An Assessment of Floral Visitor Diversity and Visitation Patterns Associated with Bauhinia variegata L. in a Semi-Urban South African Environment

Pollination-related interactions are essential for maintaining plant reproduction and biodiversity in both natural and human-modified landscapes. Understanding floral visitor assemblages associated with urban and peri-urban vegetation can provide valuable insights into ecological processes that support ecosystem functioning. This study investigated floral visitor diversity, visitation frequency, and floral morphological characteristics of Bauhinia variegata L. in a semi-urban environment at the University of Venda, South Africa. Field observations conducted during the flowering season recorded a diverse assemblage of floral visitors, including honeybees (Apis mellifera and Apis cerana), carpenter bees (Xylocopa spp.), sunbirds (Cinnyris talatala), butterflies (Papilio polytes), paper wasps (Polistes olivaceus), and bee flies (Bombomyia discoidea). Among these visitor groups, honeybees exhibited significantly higher visitation frequencies than other floral visitors (p < 0.001). Measurements of floral structures revealed relatively consistent dimensions of petals, stamens, and styles, indicating a stable floral architecture characterized by exposed reproductive organs and accessible floral rewards. The findings demonstrate that B. variegata supports a diverse community of floral visitors within a semi-urban landscape and highlights the prominent role of bees in floral visitation patterns. However, because pollen transfer, fruit set, and reproductive success were not directly assessed, conclusions regarding pollination effectiveness cannot be drawn. Future studies should evaluate the behavioural interactions of floral visitors and their contributions to plant reproductive success. These findings contribute baseline information on the floral visitor ecology of B. variegata in South Africa and provide a foundation for future investigations of plant–floral visitor interactions in urban and peri-urban ecosystems.