148 



tomatoes and cucumbers ; E. fuscula, on egg-plant, potatoes and 

 tomatoes ; Phylhtreta citkita, on cabbage, turnips and similar crops ; 

 Epitrix parvnla, on tobacco, potato, tomato and egg-plant ; Dlsonycha 

 xanthomelaemi and D. triangularis on beets and spinach ; Ghaetocnetna 

 confinis on sweet potato ; Psylliodes punctvlata on hops, sugar-beet 

 and a few other plants ; Haltica chalybea- on apple and pear foliage ; 

 H. ignita on strawberry and other plants ; and Chaetocnema pulicaria 

 and C. denticulata on maize. 



The life-histories of these species are very similar. Adults emerge 

 during the spring and oviposit generally on the roots, but occasionally 

 on the leaves of some weed resembling the preferred cultivated food- 

 plant. These larvae feed upon the weed roots until mature ; they 

 then pupate and the beetles emerge from the ground. In some cases 

 the life-cycle requires only a month, but in others development is so 

 slow that only one generation appears annually. Since with one or 

 two exceptions the larval stage is passed on the roots of weeds, clean 

 cultivation and the destruction of weeds should prevent these beetles 

 from becoming very injurious. When the adults are numerous they 

 should be sprayed with Bordeaux mixture to which 3 lb. lead arsenate 

 powder (or 6 lb. paste) has been added for each 50 U.S. gallons of spray. 

 Young plants may be protected at the time they are set out or trans- 

 planted by dipping the tops in 1 lb. lead arsenate to 8 to 10 U.S. gals, 

 water. Tobacco, dust, lime, etc., may be dusted on the plants as 

 a protection horn attack ; this should be done while dew is on the plants 

 and should be applied often enough to keep them well covered with dust. 



Parks (T. H.). Fall Practices to Destroy Cereal Crop Insects. — Mihly. 

 Bull. Ohio Agric. Expt. Sta,, Wooster, no. 35, November 1918, 

 pp. 333-336. [Received 1st February 1919.] 



The general measures recommended for the destruction of pests of 

 cereals are reviewed. The burning of fence-rows of blue-grass around 

 fields infested with the chinch bug [Blissus leucopferus] during the 

 autumn may be expected to destroy as many as 80 to 90 per cent, 

 of the hibernating insects. The use of dust or tar barriers is also 

 suggested against this pest, and where it has been abundant it is 

 advisable to plant a strip of land adjoining the wheat field with 

 oats or potatoes, as these crops are not susceptible to attack. Land 

 to be planted with maize should have the sod ploughed in autumn or 

 early winter ; this will destroy such underground insects as cutworms, 

 white grubs, mreworms, webworms and bill-bugs. All grass and weeds 

 should be kept down before the maize is planted. As white grubs and 

 wireworms require more than one year for development, land worked 

 rmder a proper rotation of crops rarely becomes infested by them. 

 They do not attack leguminous plants and therefore a crop such as 

 red clover grown one year in every 3 or 4 will generally protect cereal 

 crops from attack. Autumn cultivation of lucerne stubble will 

 destroy many grasshoppers as weU as webworms. 



Bentley (G. M.). The Cotton Boll Weevil in Tennessee. — Tennessee 

 State Bd. Entom., Knoxville, Bull. no. 22, September 1917, 14 pp., 

 24 figs. [Received 1st February 1919.] 



This bulletin deals with the present status of the boll weevil 

 situation in Tennessee for the purpose of familiarising cotton growers 



