. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Fig. 5.—Third-stage nymph of sugar-beet thrips. En- larged about 40 diameters. (Original.) Fig. 6.—Fourth-stage nymph of sugar-beet thrips. En- larged about 40 (Original.) one sublaterally. The first segment is without setae, and 9 bears two pairs on lateral margin; 10 bears only one pair. Legs translucent white, bearing numerous short spines, with one long spine on the tibise. THE ADULT. The adult female (fig. 7) is described by Hinds as follows:, Heliothrips femohalis Reuter. Female.—Length mm. (


. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Fig. 5.—Third-stage nymph of sugar-beet thrips. En- larged about 40 diameters. (Original.) Fig. 6.—Fourth-stage nymph of sugar-beet thrips. En- larged about 40 (Original.) one sublaterally. The first segment is without setae, and 9 bears two pairs on lateral margin; 10 bears only one pair. Legs translucent white, bearing numerous short spines, with one long spine on the tibise. THE ADULT. The adult female (fig. 7) is described by Hinds as follows:, Heliothrips femohalis Reuter. Female.—Length mm. ( to mm.); width of mesothorax about one-fourth the body length. General color dark brown to yellowish brown, lighter at extremi- ties. Entire surface of body weakly but plainly reticulated. Head two-thirds as long as Ijroad, widest in front; anterior margin depressed at ^nion of antennae; vertex carinated; bases of antennae separated by a prominence as high and nearly as wide as the first antennal segment; two transverse wrinkles near ba<^:k of head more prominent than the others; Ijehind the anterior one of these two the longitudinal parts of the reticulations Ijecome very faint,; sjnnes upon head scat- tering and small. Eyes (juite large, [trotruding anteriorly, coarsely granulated; eyea and margins of ocelli bright, dark red by reflected light; ocelli placed on sides. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.


Size: 1079px × 2317px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture