Up to a third of the food we eat is derived from plants that are either dependent on orbenefit from insect pollination (Oldroyd & Nanork, 2009), especially by honey bees(Richards, 2001). The European honey bee, Apis mellifera, is the most economically valuablepollinator of agricultural crops worldwide (Conte & Navajas, 2008). However, in most areasof Southeast Asia, there is no significant pollination industry. Insect pollinated crops are,therefore, completely reliant on wild bees, particularly honey bees and stingless bees, fortheir pollination (Rahman & Rahman, 2000).