ASCHERSONIA FLAYO-CITRINA. 17 



DISTRIBUTION OF ASCHERSONIA ALEYRODIS IN 1908. 



In Florida it has been reported from or seen at the following places, 

 occurring only on Aleyrodcs citri: 



Alva, Apopka, Bartow, Bradentown, Buckingham, Citra, Fort Myers, 

 Gainesville, Glen St. Mary, Jacksonville, Lake City, Leesburg, Manatee, 

 Mclntosh, New Smyrna, Oneco, Orlando, Oviedo, Palmetto, Sarasota, St. 

 Petersburg, St. Augustine. 



Outside of Florida it was reported by Cook and Home from Cuba on 

 Aleyrodcs citri R. & H., and Aleyrodcs howardii. Quaintance ; from Java 

 by Kirkaldy & Kotinsky, doubtfully upon Aleyrodcs longicornis Zehntner; 

 from Brazil by the same authority, doubtfully upon Aleyrodcs horridus 

 Hempel; from Ceylon by Parkin on various undetermined species of Aley- 

 rodes; and from Jamaica by Cockerell under the name of Aschcrsonia tahit- 

 ensis Mont., which is probably A. alcyrodis Webber. 



III. ASCHERSONIA FLAVO-CITRINA P. HENN. 



The discovery that Aschcrsonia flai'o-citrina P. Henn. was parasitic 

 upon Aleyrodcs citri R. & H., was made by P. H. Rolfs 25 by means of 

 specimens sent to him from J. F. Adams, Winter Park, Fla., in September, 

 1906 (Plate II, Fig. 24). Later in the same year E. W. Berger found this 

 fungus effectively parasitizing Aleyrodcs citri in several other localities in 

 the eastern part of Florida, and since that time he has succeeded in intro- 

 ducing it into still other localities. This fungus was first described by P. 

 Hennings in 1902, as occurring on leaves of Psidium from the botanical 

 gardens of Sao Paulo, Brazil. No mention is made by him of any insect 

 associated with its presence on the guava leaf. This species is described by 

 Hennings 26 as follows : 



Aschcrsonia flai'o-citrina P. Henn. Stromatibus carnosis, hypophyllis, subdis- 

 coideo-pulvinatis vel hemisphaerico-depressis, citrinis, 2 2.5 mm. diameter, pruinosis, 

 superne ptmctulato-pertusis, intus subaurantiis, subiculo membranaceo, flavo ; pycnidiis 

 immersis oblongis, paraphysibus filiformibus, flexuosis, hyalinis 140-180X11.5 micr., 

 continuis; conidiis fusoideis, utrinque acutis, continuis, hyalinis, 12-18X2 micr.; con- 

 idiopboris brevibus, hyalinis, fasciculatis. 



It was found in the botanical garden of Sao Paulo on a leaf of Psidium 

 sp., October, 1901. 



That Aschcrsonia flai'o-citrina may be able to attack other Aleyrodidae 

 besides A. citri is shown by the fact that in June, 1907, Stene of the Rhode 

 Island College of Agriculture, was able to infect larvae of Aleyrodcs raf>or- 

 arionnn, on cucumber leaves in the greenhouse, from material sent from 

 Florida by E. W. Berger. 27 These are the only two species of Aleyrodes on 

 which it has yet been observed. It is probable, however, that further ob- 



25 Rolfs, P. H. Fla. Exp. Sta. Kept., p. xvi, 1907. 

 'Hennings. P. Hedwigia, Vol. 41, p. HOT, 1902. 

 21 Berger, E. W. Fla. Agr. Exp. Sta. Kept., p. xxxiv, 1907. 



