413 



In the field, experiments in dusting versvis spraying were carried 

 out for the control of fruit-tree insects. Practically no difference 

 in results from the two methods was observed in the case of the codling 

 moth {Cydia pomoneJla), while San Jose scale {Aspidiotus perniciosus) 

 was comjiletely controlled by sodium sulj)hide and talc dust, though 

 this might not be the case every year. The substitution of dusting 

 for spraying is not on the whole recommended. 



The blackberry leaf-miner [Fenusa^^ has been destroying a large 

 percentage of the foliage in infested fields. It is believed that lead 

 arsenate destroys the adults, and experiments with this poison will 

 be made next year. The apple maggot [Rhagoletis pomonella] can 

 be controlled by spraying with lead arsenate when the adults begin 

 to appear and again two weeks later. The parasites of San Jose 

 scale were very abundant, particularly Prospaltella perniciosi. It is 

 known that a moderate breeze will carry the larvae of this scale 

 some 50 feet and it is hoped to make more accm-ate tests as to this. 



WiCKHAM (H. F.). An Interesting New Species of Eleodes. (Col., 

 Tenebrionidae.) — Entom. News, Philadelphia, xxix, no. 7, July 

 1918, pp. 255-257. 



The beetles of the genus Eleodes have not been hitherto regarded 

 as very injurious to field or forage crops, but the larvae have recently 

 been found doing considerable damage to wheat [see this Review, 

 Ser. A, vi, p. 307]. This paper describes Eleodes barbata, sp. n., which 

 has not yet been reported as troublesome. 



Entomological Gleanings from all Quarters of the Globe. — Entom. 

 News, Philadelphia, xxix, no. 7, July 1918, pp. 271-274. 



In Vii'ginia indications point to the fact that a continued low 

 temperature is more fatal to wood-boring Cerambycid larvae than 

 fluctuatmg low temperatures, the fatal low temperature being from 

 15-20 ° F. below zero. There seems to be a greater mortality in exposed 

 wood than in moist logs on the groimd, the difference in humidity 

 perhaps being an important factor. Milder winters in the neighbour- 

 hood of Washington seem to have more disastrous effects on the 

 European pine sawfly {Diprioti simile, Haitig). 



In western Oregon, Aphids have appeared in the most serious 

 outbreak experienced in recent years. Acyrthosiphon {Macrosiphum) 

 pisi was especially numerous, and practically no type of crop or 

 plant has escaped injury. Experimental work to control the insects 

 took several forms. A wooden drag, 10 feet long and 18 inches wide, 

 pulled by a horse through 12 acres captured 140 lb. of Aphids. A 

 fungus, Empusa aphidis, Hoffm., is killing Aphids in great numbers, 

 but apparently only in limited areas. Macrosiphum creelii appeared 

 in great numbers on lucerne in Nevada. The rosy apple aphis [Aphis 

 malifoliae] has been imusually abimdant in Oregon and has injured 

 apples in West Virginia. The green peach aphis {Myzus persieae] 

 has been abundant in Washington. The melon aphis [Aphis gossypii] 

 has caused damage in California, Texas and Alabama ; the bean 

 aphis [A. Tumicis] has caused complaints in California, Ohio and 

 New Jersey. 



