Half hours with insects . ECTS. [Packard. fringed wings expanding only a fifth of an inch. Its forewings are of a light slate gray color on their inner half, andbe3ond bright orange, enclosing two white bands, one situ-ated on the front edge, and the other arising from the inneredge, both nearly meeting in the middle of the wing, andedged externally with black. There is a very conspicuoussquare black spot near the fringe, in which is a long pencilof black hairs. Such startling contrasts of yellow andblack are seldom worn by these diminutive moths, but na-ture never outrages our notions of good
Half hours with insects . ECTS. [Packard. fringed wings expanding only a fifth of an inch. Its forewings are of a light slate gray color on their inner half, andbe3ond bright orange, enclosing two white bands, one situ-ated on the front edge, and the other arising from the inneredge, both nearly meeting in the middle of the wing, andedged externally with black. There is a very conspicuoussquare black spot near the fringe, in which is a long pencilof black hairs. Such startling contrasts of yellow andblack are seldom worn by these diminutive moths, but na-ture never outrages our notions of good taste, and thesecolors are blended in an harmonious and attractive way. Itis doubtful whether these little sac bearers ever do anymischief to the trees, and they are more interesting thaninjurious. The moth, caterpillar and case are figured on thefrontispiece of the Guide to the Study of Insects. The Apple Aplds (Fig. 141, natural size and enlarged).—The prick of a plant louse and loss of a drop or two of sap Fig. The Apple Aphis. is of little moment to an apple tree ; so is the loss of a dropof water to a pond. But nmltiply the number of lost dropsand the pond ma^^ dry up and the tree wither and die. Thevast numbers of A[)hides, often seen clustering two to threedeep on the green shoots of a favorite tree in the orchard, isa lamentable spectacle. The work to be done by these in-sects is such as, unfortunately for the gardener, to requirevast numbers. Every gap opened in their ranks, by the as- 30 Packakd.] the P0PULATI0:N of apple tree. 191 saults of the m^riad birds and insects which prey upon them,must be closed b} accessions from the youth of the colon} fertile the mothers are in means to supply this want,and with what startling precocity the new-born Aphis stepsinto the shoes of his sire, or more commonly his mother, wehave alread}^ seen. Given a colon} of, say, 1,000,000 plantlice on a choice tree, the problem before us, and it is onenature daily present
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectinsects, bookyear1881
