Definition of litre: A metric unit of capacity, formerly defined as the volume of one kilogram of water under standard conditions, now equal to 1,000 cubic centimetres (about 1.75 pints): 5 cc is about 5 ml. For details see wWkipedia: Litre and Metre. Views.
The thorax is the midsection of the insect body. It holds the head, legs, wings and abdomen. It is also called mesosoma in other arthropods. It is formed by the prothorax, mesothorax and metathorax and comprises the scutellum; the cervix, a membrane that separates the head from the thorax; and the pleuron, a lateral sclerite of the thorax.
Included in this group are the crustaceans (crabs, lobsters, crayfish), the millipedes and centipedes, and the insects. The body of insects. is divided into three regions: a head, a thorax, and a clearly segmented abdomen. The thorax usually has three pairs of legs and two pairs of wings attached to it. Centipedes and millipedes have a head and a narrow, segmented trunk, the former having one pair of legs per segment and the latter having two. Crustaceans have many different body shapes. In most, the head and thorax are fused and separate from the abdomen. Their segmented bodies are often hidden by their hard outer shell.