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Alnus acuminata is a native species used in reforestation and industrial forestry programs in Colombia. It is currently attacked by an insect recently described as Corthylus zulmae, which is inhibiting the use of this plant. Establishing management strategies for this pest is required, which is why it is necessary to understand basic aspects of its biology. In this study we evaluated the population dynamics of the pest over one year through destructive sampling of affected trees. The adult flight period was followed using traps with attractants; observations on the life cycle were made by following the insect biological stages collected in the field; and substrates for rearing the insect were evaluated in the laboratory. The results showed that this insect reproduces in decaying trees or trunks in the soil with low humidity content. This insect showed greater flight activity when temperature was higher, and precipitation and relative humidity were lower. A description of the life stages was made and we estimated that a complete cycle might last more than 48 days and, that eggs could require around 28 days in order to develop into an adult. The artificial diets reported for rearing other coleopterans in the laboratory were not efficient for establishing a confined colony of C. zulmae.

JARAMILLO, J. L., OSPINA, C. M., GIL, Z. N., MONTOYA, E. C., & BENAVIDES, P. (2011). Advances on the biology of Corthylus zulmae (Coleoptera: Curculionidae) in Alnus acuminata (Betulaceae). Revista Colombiana De Entomología, 37(1), 48–55.

BEAVER, R.A. 1989. Insect-fungus relationships in the bark and ambrosia beetles. In: Insect-fungus interactions, ed. N. Wilding, N. M. Collins, P. M. Hammond and J. F. Webber. London: Academic Press.121-143.

BIEDERMANN P., H. W. 2007. Social behavior in sib mating fungus farmers. Intraand interspecific cooperation in ambrosia beetles. Masterarbeit der Philosophisch-naturwissenschaftlichen Fakultät der Universität Bern vorgelegt von. 85 p.

BRICEÑO, V. A. 2002. El Aliso, Alnus acuminata H.B.K., hospedero de dos especies de Chrysomelidae (Coleoptera) en los andes venezolanos. Revista Forestal Venezolana 46 (1): 53-57.

CIBRIAN T., D.; MENDEZ M., J. T.; CAMPOS B., R.; YATES, H. O.; FOLRES L., J. 1995. Insectos Forestales de México. Universidad Autónoma de Chapingo, Chapingo, Estado de México, México. 382 p.

COMSTOCK, J. H. 1962. An introduction to entomology. Comstock Publishing associates a division of Cornell University press. Ithaca, New York. 1064 p.

DEL VALLE, J. I.; GONZÁLEZ, H. 1988. Rendimiento y crecimiento del cerezo (Alnus jorullensis) en la región central andina, Colombia. Revista Facultad Nacional de Agronomía. Medellin

(1): 61-90.

FARRELL, B. D.; SEQUEIRA, A. S.; O’MEARA, B.; NORMARK, B. B.; CHUNG, J.H.; JORDAL, B. H. 2001. The evolution of agriculture in beetles (Curculionidae: Scolytinae and Platypodinae). Evolution 55: 2011-2027.

FINNEGAN, R. J. 1967. Notes on the Biology of the Pitted Ambrosia Beetle, Corthylus punctatissimus (Coleoptera: Scolytidae), in Ontario and Quebec. The Canadian Entomologist 99: 49-54.

FRAEDRICH, S. W.; HARRINGTON, T. C.; RABAGLIA, R. J.; ULYSHEN, M. D.; MAYFIELD, A. E.; HANULA, J. L.; EICKWORT, J. M.; MILLER, D. R. 2008. A fungal symbiont of the redbay ambrosia beetle causes a lethal wilt in redbay and other Lauraceae in the southeastern United States. Plant Disease 92: 215-224.

FRANCKE-GROSMANN. 1967. Ectosymbiosis in wood-inhabiting insects. In symbiosis. S. M. Henry (ed.), Academic Press. New York. Vol. II. p 141-205.

FURNISS, M. M.; WOO, J. Y.; DEYRUP, M. A.; ATKINSON, T. H. 1987. Prothoracic Mycangium on pine-infesting Pityoborus spp. (Coleoptera: Scolytidae). Annals of the Entomological Society of America 80: 692-696.

