Biologists discover single female Wallace’s giant bee inside a termites’ nest in a tree. As long as an adult thumb, with jaws like a stag beetle and four times larger than a honeybee, Wallace’s giant bee is not exactly inconspicuous. But after going missing, feared extinct, for 38 years, the world’s largest bee has been rediscovered alive and well on the Indonesian … More World’s largest bee, missing for 38 years, found alive in Indonesia.