U. S. D. A., B. E. Tech. Ser. 12, Pt. IX. Issued September 1, 1909. 



MISCELLANEOUS PAPERS. 



A NEW GENUS OF ALEYRODID^E, WITH REMARKS ON 

 ALEYRODES NUBIFERA BERGER, AND ALEYRODES CITRI 

 RILEY AND HOWARD. 



By A. L. QUAINTANCE, 



III Charge of Deciduous Fruit Insect Investigations. 



In 1900 the writer described ^ as Aleyrodes persecB a species of 

 white fly found in the Bureau of Entomology collection, received 

 from Fort George, Fla., and collected April 22, 1880, on Persea 

 carolinensis. The adult of this species was at the time unknown. The 

 so-called pupa-case, however, exhibited the essential structural char- 

 acters of this stage for the genus Aleurodlcus, and it was ventured 

 in the description that the adult when found would show the insect 

 to belong to this genus. Professor Cockerell,^ for the reasons given, 

 referred this species to Aleurodicus, and this assignment seemed to 

 the writer well warranted. 



Dr. A. W. Morrill, in the course of his orange white-fly investiga- 

 tions in Florida during the past two or three years, has frequently 

 met with this insect on orange and other plants and has been able to 

 obtain the adult in quantity. He has kindly furnished the writer 

 with abundant specimens of all stages and copies of his notes. The 

 adult, contrary to what had been expected from the structure of the 

 pupa-case, is not an Aleurodicus, and presents certain peculiarities not 

 found in other genera of the family, thus necessitating the establish- 

 ment of a new genus, as follows : 



PARALEYRODES, new genus. 



With wing venation of Aleyrodes. Pupa-rase of Aleurodicus 

 type. Fore wings with but a single vein, and a rudimentary branch 

 near basal fifth. Hind wings with a single unbranched vein. An- 

 tennae four-jointed, apparently due to coalescence into two segments 



« Tech. Ser. 8, Div. Ent., U. S. Dept. Agr.. p. 32. 



^Catalogue of the Aleyrodidfe of the World (Proceedings Academy Natural 

 Sciences, Phihidelphia, 1902. p. 279). 



169 



