291 



El Gusano Chupador de la Cana de Azucar. [The Sugar-cane Borer.] — 

 Revista Agricola, Bogota, ii, no. 12, December 1916, pp. 728-729. 

 [Received 3rd May 1917.] 



The Pyralid, Diatraea sacchamlis, F. {obliteratellus, Zell), is recorded 

 as being the principal pest of the sugar-cane crop in the northern 

 provinces of Argentina. 



De Bergevin (E.). Remarques a propos des Galles provoqu6es sur le 



Tamarix articulata par VEriophyes tlaiae Trabut. [Remarks on 

 the Galls caused by Eriophyes tlaiae on Tamarix articulata.] — Bull. 

 Soc. Hist. Nat. Afr. Nord, Algiers, viii, no. 4, 15th April 1917, 

 pp. 94-95. 



The galls, which are caused by the mite, Eriophyes tlaiae, have been 

 found to contain large numbers of a species of Triphleps, an Anthocorid 

 bug. These bugs must be regarded as injurious, since they live 

 largely on the juices of plants and destroy E. tlaiae, the galls of 

 which possess a commercial value. 



.BuRKiLL (I. H.). Scolia erralica, Smith, a Parasite of the Red 

 Coconut^ Weevil {Rhyncophorus ferrugineus). — Gardens' Bull. 

 Straits Settlements, Singapore, i, no. 11-12, 31st March 1917, 

 pp. 399-400. [Received 4th May 1917.] 



The wasp, Scolia erratica, which is distributed throughout Sikkim, 

 Burma. Tenassarim, Sumatra and Java, may be regarded as a 

 beneficial insect, since it preys on the grubs of the red weevil {Rhyncho- 

 phorus ferrugineus) and black rhinoceros beetle {Oryctes), both of 

 which attack coconut palms. 



HousER (J. S.). Two destructive Fall Caterpillars. — Mthly. Bull. Ohio 

 Agric. Expt. Sta., Wooster, i, no. 10, October 1916, pp. 297-303, 

 6 figs. [Received 5th May 1917.] 



The caterpillars here dealt with are the walnut datana, Datana 

 integerrima, and the yellow-necked apple caterpillar, or apple datana, 

 Datana ministra, which attack walnut and apple trees during late 

 summer and early autumn m all parts of the State of Ohio. They 

 ave hatched from eggs laid in clusters on the undersides of leaves and 

 are gregarious. 



Black walnuts, especially solitary trees, are often killed through 

 successive annual defohations by D. integerrima, and the butternut, 

 hickory, beech, oak, wallow, honey-locust, thorn and apple also suffer 

 severely. 



The apple is not the only tree attacked by D. niinistra, the caterpillars 

 of which thrive on pear, peach, cherry, oak, linden, chestnut and 

 beech, often stripping the branch of its foliage and leaving nothing 

 but the petioles. The red- humped apple caterpillar {Schizura concinna) 

 also attacks apple trees in this way. 



There are three methods of control suited to different stages of 

 growth. Young clusters of larvae may be stripped from the branch 

 by hand, and crushed, burned, or killed in vessels of water and 

 kerosene. The mass of sluggish, moulting caterpillars can be removed 



(C375) b2 



