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MISCELLANEOUS PAPERS 



of the orange, perhaps rivaling the ^o-called white fly of Florida 

 {Aleyrodes citri Riley and Howard ) . 



Described from numerous infested leaves, pupa cases in balsam 

 mounts, and two females. 



Type.— No. 10821, U. S. National Museum. Named for Dr. L. (). 

 Howard. 



Cotton. — Aleyrodes gossypH Fitch, described in Fitch's Third 

 Iveport, is known only from the single type specimen on Gossyjnam 

 religiostim from Ningpo, China. The second species is Aleyrodes 

 ahutilonea Haldeman, of which J.- fitcltl Quaintance appears to be 

 a synonym. This species has been found on cotton at Harrisville, 

 Miss.; Selma, Ala., and Columbus, Tex. At the place first mentioned 



the insects were very abun- 

 dant, the JoAver surface of the 

 leaves being covered with the 

 pupa cases. The insect was 

 also taken by Itiley on cotton 

 growing in his garden at 

 Wiishington. D. C, and in 

 Delaware. Maryland, and Vir- 

 ginia it occurs very abun- 

 dantly on .ihutilon ahutiloru 

 ])robably its native food plant, 

 which it greatly injures, and 

 is thus beneficial, since this 

 plant is a troublesome weed. 



GuAVA. — In Florida Aley- 

 rodes forideusis Quaintance is 

 quite common on the guaAa, the under surface of leaves sometimes 

 being quite covered Avith the pupa cases. In Brazil Aleyrodes hor- 

 ridus Hem pel and ^1. goyaha' G(ildi occur on this plant, the latter 

 often by hundreds, constituting a serious pest. Aleurodicus coeols 

 Curtis infests guava in Trinidad, Venezuela, and Brazil. Guava is 

 also infested by .1. eocl'ei-elU in Brazil, and Iw .i. holniesii Maskell in 

 Fiji, which Cockerell thinks has there been introduced from America 

 along with its food plant. 



CocoANUT. — In Demerara and Barbados the cocoanut palm for 

 many years has been seriously injured by Aleurodieus cocois Curtis, 

 which, in company with a scale insect, was held responsible for a 

 widespread disease of the trees on the latter island. This species 

 was the subject of an article by Riley and Howard in Insect Life, 

 Volume V, page 314 (1893). At the time this article was written, 

 the introduction of this species into southern Florida on cocoanut, 

 and guava, which it also infests, was considered only a matter of 

 time, if not already accomplished. Thus far, however, nothing has 

 been recorded of its occurrence in that State. 



Fig. 24. — Aleyrodes huwardi: Pupa case and detaiLs. 

 GreaUy enlarged (original). 



