. A manual of injurious insects 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 . )!liars feed amongst roots, the best remedy isto examine these carefully, if the plants are found to be tiag-ging without obvious cause. From the large size of the cater-pillars they are easily seen, and can be taken out by hand anddestroyed ; and if there is reason to suppose they are present, 134 HOP. it is well to have a stock here and there examined throughoutthe ground when the plants are dressed in the sp
. A manual of injurious insects 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 . )!liars feed amongst roots, the best remedy isto examine these carefully, if the plants are found to be tiag-ging without obvious cause. From the large size of the cater-pillars they are easily seen, and can be taken out by hand anddestroyed ; and if there is reason to suppose they are present, 134 HOP. it is well to have a stock here and there examined throughoutthe ground when the plants are dressed in the spring. Also, as the moths frequent grassy places, and the cater-pillars feed on the roots of the Burdock and of the commonNettle, it would be very desirable to clear off these large weedsand also patches of neglected Grass which give harbourage byday to the moths. Hop vine Snout Moth. PliraUs rostralis, Linn, ; tlypena rustralis, Stephens,. 1, caterpillar ; 2, chrysalis ; 3 and 4, moth. The caterpillars of this moth injure the Hop by feeding onthe leaves. They are of a pale green colour, with clearerspots, and a whitish line on the sides and back; slender inshape and gradually smaller towards the head, and of the sizefigured above; and are distinguishable by having only threepairs of sucker-feet (in addition to the true feet on the ringsnext the head), and the pair of sucker-feet at the end of thetail. When full-fed the caterpillar draws a leaf partly together,and commonly changes to the chrysalis in a light cocoonwhich it spins within the folds. The moth, which appears in June and July, or earlier, israther more than an inch in the spread of the wings, and isvariable in colouring. In well-marked specimens the forewings are greyish brown, darker from the base to about themiddle, with a J^igzag blackish streak across near the tip, andsome raised tufts ot black scales about the centre ; the hinderpart of the wings is pales
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Keywords: ., bookcentury1800, bookdecade1890, bookidmanualofinju, bookyear1890
