In this article we will discuss about the central, peripheral and sympathetic nervous system of cockroach. Central Nervous System of Cockroach: The central nervous system consists of the supra-oesophageal ganglion or brain, sub- oesophageal ganglion and the nerve cord. The supra-oesophageal ganglion or cerebral ganglion is a bilobed structure situated in the head in front of oesophagus, above the tentorium [...]
The following points highlight the three main species of cockroach. The species are: 1. Periplaneta Australasiae 2. Blatta Orientalis 3. Blatella Germanica. Cockroach: Species # 1. Periplaneta Australasiae: Periplaneta australasiae (Fig. 73.40 B) is commonly known as Australian cockroach. It was originally a native of Africa but, like other cockroaches, it has now spread to the whole of the world. [...]
In this article we will discuss about the reproductive system of cockroach. Male Reproductive Organs of Cockroach: The male reproductive system of cockroach consists of a pair of testes, vasa deferentia, an ejaculatory duct, utricular gland, phallic gland and the external genitalia. (i) Testes: There is a pair of three-lobed testes lying dorsolaterally in the 4th and 5th abdominal segments, [...]