juneig. i9!6 Aleyrodidoe 471 



TetraleuTodes mori, var. arizonensis (Cockerell) 



Aleyrodes mori, var. arizonensis C^W., 1903, in Fla. Agr. Exp. Sta. Bui. 67, p. 666. 

 Aleurodes mori CkH., 1900, in Sd. Gossip, n. s. v. 6, no. 72, p. 366. 



Described from specimens taken in Arizona on orange (PI. LXIX) . The 

 variety T. mori arizonensis is stated to differ from the typical T. mori in 

 having the wings white marked with black without any red. An exami- 

 nation of the type specimens after mounting shows the presence of red 

 markings on wings exactly as in T. mori, and we are unable to distinguish 

 any characters in support of its status as a variety. On different occa- 

 sions the Bureau of Entomology has received from Mexico an aleyrodid 

 seriously infesting the orange (PI. LXIX) which we are unable to distin- 

 guish in the immature stages from T. mori, and this species is considered by 

 Cockerell to be identical with his variety T. mori arizonensis. While the 

 variety, in our judgment, is invalid, we retain the name to designate a 

 race of T. mori which, in Mexico, for some reason breeds abundantly on 

 orange and is a pest of importance. T. mori arizonensis occurs only on 

 orange in Mexico so far as bureau records indicate. It was first collected 

 in 1894 by Dr. C. H. T. Townsend at Guadalajara and San Luis, and 

 again by Townsend in 1902 at Zapotlan. Two lots of material were 

 received from Prof. A. L. Herrera in 1905, without statement as to 



locality. 



LITERATURE CITED 



ASHBY, S. F. 



191 5. Notes on diseases of cultivated crops observed in 1913-14. Black fly or 

 "black scale." In Bui. Dept. Agr. Jamaica, n. s. v. 2, no. 8, p. 321-322. 



191 5. Report of the microbiologist. Citrus diseases. In Ann. Rpt. Dept. Agr. 

 Jamaica, 1914-15, p. 31. 

 Berger, E. W. 



1909. White-fly studies in 1908. Fla. Agr. Exp. vSta. Bui. 97, p. 39-71, 19 fig. 

 Cockerell, T. D. A. 



1900. Economic entomology in Arizona. In Sci. Gossip, n. s. v. 6, no. 72, p. 366- 

 367- 



1902. A synopsis of the Ale>Todidas of Mexico. In Mem. y Rev. Soc. Cient. 

 "Antonio Alzate," t. 18, p. 203-208, 3 fig. 



1903. Aleyrodes (Trialeurodes) vitrinellus Ckll. In Ent. News, v. 14, no. 7, p. 241. 



1903. White fly. (Aleyrodes citri) and its allies. In Fla. Agr. Exp. Sta. Bui. 67, 

 p. 662-666. 

 Hempel, Adolph. 



1899. Descriptions of three new species of Aleurodidae from Brazil. In Psyche, 

 V. 8, no. 280, p. 394-395- 

 KoTiNSKY, Jacob. 



1907. Aleyrodidae of Hawaii and Fiji, with descriptions of new species. In Bd. 

 Com. Agr. and Forest. Hawaii, Div. Ent. Bui. 2, p. 93-103, pi. i. 

 Maskell, W. M. 



1896. Contributions toward a monograph of the Aleurodidas, a family of Hemiptera- 

 Homoptera. In Trans, and Proc. N. Zeal. Inst., v. 28 (n. s. v. 11), 1895, 

 p. 411-448, pi. 24-35. 



