259 



moths, and Ist-lOth August for the second, are the best. On cherry- 

 trees, it is usually necessary to spray for sawflies, both the first and 

 second generations. If lead arsenate be used, it should be applied 

 to both surfaces of the leaves ; a great many larvae may thus be 

 poisoned, but it may sometimes be necessary to make a special spring 

 application. It is usually considered that more good can be secured 

 from an application made on 1st September ; this applies to all kinds 

 of fruit trees. Three enemies of E. ocellana are recorded : an 

 undetermined Carabid beetle found feeding on the larvae ; an 

 undetermined species of Triphleps ; and a mite, Anystis agitis, Banks. 

 The paper concludes with descriptions of experiments made to 

 ascertain whether the spray solutions employed could be used against 

 the hibernating stage, from which it is thought that the oil sprays, as 

 ordinarily used, are not efficient against the bud moth. 



Wilson (H. F.). The Fruit-Tree Leaf Roller, Archips argyrospila, 

 Walker ; pp. 109-112, 3 figs. 



Observations indicate that in Oregon there is but a single generation 

 of A. argyrospila and that the life-history is practically the same as 

 in New York State. This insect [see this Review, Ser. A, i, p. 225 ; 

 ii, p. 14] has not yet been so serious a pest in Oregon as in Colorado, 

 California and New York. In Oregon, most damage is done to the 

 fruit, in \vhich large holes are sometimes eaten by the larvae. As 

 the majority of the egg-masses are formed on the smaller branches 

 and twigs, a great many are disposed of by winter pruning, though 

 enough are sometimes left on the trees to cause serious trouble, and it 

 may become necessary to make regular spray applications. About 

 the time the buds are opening in spring, a 10 per cent, solution of crude 

 oil emulsion should be applied ; if the eggs are found to be hatching 

 earlier, it will be necessary to make the application earlier. Should 

 the oil for any reason fail to kill the eggs, an application of arsenate of 

 lead, 2 to 50, [? 2 lb. to 50 U.S. gallons] should be made just before 

 the blossoms open. 



Wilson (H. F.). The Peach and Prune Twig Borer, Anarsia lineatella, 

 Zeller ; pp. 113-118, 6 figs., 1 table. 



Weldon has already suggested [see this Review, Ser. A, ii, p. 663] 

 that there is but a single, long-drawn-out generation of A. Uneatella 

 each year ; this corresponds with the conditions at Corvallis, but in 

 Eastern and Southern Oregon there appear to be two or three 

 generations. The insect bores down the centre of the twigs, and later, 

 into the fruit, and if the larvae are abundant, the damage may cause 

 as high a loss as 75 per cent, of the crop. The nature of the injury 

 both to twigs and fruit is described at length, as well as the various 

 stages. In the neighbourhood of Corvallis, larvae may be found in 

 the hibernating burrows from late June till April or May of the year 

 following. Shortly after hatching the young larvae crawl down ta 

 the rough bark in the crotches of twigs and limbs, and burrow down 

 into the bark, apparently feeding as they go. During the late summer 

 and winter months the larvae do not feed. Upon leaving the burrows 

 in spring, the larvae crawl to the base of a bud or between the opening 

 leaves and begin boring down the centre of the twig, wandering from 



