462 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 7 



written subsequent to the publication of the description, Dr. Felt 

 writes that "Karschomyia cocci belongs with a considerable series 

 known to be predaceous, and there is very little question but what this 

 insect is an enemy of the sugar-cane mealy-bug, ..." 



One new enemy of Laphygma frugiperda S. and A. has been observed. 

 This is the common predaceous Reduviid bug, Zelus ruhidus, which 

 has been found attacking the Laphygma larvae. 



Mr. W. E,. Walton of the United States Bureau of Entomology has 

 described two new Tachinidce, reared from Noctuid larvae that feed 

 upon the leaves of sugar cane. One of these, Linncemyia. fulvicauda, 

 is parasitic upon Remigia repanda Fabr., the other, Compsilura oppug- 

 nator, upon Cirphis latiuscula H. S.^ 



The determination of an Hesperid, Prenes ares Felder, bred from 

 larvae found feeding on cane leaves, has been received from Dr. H. G. 

 Dyar of the United States Bureau of Entomology. The larvae of still 

 another Hesperid have been observed upon cane foliage and Dr. Dyar 

 states that this species ''comes near Thymelicus magdalis H. S. from 

 Cuba, but is obviously distinct." These Hesperids, together with the 

 species already recorded, Prenes nero Fabr., are unimportant as pests 

 of sugar cane in Porto Rico. 



Two plant-lice are known to attack sugar cane in Porto Rico. One 

 of these has previously been recorded from the island under the name 

 of Sipha graminis Klt.^ 



More recently, material has been examined by Mr. J. T. Monell and 

 Mr. John J. Davis of the United States Bureau of Entomology and they 

 have determined the species as Sipha flava Forbes. The second species 

 which has been referred to by Mr. Van Dine as ''another species of 

 aphis . . . at present undetermined,"^ has been identified by Mr. 

 Davis as Aphis setaria; Thos. The Chrysopid which feeds upon Sipha 

 flava has been identified by Mr. Nathan Banks of the United States 

 Bureau of Entomology as Chrysopa collaris Schm. Aphis setarice is 

 heavily parasitized by what Mr. A. B. Gahan of the United States 

 Bureau of Entomology states is probably Lysiphlehus testaceipes Cress. 

 The larvae of a ladybird, Scymnus roseicollis Muls., have also been 

 observed feeding upon it. 



1 Proceedings of the Entomological Society of Washington, Vol. XVI, No. 2. 

 June, 1914. pp. 93-95. 



2 Hooker, C. W. Entomological Conferences in Porto Rico. Journ. Econ. 

 Entom., Vol. 6, No. 1, pp. 148-150. p. 149. 



Van Dine, D. L. The Insects Affecting Sugar Cane in Porto Rico. Journ. Econ. 

 Entom., Vol. 6, No. 2, pp. 251-257. 



Van Dine, D. L. Report of the Entomologist. Bui. 5 (3d Ann. Rpt.), Exp. Sta. 

 of P. R. Sugar Producers' Assoc, August, 1913, pp. 25-46, pp. 32-33. 



« Bui. 5 (3d Ann. Rpt.), Exp. Sta. of P. R. Sugar Producers' Assoc, p. 40. 



