Hostname: page-component-586b7cd67f-t8hqh Total loading time: 0 Render date: 2024-11-22T05:45:09.210Z Has data issue: false hasContentIssue false

Introduction and spread of the cassava green mite, Mononychellus tanajoa (Bondar) (Acari: Tetranychidae), an exotic pest in Africa and the search for appropriate control methods: a review

Published online by Cambridge University Press:  10 July 2009

J. S. Yaninek
Affiliation:
International Institute of Tropical Agriculture, PMB 5320, Oyo Road, Ibadan, Nigeria
H. R. Herren
Affiliation:
International Institute of Tropical Agriculture, PMB 5320, Oyo Road, Ibadan, Nigeria

Abstract

Mononychellus tanajoa (Bondar), a spider mite new to Africa, was discovered on cassava in Uganda in 1971. This exotic mite of Neotropical origin has since spread to 27 countries, causing an estimated 13–80% reduction in cassava yield. The history of its introduction and spread in Africa is reported, and present knowledge on the taxonomy, biology, ecology and pest status of the mite, and the evolution of strategies to control it are reviewed. While attempts have been made to control M. tanajoa, it remains a serious pest in most areas. The prospects for classical biological control as an appropriate control strategy are discussed.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Akinlosotu, T. A. (1982). Seasonal trend of green spider mite, Mononychellus tanajoa population on cassava, Manihot esculenta and its relationship with weather factors at Moor Plantation.—Insect Sci. Applic. 3, 251254.Google Scholar
Akinlosotu, T. A. & Leuschner, K. (1981). Outbreak of two new cassava pests (Mononychellus tanajoa and Phenacoccus manihoti) in southwestern Nigeria.—Tropical Pest Management 27, 247250.CrossRefGoogle Scholar
Ayanru, D. K. G. & Sharma, V. C. (1983). Chlorophyll depletion in leaves of field-grown cassava clones infested by cassava green spider mites, Mononychellus tanajoa (Bondar) (Acarina: Tetranychidae).—Trop. Agric., Trin. 60, 8588.Google Scholar
Ayanru, D. K. G. & Sharma, V. C. (1984). Changes in total cyanide content of tissues from cassava plants infested by mites (Mononychellus tanajoa) and mealybugs (Phenacoccus manihoti).—Agric. Ecosystems and Environ. 12, 3546.CrossRefGoogle Scholar
Baker, J. E. & Connell, W. A. (1963). The morphology of the mouthparts of Tetranychus atlanticus and observations on feeding by this mite on soybeans.—Ann. ent. Soc. Am. 56, 733736.CrossRefGoogle Scholar
Bellotti, A. C. (1978). An overview of cassava entomology.—pp. 29–39 in Brekelbaum, T., Bellotti, A. & Lozano, J. C. (Eds.). Proceedings, Cassava Protection Workshop, CIAT, Cali, Colombia, 7–12 11, 1977-244 pp. Cali, Colombia, Cent. Int. Agric. Trop. (Series CE-14).Google Scholar
Bellotti, A. C. & Byrne, D. (1979). Host plant resistance to mite pests of cassava.—pp. 13–21 in Rodriguez, J. G. (Ed.). Recent advances in acarology. Volume I.—631 pp. New York, Academic Press.Google Scholar
Bellotti, A. C., Byrne, D. H., Hershey, C. H., Vargas, O. H. & Varela, A. M. (1985 a). The potential of host plant resistance in cassava for control of mites and mealybugs.—pp. 417–439 in Cock, J. H. & Reyes, J. A. (Eds). Cassava: research production and utilization, cassava program.—745 pp. Cali, Colombia, Cent. Int. Agric. Trop.Google Scholar
Bellotti, A. C., Hershey, C. & Vargas, O. (1985 b). Recent advances in resistance to insect and mite pests of cassava (Manihot esculenta Crantz).—pp. 441–470 in Cock, J. H. & Reyes, J. A. (Eds). Cassava: research, production and utilization, cassava program.—745 pp. Cali, Colombia, Cent. Int. Agric. Trop.Google Scholar
