134 



or greeuisli. others much darker, and of a bluisli-black hue. The head is 

 black, and there is a broad, dusky or blackish stripe down the back, along each 

 side is a yellowish band, speckled more or less with black. The body is 

 covered with long straight hairs, grouped in tufts, arising from small black 

 or orange-yellow protuberances, of which there are a number on each segment. 

 The moth is of a milk-white colour, without spots. When expanded, the 

 wings measure about IVi inches across. From their birth the web-spinning 

 habits of the larva; promptly leads to their detection, and as soon as seen they 

 should be removed by cutting ofC the twig or branch and destroying it. As 

 they remain constantly under the web for so long a period, the removal of the 

 branch insures in most instances the destruction of the whole colony. See 

 also remedy recommended for Apple-Tree Tent Caterpillar. 



Tussock Moth {Orpyia antUiua). 



Feeding upon the leaves of fruit .■ind other trees. When mature, the 

 caterpillars are very pretty, having bright red heads, and yellowish bodies, 

 bearing a series of dense, abruptly cut-off brushes on the middle of their 

 backs, with two pencils of black hair on the anterior, and one on the posterior 

 of each. 



The eggs from which the caterpillars hatch are often noticed in winter 

 on dead leaves which are fastened to the tree, with usually the empty cocoon 

 attached. The injury from these pests is best prevented by the destruction of 

 these egg masses during the winter. 



The caterpillars may be killed by using tlie Paris green spray, or. if nut 

 tixi numerous, picking might be resorted to. 



Eed-Humpkd Caterpill.\r {CEilcmasla coiiciiuni). 



(Fig. :iS.) (Fig. 39.) 



This caterpillar feeds upon tlic foliage of aiiple and other fruit trees. Us 

 head is red, and there is a hump on its b.-iek of the same colour, on the fourth 

 ring or segment ; the body is marked lengthwise Ijy slender black, yellow and 

 white lines, and has two rows of black prickles along the back and other 

 shorter ones upon the sides, from each of which there arises a flue hair. The 

 hinder segments taper a little, and are always elevated when the insect is not 

 crawling. It measures, when full grown, about li/i inches in length. 



I>r. Fletcher, under date of 5th September, 1906. sa.vs: "This caterpillar 

 has been rather more abundant than usual in all parts of Canada this year, but 

 although it appears to be a very bad pest on account of the caterpillars feed- 

 ing in large clusters, as a matter of fact it is not an important enemy of the 

 aii|ili'. because the whole colony can be cut off and destroyed at once, whenever 

 their iiresence is detected by their in.iuries." 



