FG. 1. Map of the greater Caribbean region showing areas of occurrence of the three major coconut palm diseases, lethal yellowing (LY), hartrot (HR), and red ring (RR). Discussion The major diseases of coconut palm, LY, HR, and RR occur in specific geographical ranges. Because of confusion in symp- tomatology of these and several other problems, there is some confusion in the literature as to which diseases occur where. The objectives of the current research project are to define where these diseases, particularly LY and HR, occur, and to investigate new and simpler diagnostic methods. The major benefit of the research is the development of information valuable to plant quarantine programs designed to protect coconut production within the Caribbean Basin. References 1. Anon. 1980. Diseases of coconut. Commonwealth Agric. Bureaux (UK), Annotated Bibliography No. M4. 49 pp. 2. Dean, C.G. 1979. Red ring disease of Cocos nucifera L. caused by Rhadinaphelinchus cocophilus (Cobb, 1919) Goodey, 1960. Commonwealth Agric. Bureaux (UK), Tech. Comm. No. 47. 70 pp. 1. 3. Dollet, M., J. Giannotti, M. Ollagnier. 1977. Observation de protozoaires flagelles dans les tubes cribles de palmiers de huile malads. C.R. Acad. Sci. Paris. Ser. D. 284:643-645. 4. Griffith, R. 1981. Cedros wilt disease of coconuts. Ministry of Agric. Land and Fisheries, Trinidad and Tobago. 48 pp. 5. Howard, F.W., D.L. Thomas. 1980. Transmission of palm lethal decline to Veitchia merrillii by planthopper, Myndus crudus. J. Econ. Entom. 73:715-717. 6. Howard, F.W.,J.P. Kramer, M. Feliz Peralta. 1981. Homopteros auchenor- rhyncha asociados a palmeras en una area de la Republica Dominicana affectada por el amarilliamiento letal del cocotero. Folia Entom. Mexicana 47:37-49. 7. McCoy, R.E. (ed.). 1983. Lethal yellowing of palms. Univ. Fla. Tech. Bull. No. 834. 100 pp. 8. McCoy, R.E. 1984. Mycoplasmalike organisms of plants and invertebrates, pp. 792-793. In: N.R. Krieg and J.G. Holt (eds.), Bergey's Manual of Systematic Bacteriology, Vol. 1. Williams and Wilkins, Baltimore/London. 214 9. McCoy, R.E., P.G. Markham. 1983. Multiplication of Phytomonas davidiin the leafhopper Euscelidius variegatus (Abstr.) Phytopathology 73:809. 10. McCoy, R.E., G. Martinez-Lopez. 1982. Phytomonasstaheliassociated with coconut and oil palm diseases in Colombia. Plant Disease 66:675-677. 11. McCoy, R.E., M.E. Miller, D.L. Thomas, J. Amador. 1980. Lethal decline of Phoenix palms in Texas associated with mycoplasmalike organisms. Plant Disease 64:1038-1039. 12. Parthasarathy, M.V., W.G. Van Slobbe, C. Soudant. 1976. Trypanosomatid flagellate in the phloem of diseased coconut palms. Science 192:1346-1348. 13. Plavsic-Banjac, B., P. Hunt, K. Maramorosch. 1972. Mycoplasmalike bodies associated with lethal yellowing disease of coconut palms. Phytopathology 62:298-299. 14. Seemueller, E. 1976. Investigation to demonstrate mycoplasmalike organisms in diseased plants by fluorescence microscopy. Acta Hortic. 67:109-112. 15. Thomas, D.L. 1979. Mycoplasmalike bodies associated with lethal declines of palms in Florida. Phytopathology 69:928-934. 16. Waters, H. 1978. A wilt disease of coconut from Trinidad associated with Phytomonas sp., a sieve tube restricted protozoan flagellate. Ann. Appl. Biol. 90:293-302. PROCEEDINGS of the CARIBBEAN FOOD CROPS SOCIETY-VOL. XX