78 XATUEAL CONTEOL OF WHITE FLIES IN FLORIDA. 



Page. 



Sulphur waters, effect on spores of fungi 56 



Sweet gum. (See Liquidambar styracijiua.) 

 Tangerine {see also Citrus, Grapefruit, and Orange). 



food plant of Aleyrodes citri and Aleyrodes nubifeni 12 



Unexplained mortality of white flies in Florida 11-17 



VerticilUum heterocladum, description 37-38 



distribution 38 



effectiveness 38 



history 37 



insects attacked 38 



parasite of (Lecanium) Coccus hesperidum 37 



VeraJiia cardoni, enemy of citrus white fly 9 



Weather conditions in relation to fungous infections of white flies 57 



White flies in Florida, control by climatic conditions 10 



curling and dropping of leaves from drought. 19 



dropping from leaves 18 



fungous diseases 20-73 



overcrowding 18-19 



parasitic and predatory enemies 8-9 



unexplained causes 11-17 



fungi of little or no value as parasites 32-38 



natural control 1-73 



summary and conclusions 70-73 



fly, citrus (see also Aleyrodes ciln). 



control by bacterial diseases 19 



climatic conditions 10 



overcrowding 18-19 



host of J^gerita ivebberi 31 



Aschersonia aleyrodis 24, 25 



flavo-dtrina 26, 27 



Sphserostilhe coccophila 38 



infection with Microcera ep 33 



Sporolrichum 35, 36 



natural control, personnel engaged in investigations 7 



on Ligustrum spp. and Gardenia jasminoides 10 



parasitic and predatory enemies 8-9 



unexplained mortality 11-17 



cloudy-winged (see also Aleyrodes nubifera). 



control by bacterial diseases 19 



climatic conditions 10 



overcrowding 18-19 



host of Mgerita vebberi 31 



Aschersonia aleyrodis 24 



flavo-citrina 26, 27 



Sphserostilbe coccophila 38 



infection with Microcera ep 33 



Sporotrichum 35, 36 



parasitic and predatory enemies 8-9 



unexplained mortality 11-17 



Winds, strong drying, in control of citrus and cloudy-winged white flies 10 



o 



