JOURNAL OF ENTOMOLOGY AND ZOOLOGY 57 



Various ways of infecting' trees with these fungi have been 

 tried, such as spraying witli water-mixtures of spores, rubbing 

 with infested leaves, etc. The cost of infecting an orchard is 

 very k)W and if properly done should pay well, particularly 

 since the fungi in large areas are naturally more effective. 



There is a slight damage done the leaves of citrus trees by 

 these fungi, but it is seldom of any importance. Indirectly, 

 however, by hindering the use of fungicides in the orchard 

 these fungi may be charged with some damage. 



Fungi under ordinary conditions and for a term of years 

 have, unaided, controlled white-fly to the extent of about one- 

 third absolute efficiency, the authors believe. 



There are in this Bulletin No. 102 of the Department of 

 Entomology a number of original plates showing various stages 

 of infection by the several fungi. 



W. B. 



SEEKING FOR PARASITES OF TtlE "WHITEFLY" 



AND THEIR xVTTEMPTED INTRODUCTION 



INTO FLORIDA 



K. G. WOGLUM 

 UNITED STATES DEPARTMENT OF AGRICULTURE 



In 1910 the sum of $5,000 was set aside by Congress for 

 investigation of possible parasites of the "whitefly" {Aley- 

 rodes citri). Mr. R. G. Woglum was chosen for the errand, 

 though he was at the time testing the efficacy of hydrocyanic 

 gas in killing scale insects. He traveled through Southern 

 Europe, Ceylon, and India, where he finally discovered a lady- 

 beetle {Crytogitatha flavescens motsch.) feeding on the fly. At 

 Lohore, in the Punjab, an internal parasite was discovered 

 which was named Pro.spalteUu lahnn iisis. Living specimens 

 were at length secured with difficulty and with these and a 

 quantity of the "whitefly" food supply the return trip to 

 Florida was attempted. Mr. Woglum succeeded in landing in 

 Orlando, Florida, twenty-eight healthy lady-birds and some 

 Pruaijulttlla on December 2, 1911. Owing to the naturally 



