While much information can be gleaned by testing the blood itself (drawn from a vein by phlebotomy), it is sometimes necessary to examine the source of the blood cells in the bone marrow to obtain more information on hematopoiesis; this is the role of bone marrow aspiration and biopsy.
From Wikipedia, the free encyclopedia. The wheel bug (Arilus cristatus), in the family Reduviidae, is one of the largest terrestrial true bugs in North America, being up to 1.5 inches (38 mm) in length. A characteristic structure is the wheel-shaped pronotal armor.
Rolly-Polly bug is another name for the Woodlouse. These little crustations are known by many other names such as cheese log, pill bug, rolly-polly, roll up bug, salter, sow bâ¦ug, and armadillidiidae. They are not insects. Insects have only 6 legs. rolly-polly bugs have 7 pair of legs (14 legs). Making the world better, one answer at a time.