Amegilla bombiformis

A. bombiformis has been recorded visiting Abelia, Buddleja, and blue flax lily (Dianella caerulea) flowers in the garden; males rest overnight attached to plant stems. They are found in eastern Australia, from Queensland through New South Wales and into Victoria,^[4] and as well as New Guinea and the Aru Islands to the north.^[5]

The nest consists of several urn-shaped cells at the end of a 10 cm (4 in) long burrow, located in soil or earth, such as a creek bank in natural areas, or rubble in gardens, with some overhanging shelter. The cells themselves are 2 cm (0.8 in) long and lined with a waterproof material. A. bombiformis adds an egg to each with a food supply of pollen and nectar paste.^[4] Nesting individuals of species are stalked by the domino cuckoo bee (Thyreus lugubris), which hovers silently and observes before entering unattended burrows and laying its own egg, the grub of which consumes the supplies meant for A. bombiformis larvae.

A research study published in 2010 by the Australian Journal of Entomology conducted research on the microbial pathogens that contribute to colony death among A. bombiformis, as well as other Australian bee species.^[6] They concluded that fungal microbial pathogens are a likely contributor to colony deaths among the various species. Through primarily spore germination, fungal pathogens may have been agents of the social evolution among Australian bee species.^[6]