Are Bee trees and Epigaea both hollow?
Bee tree A bee tree is a tree in which a colony of honey bees makes its home. A colony of bees may live in a bee tree for many years. Most bee trees have a large inner hollow, often with an upper and lower entrance.
Scopa (biology) Scopa (plural scopae; Latin for "broom") are any of a number of different modifications on the body of a "non-parasitic" bee that form a pollen-carrying apparatus. In most bees, the scopa is simply a particularly dense mass of elongated, often branched, hairs (or setae) on the hind leg. When present on the hind legs, the modified hairs are, at a minimum, on the tibia, but some bees also have modified hairs on the femur and/or trochanter. A few bees have, in addition to the leg hairs, many modified hairs on the ventral surface of the abdomen which are also used in pollen transport; there is one family of bees, Megachilidae, in which the modified leg hairs are absent, and the scopa is limited to the abdominal hairs (see photo). In the familiar honey bees and bumblebees, the scopa is replaced by the pollen basket (corbicula).