409 



Drake (C. J.). On some Tingidae new to the Fauna of Canada 

 (Hemip.). — Canadian Entomologist, London, Ont., li, no. 6-7, June- 

 July 1919, p. 159. 



This list includes Gorythucha salicis, Osborn & Drake, found on 

 Salix discolor and other species of willow, as well as on Ribes spp. ; 

 C. elegans, Drake, on poplar {Populus balsamifera) and willow ; 

 C. padi, Drake, on choke cherry {Primus demissa) ; C. parshleyi, 

 Gibson, on walnut {Juglans nigra), butternut (J. cinerea), Japanese 

 walnut {J. sibboldiana) and Juneberry {Amelanchier intermedia), its 

 range extending from Canada to North Carolina ; C heidemanni, 

 Drake, on birch ; C. betulae, Drake, on yellow birch {Betula lenta) ; 

 G. immaculata, Osborn & Drake, on balsam root {Balsamorrhiza 

 sagittata) ; and G. hewitti, sp. n., on hazelnut {Corylus americana). 



YoTHERS (W. W.). The Woolly White Fly in Florida Citrus Groves. 



— U.S. Dept. Agric, Washimjton, D.C., Farmers' Bull. no. 1011, 

 February 1919, 14 pp., 8 figs. [Received 26th July 1919.] 



Aleurothrixus howardi, Quaint, (woolly whitefly), recently introduced 

 into Florida citrus groves, while not as injurious as Dialeurodes citri, 

 Ashm. (citrus whitefly) or D. citrifolii, Morg. (cloudy- winged whitefly), 

 sometimes causes considerable loss to growers. The favourite food- 

 plant is grape-fruit, but tangerine, lemon and kumquat trees are also 

 attacked, as well as sea- grape, common guava, mango, and a species 

 of rubber. There are four generations in a year, adults being most 

 abundant in December and January, the latter part of May, the latter 

 part of July, and October and November. If spraying is found neces- 

 sary, this should be done about one week after the flies have disap- 

 peared, when the eggs have hatched and the young larvae have not 

 developed the thick woolly covering that protects them from sprays. 

 The methods of control of this pest, both by natural and artificial means 

 have previously been noticed [see this Review, Ser. A, v, p. 49, etc.]. 



Back (E. A.). Conserving Corn from Weevils in the Gulf Coast States. 

 — U.S. Dept. Agric., Washington, D.G., Farmers' Bull. no. 1029. 

 February 1919, 35 pp. 21 figs. [Received 26th July 1919.] 



The average loss of maize from weevil attack in the southern United 

 States is estimated at not less than 10 per cent. ; in many instances 

 it is much greater. The majority of the damage is done by Galandra 

 oryzae, L. (rice weevil), and Sitotroga cerealella, Oliv. (Angoumejis 

 grain-moth) ; the injury to the kernels is described. Helioiliis 

 (Ghloridea) obsoleta, F. (corn ear worm) greatly assists the weevils by 

 making punctures in the shuck and silk through which the weevils can 

 enter. Pyroderces rileyi, Wals. (pink cornworm) feeds on the kernel 

 and cob and also on the husk covering, thus reducing its value as a 

 protection from the weevils. A Bostrychid beetle, Dinoderus truncatus, 

 Horn (larger grain borer), also perforates the husk. 



The control of weevils is considered a simple matter if given a proper 

 place in farm economy. The greater resistance to weevil attack of 

 maize with a good shuck covering is pointed out and illustrated, and 

 the methods of dealing with different ears according to their shuck 

 protection is fully discussed [see this Review, Ser. A, vii, p. 3]. Only 

 those ears with the best shuck protection should be used for ."^eed. 



(C596) P19:i/144 1,500. 10.19. B.&F.Ltd., Gp.11/11. A 