Bellotti, A. C., Reyes, J. A., Guerrero, J. M. & Varela, A. M. (1985 c). The mealybug and cassava green spider mite complex in the Americas: problems of and potential for biological control.—pp. 393–416 in Cock, J. H. & Reyes, J. A. (Eds). Cassava: research, production and utilization, cassava program.—745pp. Cali, Colombia, Cent. Int. Agric. Trop.Google Scholar
Bellotti, A. & van Schoonhoven, A. (1978). Mite and insect pests of cassava.—A. Rev. Ent. 23, 3967.CrossRefGoogle ScholarPubMed
Bennett, F. D. (1986). Biological control of mealybugs: past successes and safety records.—pp. 15–24 in Herren, H. R., Hennessey, R. N. & Bitterli, R. (Eds). Biological control and host plant resistance to control the cassava mealybug and green mite in Africa. Proceedings of an International Workshop, IFAD, OAU/STRC, IITA, 6–10 12, 1982, Ibadan, Nigeria.—154 pp. Ibadan, Nigeria, Int. Inst. Trop. Agric.Google Scholar
Bondar, G. (1938). Notas entomologicas da Bahia. III.—Revta Ent., Rio de J. 9, 441445.Google Scholar
Boudreaux, H. B. (1963). Biological aspects of some phytophagous mites.—A. Rev. Ent. 8, 137154.CrossRefGoogle Scholar
Byrne, D. H., Bellotti, A. C. & Guerrero, J. M. (1983). The cassava mites.—Tropical Pest Management 29, 378394.CrossRefGoogle Scholar
Byrne, D. H., Guerrero, J. M., Bellotti, A. C. & Gracen, V. E. (1982 a). Yield and plant growth responses of Mononychellus mite resistant and susceptible cassava cultivars under protected vs. infested conditions.—Crop Sci. 22, 486490.CrossRefGoogle Scholar
Byrne, D. H., Guerrero, J. M., Bellotti, A. C. & Gracen, V. E. (1982 b). Behavior and development of Mononychellus tanajoa (Acari: Tetranychidae) on resistant and susceptible cultivars of cassava.—J. econ. Ent. 75, 924927.CrossRefGoogle Scholar
Cock, J. H. (1978). A physiological basis of yield loss in cassava due to pests.—pp. 9–16 in Brekelbaum, T., Bellotti, A. & Lozano, J. C. (Eds). Proceedings, Cassava Protection Workshop, CIAT, Cali, Colombia, 7–12 11, 1977–244 pp. Cali, Colombia, Cent. Int. Agric. Trop. (Series CE-14).Google Scholar
Cock, J. H. (1982). Cassava: a basic energy source in the tropics.—Science, N.Y. 218, 755762.CrossRefGoogle ScholarPubMed
Doreste, E. (1981). Acaros del genero Mononychellus Wainstein (Acari Tetranychidae) asociados con la yuca (Manihot spp.) en Venezuela.—Boln Ent. venez. (N.S.) 1, 119130.Google Scholar
Doreste, S. E. & Aponte, L. O. (1979). Efecto de los ataques del complejo de ácaros Tetranychidae, en los rendimientos del cultivo de la yuca.—Revta Fac. Agron. Univ. Cent. Venez. 10, 105119.Google Scholar
Farias, A. R. N., Zem, A. C., Gomes, J. de C., Macedo, M. C. M. & Flechtmann, C. H. W. (1979). Adubação mineral e populacao de Mononychellus tanajoa em mandioca.—Pesqui. Agropecu. Bras. 14, 311313.Google Scholar
Flechtmann, C. H. W. (1978). The cassava mite complex: taxonomy and identification.—pp. 143–153 in Brekelbaum, T., Bellotti, A. & Lozano, J. C. (Eds). Proceedings, Cassava Protection Workshop, CIAT, Cali, Colombia, 7–12 11, 1977-244 pp. Cali, Colombia, Cent. Int. Agric. Trop. (Series CE-14).Google Scholar
Flechtmann, C. H. W. (1982). The cassava mite complex. III—New distribution records, mainly from Colombia and Africa. References to other plants.—Anais Esc. sup. Agric. ‘Luiz Queiroz’ 39, 809813.CrossRefGoogle Scholar
