<p>There is little information on the potential benefits of urban green areas for insect pollinators in tropical regions, despite benefits reported in other regions. Here, we examine the differences in the taxonomic diversity of insect pollinators among gardens, agroecological farms, and the semi-natural areas in a biodiversity hotspot in an urban area in Nigeria. The focus was on the extent to which floral and nesting resources influence the diversity of insect pollinators. Results showed that there was no difference in the species composition of insect pollinators in these different land use categories. However, farms had higher abundance and species richness among insect pollinators compared to gardens but not compared to semi-natural areas. In addition, insect pollinators in gardens had a similar abundance and species richness to those of the semi-natural areas for some taxa. This shows that well-managed gardens and agroecological farms play an important role in insect pollinator conservation, in addition to the semi-natural areas within tropical urban landscapes. Furthermore, for most taxa, many of the floral and nesting variables that influenced their species composition varied among land use categories. Importantly, flowering plants had an important positive influence on the insect pollinators in each area, suggesting that floral resources are key for insect pollinators continued presence. Finally, there was a significant negative impact of nesting variables on most species across all land-use types. This suggests that the insects were responding more to flowering variables, or that the nesting variables measured here may not have accurately reflected the specific nesting requirements of the species present. This suggests the need for further testing for the exact nesting requirements in these areas and incorporating management for improved floral resources in tropical urban green spaces.</p>