Flowers of the five Bignoniaceae were visited by several species of bees (Table 3); all bee species were active predominantly between 07:00 and 15:00h.The abundance of some bees was mostly high ...

Floral biology and floral visitors. In Handroanthus serratifolius, the onset of anthesis was irregular in its timing, most often commencing in the morning (at 7:30 in 55%;, at 12:30 in 24%; and at ...