Flechtmann, C. H. W. (1986). The cassava green spider mite complex - taxonomy (Acari, Tetranychidae, Mononychellus spp.).—pp. 70–80 in Herren, H. R., Hennessey, R. N. & Bitterli, R. (Eds). Biological control and host plant resistance to control the cassava mealybug and green mite in Africa. Proceedings of an International Workshop, IFAD, OAU/STRC, IITA, 12 6–10, 1982, Ibadan, Nigeria.—154 pp. Ibadan, Nigeria, Int. Inst. Trop. Agric.Google Scholar
Flechtmann, C. H. W. & Baker, E. W. (1970). A preliminary report on the Tetranychidae (Acarina) of Brazil.—Ann. ent. Soc. Am. 63, 156163.CrossRefGoogle Scholar
Flechtmann, C. H. W. & Bastos, J. M. (1972). Acaros Tetranychoidae do estado do Ceara, Brasil.—Ciencia Agron. Fortaleza 2, 8390.Google Scholar
Girling, D. J., Bennett, F. D. & Yaseen, M. (1978). Biological control of the green mite Mononychellus tanajoa (Bondar) (Acarina: Tetranychidae) in Africa.—pp. 165–170 in Brekelbaum, T., Bellotti, A. & Lozano, J. C. (Eds). Proceedings, Cassava Protection Workshop, CIAT, Cali, Colombia, 7–12 11, 1977.—244 pp. Cali, Colombia, Cent. Int. Agric. Trop. (Series CE-14).Google Scholar
Greathead, A. H., Markham, R. H., Murphy, R. J., Murphy, S. T. & Robertson, I. A. D. (Eds) (1984). Integrated pest management of cassava green mite. Proceedings of a Regional Training Workshop in East Africa, 30 04-4 05, 1984-125 pp. Ascot, Berks, UK, Commonw. Inst. Biol. Control.Google Scholar
Gutierrez, A. P. & Yaninek, J. S. (1986). An ecological perspective on plant breeding.—pp. 32–46 in Herren, H. R., Hennessey, R. N. & Bitterli, R. (Eds). Biological control and host plant resistance to control the cassava mealybug and green mite in Africa. Proceedings of an International Workshop, IFAD, OAU/STRC, IITA, 6–10 12, 1982, Ibadan, Nigeria.—154 pp. Ibadan, Nigeria, Int. Inst. Trop. Agric.Google Scholar
Hahn, S. K., Leuschner, K., Ezeilo, W., Carpenter, A. J., Khatibu, A. I. & Constantin, C. A. (1980). Resistance of cassava clones to cassava green mite, Mononychellus tanajoa.Tropical Pest Management 26, 265267.CrossRefGoogle Scholar
Hahn, S. K. & Keyser, J. (1985). Cassava: a basic food of Africa.—Outl. Agric. 14, 95100.CrossRefGoogle Scholar
Herren, H. R. (1982). IITA's role in integrated control of cassava mealybug (Phenacoccus manihoti Mat-Ferr) and green spider mite (Mononychellus tanajoa (Bondar) in Africa.—pp. 154–157 in Okoli, O. O., Enyinnia, T., Igbokwe, M. C., Odurukwe, S. O., Okeke, J. E. & Okereke, H. E. (Eds). Proceedings of the International Workshop on Control of Cassava Mealybug and Green Spider Mite, 10 1216, 1981. National Root Crops Research Institute. Umudike, Nigeria.—194 pp. Umuahia, Nigeria, Guinea Printing Press.Google Scholar
Herren, H. R. (1984). Africa-wide biological control programme of cassava mealybug (Phenacoccus manihoti Matile-Ferrero, Homoptera: Pseudococcidae) and cassava green mite complex (Mononychellus spp., Acarina: Tetranychidae).—pp. 63–66 in Greathead, A. H., Markham, R. H., Murphy, R. J., Murphy, S. T. & Robertson, I. A. D. (Eds). Integrated pest management of cassava green mite. Proceedings of a Regional Training Workshop in East Africa, 30 04-4 05, 1984.-125 pp. Ascot, Berks, UK, Commonw. Inst. Biol. Control.Google Scholar
Herren, H. R. & Bennett, F. D. (1984). Cassava pests, their spread and control.—pp. 110–114 in Hawksworth, D. L. (Ed.). Advancing agricultural production in Africa. Proceedings of CAB's First Scientific Conference, Arusha, Tanzania, 12–18 02, 1984.—454 pp. Slough, UK, Commonw. Agric. Bur.Google Scholar
Huffaker, C. B., van de Vrie, M. & McMurtry, J. A. (1970). Ecology of tetranychid mites and their natural enemies: a review. II. Tetranychid populations and their possible control by predators: an evaluation.—Hilgardia 40, 391458.CrossRefGoogle Scholar
