Identification and Community Structure of Pests on Eggplant (Solanum melongena L.)
Abstract
The eggplant (Solanum melongena L.) is an important horticultural crop whose productivity often decreases due to pest infestations. The objective of this study was to identify pest species and analyze their relative abundance, diversity, evenness, and dominance in an eggplant field at the Educational Farm of Samudra University in Langsa City, Aceh, Indonesia. The research was conducted in October 2025 using a survey method with yellow sticky traps installed as insect sampling tools. Observations were carried out twice a week, and insects were identified based on their morphological characteristics. The results revealed six pest species belonging to four orders. Bactrocera dorsalis was the dominant species (48.42%), followed by Siphanta acuta (38.95%). The pest community structure was categorized as moderate based on the following indices: Shannon–Wiener diversity index (H’ = 1.12), evenness index (J’ = 0.63), and Simpson dominance index (C = 0.39).
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