First report of occurrence of leaf beetle, Madurasia undulatovittata Motschulsky, (Coleoptera: Chrysomelidae) on Indian bean from Gujarat

Abstract

A field study was conducted to document the newly reported insect pests of Indian bean, Madurasia undulatovittata Motschulsky, (Coleoptera: Chrysomelidae) in South Gujarat during 2024. Infestation of this pest commenced from the seedling stage of the crop coincides 2nd to 4th week of October when plants have 3 to 5 leaves. Infestation was found in sporadic nature. Adults were observed to feed solitary as well as gregariously (2 to 7 adults with average of 4.3 per leaf). Extensive feeding can lead to visible damage from a distance due to the numerous small holes and glistening appearance of the leaves due to chlorophyll scraping. Adults were also scraped the stem of young plants. This is the first report of M. undulatovittata infestation on Indian bean from Gujarat.