INSECTS INJURIOUS TO THE HOP-PLANT 275 



" about two inches in length, fleshy, unwieldy, and very slow in 

 their movements; they are of a dirty white color, speckled with 

 fine, brownish elevated tubercles, each furnished with a single 

 stout hair; the head is brownish and corneous, as is also the top 

 of the first segment." (I.e.) 



The larvae now transform to pupse in rough cells, close to the 

 roots which they have infested, and the adult moths emerge 

 during August or September, or the following spring. The 

 adult moths are found, upon close examination, to be most 

 beautifully marked, though not of a striking appearance at first 

 sight. " The general color is a rosy brown, paler at the extremity 

 of the wings. The darker central portion is shaded with dark 

 velvety bronze and marked with two dull-yellow spots. The fore- 

 wings are divided into three areas by narrow oblique transverse 

 lines, edged outwardly with pink. The hind-wings are paler in 

 color, crossed in the middle by a slightly darker line." Howard I.e. 



Remedies. Two points in the life history of the insect afford 

 opportunity for its control. The first is when the young larva? 

 are still in the tips and can easily be crushed by the fingers when 

 tying the vines. " Muffleheads " should always be picked off 

 and destroyed. 



Early in June when the larvae have left the inside of the vines 

 it is well to remove all the soil from the base of the vine, down 

 to the junction with the old root. The larvae, which will not 

 feed above ground, will go to the old roots, to which they will 

 do but little injury. The roots should be left thus exposed for 

 about a week. A handful of mixture of coal and wood ashes or 

 ammoniated phosphate should then be applied to each and the 

 plants hilled high. The plant will now send out new rootlets 

 from the main root, and is able to secure necessary nourishment 

 through them. 



The Hop-louse * 



Like many another aphid the Hop-louse has a most interest- 

 ing life history, which has been fully ascertained in but recent 

 years. During the winter the small oval black eggs may be 

 * Phorodon humuli Schr. Family Aphididce. 



