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.
Wheel bug. Predators are animals that eat other animals, called prey, and are usually fairly active because they have to hunt their prey. Predatory insects eat many pest insects and are an important part of a natural control program for the home garden. The most common insect predators are in the beetle, true bug, lacewing, wasp, and dragonfly families, as well as some flies such as flower fly.