludinal 8trii)e on eaeh side between eye and ocelli. Maxillary paljti three-segnuMited, short, small; lalnal palpi minute. Antennae eight-segmented, slender, nearly three times as long as head: relative lengths of segments as follows: 1 2 8 4 5 G 7 8 5 16.(5 11 Segment one cylindrical, three-fourths as l)road as two, which is 1 )arrel-shaped and annu
. Bulletin of the Department of Agriculture. Agriculture. 8 BULLETIN 421, U. S. DEPARTMENT OP ^AGRICULTURE. irniii of a disiiiict ck'vatioii on top of head between eyes. Head light with lii^ht. yellowish lon^nludinal 8trii)e on eaeh side between eye and ocelli. Maxillary paljti three-segnuMited, short, small; lalnal palpi minute. Antennae eight-segmented, slender, nearly three times as long as head: relative lengths of segments as follows: 1 2 8 4 5 G 7 8 5 16.(5 11 Segment one cylindrical, three-fourths as l)road as two, which is 1 )arrel-shaped and annulated; remaining segments narrower than these two and more elongated; three and four fusiform; seven and eight nearly cylindrical; eight very slender; one, two, and three nearly concolorous, light yellow with tinge of gray or ])rown on one and two; four and five light yellow in basal half, shading to light brown on a]>i(al half: six,. Fig. 7.—Adult female of sugar-beet llirips. Enlarged. (Original.) seven, and eight uniformly chocolate brown; segments two to five annulated: spines slender, light colored. Prothorax transverse^, about one-fifth wider than the head, twice as wide as long and shorter than the head; aides rounded; without conspicuously large spines. Mesothorax about one and two-thirds times as wide as the head: anterior angles prominent: meso- notumwith deep incision on posterior margin: metanotum with four spines standing in a square near its Wings present, long, al^out one-sixteenth as broad as long; fore wings broadened at haae, with two longitudinal veins, the second branching from the first not far from the l)ase of the wing. Spines upon veins of fore wing stout, dark colored, and set at uniform distances; costa bears seventeen to twenty, fore Aein fourteen to seventeen, hind vein ten to thirteen, scale three to five besides pair at its tip; spines on l)asal fourth of wing are light colored, smaller, and much less conspicuous; anterior fringe on b
Size: 1949px × 1282px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear