114 



Weiss (H. B.) & Lott (R. B.). Notes on Orchestes rufipes, Lee, in 

 New Jersey. — Psyche, Boston, Mass., xxviii, nos. 5-6, October- 

 December 1921, pp. 152-155. 



Rhynchaenus [Orchestes) rufipes, Lee, has been previously recorded in 

 various parts of U.S.A. on Salix liicida, and on 5. pentandra in Canada. 

 In New Jersey it is known to occur on 5. lucida and 5. nigra. 



In New Jersey the beetles hibernate under loose bark and dead 

 wood about the end of September and beginning of October. The 

 adults emerge in the middle of April and feed on the leaves up to the 

 end of May. The eggs are deposited singly along the lower epidermis 

 during the end of May and first part of June. On hatching, the larvae 

 begin to mine the leaves until the beginning of July, when they pupate. 

 This stage lasts 7-10 days, and the adults on emerging feed continuously 

 till the cold weather, when hibernation occurs. 



The remedial measure recommended is spraying the lower leaf 

 surfaces with lead arsenate during the end of April or beginning of 

 May. This should secure complete destruction, owing to the length 

 of time during which the adults feed before depositing eggs. 



A description is given of all stages of this weevil. 



SiEGLER (E. H.), U.S. Bur. Ent., & Roberts (J. W.). The Dusting 

 Meihodi.— Re pt. Maryland A gric. Sac, College Park, Md.,\\i (1918). 

 1919, pp. 110-126. [Received 4th January 1922.] 



A short report on the dusting method for fruit trees, based largely 

 on the experiments of the Federal Department, is given. The chief 

 advantages of dusts over liquids are that less labour and time are 

 required, and hilly and rough orchards may be more easily treated 

 Dust materials are rather more expensive than liquid ones. The 

 following formulae are in general use against chewing insects and 

 fungous diseases : 10-15 per cent, lead arsenate powder and 90-85 

 per cent, superfine sulphur, or 10 per cent, lead arsenate powder, 50 per 

 cent, superfine sulphur and 40 per cent, filler (hydrated lime or gypsum). 

 The second formula is cheaper, but its fungicidal value is less. Against 

 chewing insects only 10-15 per cent, lead arsenate powder and 90-85 

 per cent, filler may be used. 



Sufficient tests have not yet been made to establish the true value of 

 dusting under all conditions. Up to the present, fight infestations of 

 codling moth [Cydia pomonella] are controlled as well b\^ dust as by 

 liquid sprays, but in heavy infestations the latter are superior. The 

 use of liquid sprays should be continued against all insects and diseases 

 requiring dormant treatment, and against sucking insects. 



Cory (E. N.). The Oriental Peach Moth {Laspeyresia molesta, Busckj. 

 —Rept. Marvland Agric. Soc, College Park, Md., iii (1918), 

 1919, pp. 138-141. [Received 4th January 1922.] 



It has been suggested that areas infested with Cydia [Laspeyresia) 

 molesta, Busck, should be quarantined, but the author does not con- 

 sider this necessary. The bionomics and control of the pest have 

 already been noticed [R.A.E., A, vi, 369 ; vu, 223, etc.]. Examina- 

 tion proved that in 1918 less than 5 per cent, of the peaches were 

 destroyed b}^ it. 



