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A Survey of Fall Armyworm (Lepidoptera: Noctuidae) Parasitoids in the Mexican States of Michoacán, Colima, Jalisco, and Tamaulipas
Fall armyworm larvae, Spodoptera frugiperda (J. E. Smith) were collected from whorl stage corn or sorghum in the states of Michoacán, Colima, and Jalisco in August, and Tamaulipas, Mexico in September 1998. Eleven species of hymenopteran parasitoids were recovered representing 3 families: Ichneumoni...
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Published in: | The Florida entomologist 2001-03, Vol.84 (1), p.31-36 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
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Summary: | Fall armyworm larvae, Spodoptera frugiperda (J. E. Smith) were collected from whorl stage corn or sorghum in the states of Michoacán, Colima, and Jalisco in August, and Tamaulipas, Mexico in September 1998. Eleven species of hymenopteran parasitoids were recovered representing 3 families: Ichneumonidae (Ophion flavidus Brulle, Campoletis flavicincta Ashmead, and Pristomerus spinator F.); Braconidae (Aleiodes laphygmae Viereck, Cotesia marginiventris Cresson, Meteorus laphygmae Viereck, Meteorus sp., Chelonus insularis Cresson, Chelonus sp. probably cautus Cresson, and Chelonus sp.); and Eulophidae (Euplectrus platyhypenae Howard). The overall rate of parasitism was 11.3%, based on 2219 larvae collected. The highest rate of parasitism from a single collection was 26.5%, representing 6 species of parasitoids in Michoacán. The next highest rate of parasitism, 23%, was by a single species, C. flavicincta, in Michoacán. The most widely distributed species was P. spinator, occurring in 12 collections from 3 states. Chelonus sp. was collected from all four states in only 6 collections. The greater diversity of parasitoids and higher rates of parasitism in Michoacán may be related to the more diverse habitat with more forests, orchards, and pastures near the cornfields in that state. /// Larvas de gusano cogollero, Spodoptera frugiperda (J. E. Smith) fueron colectadas de maíz y sorgo para grano en etapa de verticilio en los estados de Michoacán, Colima y Jalisco durante Agosto, y en Tamaulipas, México durante Septiembre de 1998. Once especies de parasitoides himenópteros se recuperaron y representaron a 3 familias: Ichneumonidae (Opion flavidus Brulle, Campoletis flavicincta Ashmed, y Pristomerus spinator F.); Braconidae (Aleiodes laphygmae Viereck, Meteorus sp., Chelonus insularis Cresson, Chelonus sp. probablemente cautus Cesson, y Chelonus sp.); y Eulophidae (Euplectrus platyhypenae Howard). La proporción general de parasitismo fue de 11.3%, basada en 2219 larvas colectadas. La proporción más alta de parasitismo proveniente de una colecta simple fue de 26.5%, representando 6 especies de parasitoides en Michoacán. La siguiente proporción más alta, 23%, fue para una especie simple, C. flavicincta, en Michoacán. La especie distribuida más ampliamente fue P. spinator, presentándose en 12 colectas hechas en 3 estados. Chelonus sp. se colectó en los cuatro estados sólo en 6 colectas. La diversidad más grande de parasitoides y proporciones más altas de parasitismo en |
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ISSN: | 0015-4040 1938-5102 |
DOI: | 10.2307/3496659 |