. A manual of injurious insects [microform] : with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit : to which is appended a short introduction to entomology. Insect pests; Agricultural pests; Entomology; Insectes nuisibles, Lutte contre les; Ennemis des cultures, Lutte contre les; Entomologie. CORN Tnnrps. 07 Corn Thrips. Tkrips m-ealiim, Ilalitlay ; T. physapus, 1-4 ComJhripn Thrips cerealum (female), nat. size and maRnifiod ; 0—», I otato rhnps, :f. minutiasiim, nat. size and magnified. The attack of Corn Thrips is one of those which often do
. A manual of injurious insects [microform] : with methods of prevention and remedy for their attacks to food crops, forest trees, and fruit : to which is appended a short introduction to entomology. Insect pests; Agricultural pests; Entomology; Insectes nuisibles, Lutte contre les; Ennemis des cultures, Lutte contre les; Entomologie. CORN Tnnrps. 07 Corn Thrips. Tkrips m-ealiim, Ilalitlay ; T. physapus, 1-4 ComJhripn Thrips cerealum (female), nat. size and maRnifiod ; 0—», I otato rhnps, :f. minutiasiim, nat. size and magnified. The attack of Corn Thrips is one of those which often does a great deal of harm very quietly, and without the cause of the mischief being suspected, on account of the minute size of the insect, which is scarcely more than the sixteenth of an inch long. ^ Thrips are well known to gardeners as being troublesome in frames, and they are also generally well known as the little black speck-like insects often seen wriggling actively about in flowers; often too, by the annoyance they cause in hot weather by settling on the face, where they twist in all direc- tions, holding on by their bladder-tipped feet, whence they take their German name of " ; 1 ^^*^ *^® ^¥^P,<^/ ^ magnifying-glass the perfect insect will be found to be blackish, a little less than one line long the abdomen long, narrow, and smooth, with the tip bristly • the male without wings. The female has two pairs of Ions narrow wings, fringed with long hairs, and curving outwards, so that when they are laid straight along the body at rest the tips are apart. The feet are very short and stumpy, without Claws. The two earlier stages of grub and pupa much resemble the perfect msect, excepting that the grub is deep yellow, and has no wings; the pupa is of a paler yellow, with whitish cases for the wings which are not yet developed. ^ The above figure shows the female Corn Thrips at rest, and ^"^AA T^ l^ ^^.?S%.i^^ *^® fig^^e of tlie Potato Thrip
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectentomology, bookyear1