Ingram, W. R. (1986). Potential for the biocontrol of green cassava mites in Africa.—pp. 103–115 in Herren, H. R., Hennessey, R. N. & Bitterli, R. (Eds). Biological control and host plant resistance to control the cassava mealybug and green mite in Africa. Proceedings of an International workshop, IFAD, OAU/STRC, IITA, 12 6–10, 1982, Ibadan, Nigeria.—154 pp. Ibadan, Nigeria, Int. Inst. Trop. Agric.Google Scholar
IITA (International Institute of Tropical Agriculture) (1976). Annual report for 1975.—219 pp. Ibadan, Nigeria.Google Scholar
IITA (International Institute of Tropical Agriculture) (1978). Annual report for 1977.—98 pp. Ibadan, Nigeria.Google Scholar
IITA (International Institute of Tropical Agriculture) (1985). Annual report for 1984.—238 pp. Ibadan, Nigeria.Google Scholar
IITA (International Institute of Tropical Agriculture) (1986). IITA Root and Tuber Improvement Program, Annual Report 1985.—177 pp. Ibadan, Nigeria.Google Scholar
Itimu, O. A. & Sauti, R. F. N. (1982). Cassava green spider mite (GSM) (Mononychellus tanajoa) (Bondar): its history and possible control measures in Malawi.—8 pp. Unpublished research report, Lunyangwa Agricultural Research Station, Malawi.Google Scholar
Jones, W. O. (1959). Manioc in Africa.—315 pp. Stanford, California, Stanford Univ. Press.Google Scholar
Leuschner, K. (1980). Biology, ecology and control of the green spider mite and cassava mealybug.—pp. 123–128 in Ezumah, H. C. (Ed.). Cassava production and extension in Central Africa. Proceedings of a Workshop on Cassava Production and Extension in Central Africa held at Mbanza-Ngungu, Zaire, 19–22 05, 1980.-280 pp. Ibadan, Nigeria, Int. Inst. Trop. Agric. (Proc. Series No. 4).Google Scholar
Leuschner, K. (1982). Pest control for cassava and sweet potato.—pp. 60–64 in Root crops in eastern Africa. Proceedings of a workshop held at Kigali, Rwanda, 23–27 11, 1980.-128 pp. Ottawa, Canada, Int. Dev. Res. Cent.Google Scholar
Lyon, W. F. (1973). A plant-feeding mite Mononychellus tanajoa (Bondar) (Acarina: Tetranychidae) new to the African continent threatens cassava (Manihot esculenta Crantz) in Uganda, East Africa.—Pest Artic. & News Summ. 19, 3637.Google Scholar
Lyon, W. F. (1974). A green cassava mite recently found in Africa.—Pl. Prot. Bull. F.A.O. 22, 1113.Google Scholar
MacFarlane, D. (1984). Key to spider mites (Tetranychidae) recorded on cassava in Africa. With a note on slide preparation.—pp. 31–35 in Greathead, A. H., Markham, R. H., Murphy, R. J., Murphy, S. T. & Robertson, I. A. D. (Eds). Integrated pest management of cassava green mite. Proceedings of a Regional Training Workshop in East Africa, 30 04-4 05 1984.-125 pp. Ascot, Berks, UK, Commonw. Inst. Biol. Control.Google Scholar
McMurtry, J. A. (1982). The use of phytoseiids for biological control: progress and future prospects.—pp. 23–48 in Hoy, M. A. (Ed.). Recent advances in knowledge of the Phytoseiidae. Proceedings of a Formal Conference of the Acarology Society of America held at the Entomological Society of America Meeting, San Diego, 12 1981.-92 pp. Berkeley, California, Div. Agric. Sci. Univ. Calif. (Publication 3284).Google Scholar
McMurtry, J. A. (1983). Phytoseiid predators in orchard systems: a classical biological control success story.—pp. 21–26 in Hoy, M. A., Cunningham, G. L. & Knutson, L. (Eds). Biological control of pests by mites. Proceedings of a conference held April 5–7, 1982 at the University of California, Berkeley.—185 pp. Berkeley, California, Agric. Exp. Stn, Div. Agric. and Nat. Resour., Univ. Calif. (Special Publication 3304).Google Scholar
