Spodoptera frugiperda (J. E. SMITH, 1797) (LEPIDOPTERA: NOCTUIDAE), AFFECTING LETTUCE CROPS IN CERRO PUNTA

Abstract

Lettuce (Lactuca sativa L., 1753) is a leafy vegetable widely cultivated in Tierras Altas, Chiriquí; however, it is susceptible to being affected by various pests that feed on the foliage and whose presence compromises its possible commercialization in certain markets. Recently, reports of larvae feeding on the foliage of this vegetable in Cerro Punta were received, which was confirmed in the field that amounted to up to 70% presence, so the aim of the study was to identify the insect species related to these effects. To do this, two systematic samplings were carried out in farmers' plots (30 points per sampling), larvae and adult specimens that were found were also collected, to be analyzed in the laboratory, consulting specialized literature for identification. According to the results, the larva species corresponds to Spodoptera frugiperda (J. E. Smith, 1797) (Lepidoptera: Noctuidae), commonly known as fall armyworm; The adult found is also from S. frugiperda, coinciding with morphological characters described for the species such as the venation of the forewing. This insect is polyphagous and can affect a wide diversity of crops. The moth is widely distributed on the American continent and is the subject of multiple control measures. In addition to identification, biological aspects and recommendations for integrated pest management (IPM) are illustrated, considering cultural control, biological control, ethological control and chemical control.