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