194 



Davis (J. J.)- Effect o£ Feeding Paradichlorobenzene-treated Feed 



to Poultry. — Jl. Econ. Ent., Geneva, N. Y., xiv, no. 6, December 

 1921, p. 509. 



Maize treated with paradichlorobenzene for the destruction of the 

 Angoumois grain moth [Sitotroga cerealella, 01.] is apparently unfit for 

 poultry food, as the flesh of the birds becomes tainted and the eggs 

 they produce are inedible. This I'esult has been noticed in the case of 

 fowls fumigated with nitrobenzene for the control of lice and mites. 



Fenton (F. a.) & Ressler (I. L.). Artificial Production of Tipbum. — 



Jl. Econ. Ent., Geneva, N. Y., xiv, no. 6, December 1921, p. 510. 



This information with regard to the artificial production of tipbum 

 by means of crushed leaf-hoppers, Empoasca mali, has already been 

 noticed [R.A.E., A, x, 177]. 



Allen (H. W.). Notes on a Bombylid Parasite and a Polyhedral 

 Disease of the Southern Grass Worm, Laphygma frugiperda. — 

 Jl. Econ. Ent., Geneva, N. Y., xiv, no. 6, December 1921, 

 pp. 510-511. 



Laphygma frugiperda, S. & A. (southern grass worm) was very 

 abundant in Mississippi during 1920. The chief natural checks were 

 a polyhedral disease and the Bombyliid parasite. Anthrax lucifer, F. 

 Adults of this fly were very numerous during the late summer and 

 early autumn. The parasitised larvae of L. frugiperda pupate success- 

 fully, but shortly afterwards the parasites pupate within the pupal 

 case of the host, and emerge a few days later. Of 72 pupae collected, 

 18 were found to be thus parasitised. Under laboratory conditions 

 a mortality of about 37 per cent, resulted from polyhedral disease ; 

 this may be slightly higher than the incidence in the field. 



Jarvis (E.). Work of the Division of Entomology. — 21st Ann. Rept. 

 Queensland Bur. Sugar Expt. Sta., Brisbane, 1922, pp. 43-46. 



During 1921 experiments were undertaken to determine the value 

 of arsenious acid in the control of Lepidiota {Lepidoderma) alhohirta, 

 Waterh., and L. frenchi, Blackb. Applications of 40-200 lb. per acre 

 produced no result, no difference being noted between the treated and 

 untreated areas. The occurrence of natural enemies of L. albohirta 

 referred to in the previous report [R.A.E., A, ix, 169] is recorded. 

 The most effective measure is the collection of the beetles, but the 

 author considers that the larvae only of L. frenchi should be collected, 

 as this species has a two years' life-cycle, and the larval stages occupy 

 18 months. The collection of the beetles outside canefields is, how^ever, 

 not worth while, owing to their very hmited range of flight. Efforts 

 should be concentrated on L. alhohirta, which does more damage. 

 All small larvae unearthed during March and June are likely to be 

 second stage L. frenchi, and these should be collected. 



Most of the information concerning Ceromasia sphenophori (the 

 Tachinid parasite of Rhahdocnemis obscura), Phaenacantha australis, 

 Kirk., Laphygma exempia, Wlk., Rhyparida morosa, Jac, Polyochasp., 

 an unidentified Tineid moth-borer, the Scoliid, Campsomeris tasmani- 

 ensis, Sauss., and the fungus, Metarrhizium anisopliae, which attacks 

 L. alhohirta, has already been noticed in the bulletins and monthly 

 leports of the Station. 



