PROC. ENTOMOL. SOC. WASH. 102(4), 2000, pp. 802-815 NEW HOST PLANT AND DISTRIBUTION RECORDS IN MEXICO FOR ANASTREPHA SPP., TOXOTRYPANA CURVICAUDA GERSTACKER, RHAGOLETIS ZOQUI BUSH, RHAGOLETIS SP., AND HEXACHAETA SP. (DIPTERA: TEPHRITIDAE) Martin Aluja, Jaime Pinero, Maurilio Lopez, Cesar Ruiz, Alberto Zuniga, Enrique Piedra, Francisco Diaz-Fleischer, and John Sivinski (MA, JP, ML, CR, AZ, EP) Institute de Ecologia, A.C., Apartado Postal 63, C.P 91000 Xalapa, Veracruz, Mexico (MA, e-mail:
[email protected] mx); (FD-F) Departamento de Desarrollo de Metodos, Campaiia Nacional Contra las Moscas de la Fruta, 2a Avenida Sur No. 5 (Altos), CR 30700 Tapachula, Chiapas, Mexico; (JS) Center for Medical, Agricultural and Veterinary Entomology, USDA ARS, 1700 SW 23rd Drive, RO. Box 14565, Gainesville, FL 32604, U.S.A. Abstract. — We report the results of a nine-year study (1990-1998), aimed at determin-ing the distribution of fruit flies (Diptera: Tephritidae) and identify their host plants in Veracruz, Mexico. Twenty Anastrepha species, Toxotrypana curvicauda and several un-identified Hexachaeta species were captured in McPhail traps. Among the 20 Anastrepha species, A. limae, A. dentata, and A. canalis are new records for Veracruz. Out of a total of 51 species of native, wild plants and exotic, cultivated plants collected in Veracruz, Mexico (representing 3,736 kg of fruit), 34 were infested by 13 Anastrepha species, 4 plants were infested by 4 Rhagoletis species, 2 plants were infested by Toxotrypana curvicauda, and one by an undescribed Hexachaeta species. Our observations include new host plant records for Anastrepha hamata (larvae feed only on seeds), A. bahiensis, A. chiclayae, A. fraterculus, A. obliqua, T. curvicauda, Rhagoletis zoqui, R. sp. and Hex-achaeta sp. We present host plant data based on size of fruit and degree of infestation, provide information on local names and fruiting phenology, and discuss our findings in light of their practical implications and with respect to the zoogeography of Mexican fruit flies. Resumen. — Reportamos los resultados de un estudio de nueve ailos (1990-1998), en-caminado a determinar la distribucion de moscas de la fruta (Diptera: Tephritidae) e identificar sus plantas hospederas en Veracruz, Mexico. Veinte especies de Anastrepha, Toxotrypana curvicauda y varias especies no identificadas de Hexachaeta fueron captu-radas en trampas McPhail. De estas especies A. limae, A. dentata y A. canalis representan nuevos reportes para Veracruz. De un total de 51 especies de plantas nativas (silvestres) y exoticas (cultivadas) colectadas en Veracruz, Mexico (representando 3,736 kg de fruta), 34 fueron infestadas por 1 3 especies de Anastrepha, otras 4 por 4 especies de Rhagoletis, 2 por Toxotrypana curvicauda y una por una especie no descrita de Hexachaeta. Nuestras observaciones incluyen nuevas plantas hospederas para Anastrepha hamata (las larvas se alimentan solo de semillas), A. bahiensis, A. chiclayae, A. fraterculus, A. obliqua, T. curvicauda, Rhagoletis zoqui, R. sp. y Hexachaeta sp. Presentamos informacion sobre plantas hospederas basada en el tamaiio de fruto y grado de infestacion, proporcionamos informacion acerca de nombres locales de los frutos, su fenologia de fructificacion y
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