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HousER (J. S.). Dasyneura vlmea, Felt ; a New Elm Pest. — Jl. Econ. 

 Entom., Concord, ix, no. 1, February 1916, pp. 82-84, 1 fig. 



Perrisia (Dasyneura) ulmea, Felt, is apparently generally distributed 

 throughout southern Ohio. The damage consists of the formation of 

 aborted bud-galls on elms, usually at the tips of the twigs, resulting 

 in the checking of branch development. In the most severe cases 

 observed, 70 per cent, or more of the branches were affected. Preference 

 is shown for individual trees of Uhnus americana. Larvae may be 

 found in the galls of infested trees between midsummer and the 

 following spring ; from one to eight are present in each gall. The 

 egg and pupal stages were not observed by the author. A Chalcid, 

 Callimome sp., has been reared from the larva. The best control 

 measure seems to be the cutting away of all twigs bearing aborted 

 buds before growth begins in spring. The twigs should be left on 

 the ground for the parasites to emerge, the host insects being killed 

 by the drying up of the galls. 



Headlee (T. J.). Sulphur-Arsenical Dusts against the Strawberry 

 Weevil {Anthonomus signatus, Say).— JL Econ. Entom., Concord, 

 ix, no. 1, February 1916, pp. 8i-89, 1 fig., 1 table. 



Injury to strawberry plants by Anthonomus signatus, Say, is due 

 primarily to the oviposition habits of the female. Eggs are laid in 

 the unopened staminate flower buds ; attack begins when the buds 

 open, and continues for about two weeks. In addition to the 

 cultivated strawberry, the following may serve as food-plants :— Wild 

 strawberry, blackberry, dewberry, black-capped raspberry, Potentilla 

 canadensis (yellow flowered cinquefoil), Cercis canadensis (red-bud 

 tree), etc. Chittenden, in 1897, suggested the following measures of 

 control : (1) covering the beds with muslin ; (2) cultivation of 

 pistillate or of profusely blooming varieties ; (3) the use of trap crops 

 and clean culture. Bordeaux mixture, or Paris green and arsenate of 

 lead, alone or combined with Bordeaux, were recommended as 

 repellents. The above measures have either proved impracticable or 

 have not been successful. The wide range of food-plants renders 

 clean culture and trap crops useless, except in districts free from 

 woodlands or waste lands, and the problem of control is thus one of 

 making the food-plants distasteful or poisonous during the two weeks 

 in which injury occurs. The efiect of certain contact insecticides, 

 stomach poisons and pure repellents on the weevil was tested, and it 

 was found that a mixture of 1 lb. lead arsenate powder and 1 lb. 

 sulphur dusted over the plants afforded almost perfect protection, 

 and caused no injury to the leaves. Later applications made on 

 18th May did not damage the open blossoms. The minimum cost of 

 the mixture was 5d. per lb., and about 78 lb. was required per acre. 

 The mixture acted solely as a repellent, the weevils being destroyed 

 in very few cases. According to Mr. W. Moore, in Minnesota this 

 weevil returns to the strawberry plots in late summer or autumn, and 

 feeds on the leaves, whereas in New Jersey hibernation in woodlands 

 occurs. 



