309 



may be advisable to use broader ones of 11 or more inches width. 

 Double bands are also very effective where the infestation is very 

 heavy. 



Banding was found to be effective against Porthetria dispar, L. (gipsy 

 moth), Nygmia phaeorrhoea, Don. {Eiiproctis chrysorrhoea) (brown-tail 

 moth), Hemerocampa leucostigma, S. & A. (white-marked tussock 

 moth), Notolophus antiqiia, L. (rusty tussock moth), Malacosoma 

 disstria, Hb. (forest tent caterpillar), Halisidota tessellaris, S. & A. 

 (checked tussock), Hyphantria cunea, Dru. (fall webworm), TcJea 

 Polyphemus, Cram. (American silkworm), Alsophila pometaria, Harr. 

 (fall canker-worm), Palaeacnta vernaia, Peck, (spring canker-worm), 

 Emiomos siibsignariiis, Hb. (snow-white linden moth), and Xvlina 

 antennata, Wlk. (ashen pinion). 



In the laboratory the following species were found to be unable 

 to free themselves from the adhesive : Esfigmene acraea, Dru. (salt- 

 marsh caterpillar), Plathypena scabra, F. (green clover worm), ScMzura 

 concinna, S. & A. (red-humped apple caterpillar), Hcteyocampa gutti- 

 vitta, Wlk. (saddled prominent), and Malacosoma americana, F. (tent 

 caterpillar). 



IsELY (D.). Grapevine Looper. — U.S. Dept. Agric, Washington, 

 D.C., Bull. 900, nth December 1920, 15 pp., 4 plates. [Received 

 20th April 1921.] 



The Geometrid moth, Lygris diver silineata, Hb., defoliates grape- 

 vines and the Virginia creeper. This paper deals with its biology 

 and control in the Erie-Chautauqua grape belt of Pennsylvania. 



The winter is passed in the egg stage, and most of the eggs hatch 

 during the first two weeks of June. The larval feeding period averages 

 about 46 days. Two days are spent as a prepupa and ten as a pupa 

 in a loose web spun on a fold of a leaf or grape cluster. The moth 

 emerges in mid-summer and deposits eggs that hatch in the following 

 year. The newly-hatched caterpillars are strictly solitary and scatter 

 over the vine. More than two or three are seldom found on a leaf. 

 Their attack is characterised by a series of whitish patches on the 

 upper surface of the leaf extending around the edge. 



Lead arsenate, U- lb. of powder or 3 lb. paste to 50 U.S. gals, liquid 

 (water or Bordeaux mixture), is the minimum strength that will kill 

 all stages of this pest. It should be remembered that a spray directed 

 primaril}^ against the grapevine rootworm {Fidia viticida) and the 

 grape-berry moth {Polychrosis viteana) immediately after the blossoms 

 have fallen incidentally controls L. diver silineata also. 



IsELY (D.). Grapevine Flea-beetles. — U.S. Dept. Agric, Washington, 

 D.C., Bull. 901, 13th December 1920, 27 pp., 4 plates. [Received 

 20th April 1921.] 



The grapevine flea-beetle, Haltica [Altica) chalybea, 111., eats out 

 the swelling buds in early spring in Pennsylvania, thus destroying 

 the embryonic shoots and fruit-clusters. Later both adults and 

 larvae feed upon the leaves. It is single-brooded, and winter is passed 

 in the adult stage. The eggs are deposited in batches under bud- 

 scales or strips of bark. The larvae migrate to the leaves to feed 

 and enter the soil to pupate. The adults emerge in early summer. 



Statements that the eggs are laid on leaves, that the insect is two- 

 brooded, and that it prefers thin-leaved types of grapes as hosts 



