Question

Describe the abdomen of female cockroach. Differentiate between male and female cockroach.

Answer 1

• MALE COCKROACH	FEMALE COCKROACH
  1. The Anal style is present.	1. The Anal style is absent.
  2. Ventrally, 9 sterna are visible.	2. Ventrally, only 7 sterna are visible.
  3. They have a narrow abdomen.	3. They have a broad abdomen.
  4. Only 8th tergum of male cockroach is large.	4. 8th and 9th tergum of female cockroach are largely covered by 7th tergum.

• The abdomen in females consists of 10 segments. The 7th sternum is boat-shaped and together with the 8th and 9th sterna forms a brood or genital pouch whose anterior part contains female gonopore, spermathecal pores and collateral glands.