Annual report of the Maine Agricultural Experiment Station . Fig. 4. a, female, scale removed; b, cluster of scales; c, femalescale; all greatly enlarged. (After Felt.) The female scale is circular in outline, grayish or blackishin color, and when examined under a lens will be seen to besomewhat raised above the bark especially in the center wherethere is a little prominence. When the scale is somewhat rubbedthe center portion appears yellowish, around which the con-centric circles, representing lines of growth, may be seen (, c). The full grown male scale is elongated, the prominencenear
Annual report of the Maine Agricultural Experiment Station . Fig. 4. a, female, scale removed; b, cluster of scales; c, femalescale; all greatly enlarged. (After Felt.) The female scale is circular in outline, grayish or blackishin color, and when examined under a lens will be seen to besomewhat raised above the bark especially in the center wherethere is a little prominence. When the scale is somewhat rubbedthe center portion appears yellowish, around which the con-centric circles, representing lines of growth, may be seen (, c). The full grown male scale is elongated, the prominencenear one end and the lines of formation eccentric instead ofconcentric. If the scale be lifted by means of a needle, therewill be seen a little yellowish body; the insect proper (fig. 4, a).The newly born insect of both sexes possess eyes, legs, antennaeand mouth parts, and crawl about for a few hours upon a suitable place is found they settle, insert their longbeaks through the bark and begin to suck the plant juice. Thescale begins to form even be
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectagriculture, bookyear