McMurtry, J. A., Huffaker, C. B. & van de Vrie, M. (1970). Ecology of tetranychid mites and their natural enemies: a review. I. Tetranychid enemies: their biological characters and the impact of spray practices.—Hilgardia 40, 331390.CrossRefGoogle Scholar
Meyer, M. K. P. S. (1974). A revision of the Tetranychidae of Africa (Acari) with a key to the genera of the world.—Entomology Mem. Dep. agric. tech. Serv. Repub. S. Afr. no. 36, 292 pp.Google Scholar
Msabaha, M. A. M. (1984). Cassava production and constraints in mainland Tanzania.—pp. 101–105 in Greathead, A. H., Markham, R. H., Murphy, R. J., Murphy, S. T. & Robertson, I. A. D. (Eds). Integrated pest management of cassava green mite. Proceedings of a Regional Training Workshop in East Africa, 30 04—4 May, 1984.-125 pp. Ascot, Berks, UK, Commonw. Inst. Biol. Control.Google Scholar
Murphy, S. T. (1984). Biological control of the cassava green mite (Mononychellus spp.) in East Africa.—pp. 55–61 in Greathead, A. H., Markham, R. H., Murphy, R. J., Murphy, S. T. & Robertson, I. A. D. (Eds.). Integrated pest management of cassava green mite. Proceedings of a Regional Training Workshop in East Africa, 30 04-4 05, 1984.-125 pp. Ascot, Berks, UK, Commonw. Inst. Biol. Control.Google Scholar
Ndayiragije, P. (1984). Cassava green mite (Mononychellus tanajoa (Bondar) in Burundi.—pp. 67–73 in Greathead, A. H., Markham, R. H., Murphy, R. J., Murphy, S. T. & Robertson, I. A. D. (Eds). Integrated pest management of cassava green mite. Proceedings of a Regional Training Workshop in East Africa, 30 04-4 05, 1984–125 pp. Ascot, Berks, UK, Commonw. Inst. Biol. Control.Google Scholar
Nyiira, Z. M. (1972). Report of investigation of cassava mite, Mononychellus tanajoa (Bondar).— 14 pp. Unpublished report, Kawanda Research Station, Kampala, Uganda.Google Scholar
Nyiira, Z. M. (1976). Advances in research on the economic significance of the green cassava mite (Mononychellus tanajoa) in Uganda.—pp. 27–29 in Terry, E. & MacIntyre, R. (Eds). The international exchange and testing of cassava germ plasm in Africa. Proceedings of an Interdisciplinary Workshop held at IITA. Ibadan, Nigeria, 17–21 November 1975.—59 pp. Ottawa, Int. Dev. Res. Cent. (IDRC-063e).Google Scholar
Nyiira, Z. M. (1977). Population dynamics of the green mite and its predator Oligota.—pp. 193–197 in Cock, J., MacIntyre, R. & Graham, M. (Eds). Proceedings of the Fourth Symposium of the International Society for Tropical Root Crops held at CIAT, Cali, Colombia, 1–7 08, 1976.-277 pp. Ottawa, Int. Dev. Res. Cent. (IDRC-080e).Google Scholar
Nyiira, Z. M. (1978). Mononychellus tanajoa (Bondar): biology, ecology and economic importance.—pp. 155–159 in Brekelbaum, T., Bellotti, A. & Lozano, J. C. (Eds). Proceedings, Cassava Protection Workshop, CIAT, Cali, Colombia, 7–12 11, 1977.— 244 pp. Cali, Colombia, Cent. Int. Agric. Trop. (Series CE-14).Google Scholar
Nyiira, Z. M. (1982 a). Cassava green mite: its distribution and possible control.—pp. 65–67 in Root crops in eastern Africa. Proceedings of a workshop held at Kigali, Rwanda, 23–27 11, 1980.-128 pp. Ottawa, Canada, Int. Dev. Res. Cent.Google Scholar
Nyiira, Z. M. (1982 b). Mononychellus tanajoa (Bondar): implications and approach to its management.—pp. 4764in Okoli, O. O., Enyinnia, T., Igbokwe, M. C., Odurukwe, S. O., Okeke, J. E. & Okereke, H. E. (Eds). Proceedings of the International Workshop on Control of Cassava Mealybug and Green Spider Mite 10 12–16, 1981. National Root Crops Research Institute, Umudike, Nigeria.—194 pp. Umuahia, Nigeria, Guinea Printing Press.Google Scholar
