225 



Peluffo (A. T.). El Pulg6n negro del Duraznero, Aphis persicae. 

 [The Black Aphis of the Peach.] — Uruguay: Minist. Indust., 

 Defensa Agricola, Bol. Mens., Montevideo, i, no. 9, September 

 1920, pp. 225-227, 1 fig. [Received 28th February 1922.] 



The winter eggs of Myzus persicae hatch in spring, and the resulting 

 apterous females reproduce parthenogenetically. There are a number 

 of apterous and alate generations during the spring and summer. 

 Among the more important natural enemies is a Coccinellid, Cycloneda 

 (Neda) sanguinca. A potash soap spray is recommended, care being 

 taken to apply this in fine weather in the evening, as spraying in hot 

 sunshine may result in scorching. 



La Lagarta de la Alfalfa. [The Lucerne Butterfly.] — Uruguay : 

 Minist. Indust., Defensa Agricola, Bol. Mens., Montevideo, i, no. 9, 

 September 1920, pp. 231-233, 7 figs. [Received 28th February 

 1922.] 



These notes briefly describe the lucerne butterfly [Colias lesbia], 

 the damage done by it, and the measures suitable against it. 



GiACCONE (V.). Los principales Enemigos del Naranjo y Arboles 

 famigliares. [The Chief Enemies of the Orange and Cultivated 

 Trees.] — Uruguay: Minist. Indust., Defensa Agricola, Bol. Mens., 

 Montevideo, i, no.''9, September 1920, pp. 234-235, 2 figs. [Received 

 28th February 1922.] 



The pests mentioned are two scales, Pseudococcus [Dactylopius) citri, 

 Risso, and Aspidiotus hederae, Vail, {limonii, Sign.), against which the 

 usual measures are advised. 



Peluffo (A. T.). El " Gusano " de las Manzanas, Carpocapsa porno- 

 nella. [The Apple Worm, Cydia pomonella.] — Uruguay : Minist. 

 Indust., Defensa Agricola, Bol. Mens., Montevideo, i, no. 10, 

 October 1920, pp. 255-260, 8 figs. [Received 28th February 

 1922.] 



About 90 per cent, of the Uruguayan apple crop is damaged by 

 Cydia {Carpocapsa) pomonella, L. ; this article describes the various 

 traps and sprays that should be used to decrease this loss. 



MoLiNS (J.). El Bicho moro Vaquilla : Epicauta adspersa — Epicauta 

 atomaria. [The Black Grub, E. adspersa — E. atomaria.] — Uruguay : 

 Minist. Indust., Defensa Agricola, Bol. Mens., Montevideo, i, 

 no. 12, December 1920, pp. 325-328, 4 figs. [Received 28th 

 February 1922.] 



The larvae of Epicauta adspersa hatch after an incubation period of 

 three weeks. It is believed that locust eggs form their chief food, 

 and they have been seen to devour eagerly the eggs of Dichroplus 

 vittiger. An increase of these beetles also appears to take place after 

 a locust outbreak. Hibernation occurs in a pseudo-pupal stage, 

 which may last for years. The adult is responsible for injury to 

 Solanaceae, beet, lucerne and other plants. The best checks are 

 spraying with copper arsenate, Paris green, etc. A 4 per cent, 

 solution of potash soap is also useful. 



