author(s)
Muchamad Nur Cholis, Tri Atmowidi and Sih Kahono

abstract
Insects are an effective pollinator to increase agricultural products. Knowledge of the diversity of plant pollinating insects is needed for strategy development of crop production. Pummelo (Citrus maxima (Burm) Merr.) is a monoecious plant with perfect flower. Most pummelo varieties have self-incompatibilities and require insects as pollinating agents. The research aims to study the diversity and abundance of pollinating insects of pummelo cv. Nambangan in East Java, Indonesia. Results showed that 17,401 individuals of insects belong to twelve species visited pummelo flowers. Nine species of visiting insects were potential as pollinator agents of pummelo, i.e. honey bee (Apis cerana), stingless bee (Tetragonula laeviceps), Ceratina sp., carpenter bees (Xylocopa confusa and Xylocopa latipes), butterflies (Papilio demoleus, Catopsilia pyranthe, and Catopsilia pomona) and unidentified dipteran. Three species, wasp (Vespa affinis), ants (Dolichoderus thoracicus and Oecophylla smaragdina) are categorized as predatory insects that have an important role in biological control.