Nyiira, Z. M. & Mutinga, M. J. (1977). Tetranychidae pests of cassava, Manihot esculenta Crantz, in Uganda and their natural enemies.—E. Afr. agric. For. J. 43, 14.CrossRefGoogle Scholar
Rodríguez, J. G. (1978). The biology and ecology of the tetranychid mite complex in cassava in perspective.—pp. 171–175 in Brekelbaum, T., Bellotti, A. & Lozano, J. C. (Eds). Proceedings, Cassava Protection Workshop, CIAT, Cali, Colombia, 7–12 11, 1977.- 244 pp., Cali, Colombia, Cent. Int. Agric. Trop. (Series CE-14).Google Scholar
Samways, M. J. (1979). Immigration, population growth and mortality of insects and mites on cassava in Brazil.—Bull. ent. Res. 69, 491505.CrossRefGoogle Scholar
Samways, M. J. & Ciociola, A. I. (1980). O complexo de artrópodos da mandioca (Manihot esculenta Crantz) em lavras, Minas Gerais, Brasil.—An. Soc. Entomol. Bras. 9, 310.CrossRefGoogle Scholar
Shukla, P. T. (1976). Preliminary report on the green mite (Mononychellus tanajoa, Bondar) resistance in Tanzanian local cassava varieties.—E. Afr. agric. For. J. 42, 5559.Google Scholar
Silvestre, P. & Arraudeau, M. (1983). Le manioc.—262 pp. Paris, Maisonneuve & Larose (Techniques agricoles et productions tropicales, XXXII).Google Scholar
Tuttle, D. M., Baker, E. W. & Sales, F. M. (1977). Spider mites (Tetranychidae: Acarina) of the State of Ceara, Brazil.—Int. J. Acarol. 3, 18.CrossRefGoogle Scholar
Wainstein, B. A. (1971). Mononychellus, a new name for Mononychus (Acariformes. Tetranychidae) [in Russian].—Zool. Zh. 50, 589.Google Scholar
Yaninek, J. S. (1985). Cassava green mites and the Africa-wide Biological Control Programme at IITA.—IITA Res. Briefs 6 (3), 2.Google Scholar
Yaninek, J. S. & Herren, H. R. (1986). CGM species dilemma.—p. 56 in IITA Root and Tuber Improvement Program, Annual Report 1985.—177 pp. Ibadan, Nigeria, Inst. Trop. Agric.Google Scholar
Yaninek, J. S. & Bellotti, A. C. (in press). Exploration for natural enemies of cassava green mites based on agrometeorological criteria. Proceedings of the World Meteorological Organization/ International Institute of Tropical Agriculture Seminar on Agrometeorology and Crop Protection in the Lowland Humid and Subhumid Tropics, Cotonou, Benin, 7–11 July, 1986.Google Scholar
Yaninek, J. S. & Herren, H. R. (in press). Biological control of cassava pests with special reference to cassava green mites. Proceedings of an Eastern and Southern Africa Regional Root Crop Workshop in Kampala, Uganda, 10–14 December, 1984.—Ibadan, Nigeria, IITA.Google Scholar
Yaseen, M. (1977). Preliminary investigations on the biology and ecology of the green cassava mite Mononychellus tanajoa (Bondar) in Trinidad.—Tech. Bull. Commonw. Inst. biol. Control no. 18, 8597.Google Scholar
Yaseen, M. (1986). Explorations for natural enemies of Phenacoccus manihoti and Mononychellus tanajoa: the challenge, the achievements.—pp. 81102in Herren, H. R., Hennessey, R. N. & Bitterli, R. (Eds.). Biological control and host plant resistance to control the cassava mealybug and green mite in Africa. Proceedings of an International Workshop, IFAD, OAU/STRC, IITA, 12 6–10, 1982. Ibadan. Nigeria.—154 pp. Ibadan, Nigeria, Int. Inst. Trop. Agric.Google Scholar
Yaseen, M. & Bennett, F. D. (1977). Distribution, biology, and population dynamics of the green cassava mite in the neotropics.—pp. 197–202 in Cock, J., MacIntyre, R. & Graham, M. (Eds). Proceedings of the Fourth Symposium of the International Society for Tropical Root Crops held at CIAT, Cali, Colombia, 1–7 August, 1976.—277 pp. Ottawa, Int. Dev. Res. Cent. (IDRC-080e).Google Scholar