GIESE, R. L. 1967. The Columbian Timber Beetle, Corthylus columbianus (Coleoptera: Scolytidae). V. A description of the mycetangia. The Canadian Entomologist 99: 54-58.

GIL P., Z. N.; BUSTILLO P., A. E.; GOMEZ, D. E.; MARIN, M. P. 2004. Corthylus n. sp. (Coleoptera: Scolytidae), plaga del aliso en la cuenca de río Blanco en Colombia. Revista Colombiana de Entomología 30(2): 171-178.

HARRINGTON, T.C. 2005. Ecology and evolution of mycophagous bark beetles and their fungal partners. Pages 257-291 In: Ecological and Evolutionary Advances in Insect-Fungal Associations, F. E. Vega and M. Blackwell, eds. Oxford University Press.

HOLDRIDGE, L. 1987. Ecología basada en zonas de vida. IICA: 216 p.

KABIR A. K. M. F.; GIESE R. L. 1966. The Columbian Timber Beetle, Corthylus columbianus (Coleoptera: Scolytidae). I. Biology of the Beetle. Annals of the Entomological Society of America 59 (5) 883-894.

KUHNHOLZ, S.; BORDEN J. H.; UZUNOVIC, A. 2001. Secondary ambrosia beetles in apparently healthy trees: adaptations, potential causes and suggested research. Integrated Pest Management Reviews 6: 209-219.

MIZUNO, T.; KAJIMURA, H. 2002. Reproduction of the ambrosía beetle, Xileborus pfeili (Ratzeburg) ( Col., Scolytidae), in semiartificial diet. Journal of Applied Entomology 126: 455-462.

NORMARK, B. B.; JORDAL, B. H.; FARRELL, B. D. 1999. Origin of a haplodiploid beetle lineage. Proceedings of The Royal Society Biological Sciences 266: 1-7.

OSPINA P., C. M.; HERNANDEZ R., R. J.; GOMEZ D., D. E.; GODOY B., J. A.; ARISTIZABAL V., F. A.; PATIÑO C., J. N.; MEDINA O., J. A. 2005. Serie cartillas divulgativas. El Aliso o Cerezo Alnus acuminata H. B. K. ssp. acuminata. Guías silviculturales para el manejo de especies forestales con miras a la producción de madera en la zona andina Colombiana. FNC Cenicafé. 36 p.

PORTILLA R., M.; STREETT, D. 2006. Nuevas técnicas de producción masiva automatizada de Hypothenemus hampei Ferrari sobre la dieta artificial cenibroca modificada. Revista Cenicafé 57(1):37-50.

POSADA O, L. 1989. Lista de insectos dañinos y otras plagas en Colombia. Instituto Colombiano Agropecuario ICA, Bogotá, Boletín Técnico No. 43. 662 p.

ROLING, M. P.; KEARBY, W. H. 1975. Seasonal flight and vertical distribution of scolytidae attracted to ethanol in an oak-hickory forest in Missouri. The Canadian Entomologist 107: 1315-1320. STEINHAUS, E. A. 1947. Insect Microbiology. Comstock Publishing Company. Ithaca, New York. 763 p.

TANADA, Y.; KAYA, H. K. 1993. Insect pathology. Academic Press, inc. San Diego. Estados unidos. 666 p.

WOOD, S. L. 1982. The bark and ambrosia beetles of North and Central America (Coleoptera: Scolytidae) a taxonomic monograph. Great Basin Naturalist Memoires (Utah-EE.UU). (6) 1359 p.

WOOD S. L., STEVENS G. C., LEZAMA H. J. 1992. Los Scolytidae (Coleoptera) de Costa Rica: Clave de la subfamilia Scolytinae, Tribu Cothylini. Revista de Biología Tropical 40 (3): 247-286.

WOOD, S. L. 2007. Bark and ambrosia beetles of South America (Coleoptera: Scolytidae). M. L. Bean Life Science Museum. Brigham Young University. (Utah-EE.UU) 842 p.