THE GREEX JUNE BEETLE. 49 



the grubs again become active until the middle of May, when the 

 larva makes a substantial cocoon, in which it transforms to the pupa. 

 The pupal period lasts 15 to 20 days. 



Many natural enemies of the grubs and beetles, such as birds and 

 certain internal insect parasites and predacious insects, materially 

 aid in the reduction of the pest. Of these, blackbirds, robins, and 

 a large digger wasp are the most effective. 



For the control of the grubs in cultivated fields, trapping with 

 flowerpots or V-shaped troughs are the most successful. Poisoned 

 baits, prepared in the same manner as for cutworms, scattered on 

 lawns and cultivated fields late in the evening, are also valuable. 

 Kerosene emulsion is an excellent remedy. Flooding is of value on 

 golf links and lawns. 



Hand methods are employed for capturing the beetles as they 

 occur on fruits and for the larvse on lawns and golf greens. 



LITERATURE CITED. 



(1) Linnaeus, Carolus V. 



1758. systema nature, t. 1, ed. 10. S24 p. Holmia?. 



(2) 



1764. MUSEUM LUDOVIC.E ULRIC-E. INSECTA ET CONCHILIA. 720 p. 



Holmise. 



(3) Walsh. B. D. 



1865. the grub-worm. In Colman's Rural World. Dec.. 1S65. 



(4) and Riley, C. V. 



1869. BEETLES SWARMING ABOUND THE LAWN. 1)1 Amer. Entomologist, 



v. 1, no. 12, p. 246. 



(5) LeBaron. William. 



1874. foueth annual repoet ox the noxious and beneficial insects 

 of the state of Illinois. 199 p., illus. Springfield, 111. 



(6) Howard. L. O. 



1879. [NOTES ON THE LARVA OF THE MAY BEETLE LACHNOSTERNA FUSCA.] 



In Can. Ent., v. 11, p. 200. Oct. (Also in Ann. Rept. Ent. Soc. 

 Ontario for the rear 1879, p. 35, 1880.) 



(7) 



1882. dorsal locomotion of alloehina nitida. In Amer. Nat., v. 

 16. p. 411. 



(8) Saunders, William. 



1883. insects injurious to the fig. In Insects injurious to fruits, 

 p. 424, fig. 440. 



(9) Forbes, S. A. 



1884. THIRTEENTH REPORT OF THE STATE ENTOMOLOGIST ON THE NOXIOUS 

 AND BENEFICIAL INSECTS OF THE STATE OF ILLINOIS. 203 + XXi p. 



xv pi. Springfield, 111. 

 (10) 



1884. SUPPLEMENTARY REPORT ON INSECTS AFFECTING THE STRAWBERRY. 



In Trans. Mi ss . Valley Hort. Soc. for the year 1884, y. 2, p. 234-258. 

 1S6606 — 22— Bull. 891 4 



