207 



The results showed that blight developed only in the tender, succulent 

 growth on the twigs, and that Aphids can and do inoculate trees with 

 the bacteria of fire-blight. 



Lo\VRY (Q. S.)- An Outbreak of the Eight-spotted Forester, Ahjpia 

 octomaculata, F., in New Haven, Conn. — Jl. Econ. Entom., 

 Concord. N.H., x, no. 1, February 1917, pp. 47-48. 



In July 1916 the caterpillars of the Agaristid, Alypia odomaculata, 

 were found in thousands defoliating grape-vines and Virginia creeper 

 within a radius of about a mile. This moth is rarely found except in 

 city gardens, but it is evident from the outbreak in New Haven that 

 considerable damage and financial loss would result if it became 

 abundant in commercial vineyards. It also feeds on the common 

 barberry, Berheris vulgaris, and roses. From larvae collected in July, 

 two Tachinid parasites emerged and were identified as Winthemia 

 quadripustulata, F. It remains to be seen whether this pest will 

 occur in the same locality another year and whether the parasite will 

 keep it in check. 



Becker (G. G.). Notes on the Peach-tree Borer [Sanninoidea exitiosa). 

 — Jl. Econ. Entom., Concord, N.H., x, no. 1, February 1917, 

 pp. 49-59. 



These notes deal with the pupal and adult stages ot Aegeria exitiosa^ 

 Records are also given of observations on the stages of emergence of 

 the adults. The period from the time when the larva spins the cocoon 

 until the moth emerges, ranges from 18 to 30 days, darkness having 

 the effect of retarding the process. A chart is given illustrating the 

 emergence of the insect during the period June to October in the years 

 1910, 1912 and 1913, the dates of maximum emergence lying between 

 the 27th August and the 8th September. Males and females were 

 found to occur in about equal numbers. About 50 per cent, of the 

 eggs were deposited at the base of the peach tree, 34 per cent, a little 

 higher up, the rest on leaves, twigs, etc. The difiiculties in the way 

 of mechanical control by tree protectors are therefore obvious. 



Felt (E. P.). "Side Injury" and Codling Moth Control.— JZ. .Econ. 

 Entom., Concord, N.H., x, no. 1, February 1917, pp. 60-63. 



Side injury is produced by late-hatching larvae of the codling moth 

 [Cydia pomonella] entering the smooth side of the apple, forming a 

 circular gallery just under the skin, and then abandoning this attack 

 and migrating usually to the blossom end of the fruit. Investigation 

 shows that there is a fairly constant ratio between the total of infested 

 fruit and the apples showing side injury. The development of side 

 injury is apparently dependent upon the deposition of eggs when the 

 apples have grown to an inch or so in diameter. Experiment shows 

 that the spraying just after blossoming is the best control for this, but 

 further data are necessary before an effective remedy is found. 



In the course of the discussion following this paper, Mr. Siegler gave 

 some further particulars of the codling moth trap which has already 

 been described [see this Review, Ser. A, v, p. 113]. Experiments show 

 that this trap apparently attracts as many larvae as the ordinary 

 cloth band, while its advantage over this method is obvious. 



